| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 334 | Tuners | 52 |
| 334001000 | COMBINED DIVERSE-TYPE TUNERS | 2 |
| 20080284546 | BROADCAST SIGNAL RECEIVING APPARATUS - A broadcast signal receiving apparatus includes: a connecting unit through which a broadcast signal is input/output; a first tuner that is provided to be integrated with the connecting unit and tunes the broadcast signal input through the connecting unit; and a second tuner that is connected to the connecting unit via a cable and tunes the broadcast signal input through the connecting unit. | 11-20-2008 |
| 20080290970 | DEVICE FOR MONITORING MULTIPLE BROADCAST SIGNALS - A media content monitoring system uses a rack adapted to receive multiple carrier boards to improve the system's ability to be configured to specific applications. Each carrier board contains tuner modules for receiving AM/FM broadcasts, satellite radio broadcasts, TV audio broadcasts, HD, IBOC, DAB and DRM digital radio broadcasts, etc. The tuner modules produce a USB output that is combined by a USB hub on the carrier boards into a single USB output. The carrier board outputs are in turn combined by a rack based USB hub into single USB output that is provided to a host computer. The host computer includes content identification software that automatically identifies selected media content received by the tuner modules and stores the selected content in a database. The host computer can send control codes to the tuner modules to alter their reception parameters. | 11-27-2008 |
| 334005000 | CONDITION-RESPONSIVE (E.G., TEMPERATURE COMPENSATION) | 1 |
| 334006000 | With condition-responsive inductor or capacitor | 1 |
| 20080266034 | LOW-NOISE FINE-FREQUENCY TUNING - Circuits, methods, apparatus, and code that provide low-noise and high-resolution electronic circuit tuning. An exemplary embodiment of the present invention adjusts a capacitance value by pulse-width modulating a control voltage for a switch in series with a capacitor. The pulse-width-modulated control signal can be adjusted using entry values found in a lookup table, by using analog or digital control signals, or by using other appropriate methods. The capacitance value tunes a frequency response or characteristic of an electronic circuit. The response can be made to be insensitive to conditions such as temperature, power supply voltage, or processing. | 10-30-2008 |
| 334008000 | REMOTELY CONTROLLED TUNER | 3 |
| 20090058572 | SIGNAL RECEIVING APPARATUS AND CONTROL METHOD THEREOF - A signal receiving apparatus includes: a tuning unit which has at least one tuner; a communication unit which communicates at least one external device; and a controller which divides an entire channel frequency band to be assigned to the tuning unit and a tunable device, and controls the tuning unit and the communication unit to tune the assigned channel frequency bands if the tunable device is present among the external devices. | 03-05-2009 |
| 20120274427 | AUTO-TUNING SYSTEM FOR AN ON-CHIP RF FILTER - A Radio Frequency Receiver on a Single Integrated Circuit (“RFSIC”) is described. The RFSIC may include a mixer, a phase-locked loop (“PLL”) in signal communication with the mixer, and an on-chip auto-tuned RF filter in signal communication with both the mixer and PPL, such that the same PLL simultaneously tunes the frequency of the VCO and the frequency response of the auto-tuned RF filter. | 11-01-2012 |
| 20130002379 | HARMONIC IMPEDANCE TUNER WITH FOUR WIDEBAND PROBES AND METHOD - A method for calibrating multi carriage-multi probe impedance tuners for synthesizing distinct, user defined impedances at a number of harmonic frequencies, employs two-port s-parameter characterization of the tuning sections on a pre-calibrated vector network analyzer at a pre-selected number of probe positions. All tuner probes are wideband and capable of creating high reflection factor at all harmonic frequencies considered. The data are saved in memory and all permutations of the s-parameters at all harmonic frequencies are generated. Subsequently the data are organized blocks based on reflection factor values fitting in a number of segments of the Smith chart; this allows accelerated numeric search through a pre-selection of data block depending on the target reflection factor chosen. The method can be used for two three and four probe tuners. | 01-03-2013 |
| 334011000 | TUNER UNIT DIRECTLY RESPONSIVE TO VOLTAGE AND/OR CURRENT VARIATION | 6 |
| 20090027145 | RECEIVER COMPRISING TWO TUNNERS - A receiver comprises two tuners and a DC-to-DC converter (DCC) for generating an increased supply voltage (VH) on the basis of a main supply voltage. Each tuner comprises a tunable circuit (TUC | 01-29-2009 |
| 334014000 | Reactance tuning | 5 |
| 20090206963 | TUNABLE METAMATERIALS USING MICROELECTROMECHANICAL STRUCTURES - A metamaterial comprises a support medium, such as a planar dielectric substrate and a plurality of resonant circuits supported thereby. At least one resonant circuit is a tunable resonant circuit including a conducting pattern and a voltage-tunable capacitor, so that an electromagnetic parameter (such as resonance frequency) may be adjusted using an electrical control signal. In some examples of the present invention, the voltage-tunable capacitor includes a MEMS structure. | 08-20-2009 |
| 20100321137 | PROGRAMMABLE VARACTOR AND METHODS OF OPERATION THEREOF - Exemplary embodiments are directed to a programmable varactor device. A varactor device may include an input device configured to receive a tuning voltage and generate a bias voltage at least partially dependent on the tuning voltage. The varactor device may also include a varactor pair coupled to the input device and having a first variable capacitor and a second variable capacitor, wherein each of the first variable capacitor and a second variable capacitor are configured for operable coupling to each of the bias voltage and the tuning voltage. | 12-23-2010 |
| 334015000 | Semiconductor reactance circuit | 3 |
| 20080197947 | Method to Increase the Tuneability of Varactors - The present invention relates to a tunable circuit, or admittance, arrangement comprising at least one capacitive branch with at least a tunable first capacitor, and tuning application means. It further comprises at least one resonant branch comprising at least a second capacitor and an inductor, said second capacitor and said inductor being connected in series. Said at least one capacitive branch and said at least one resonant branch are connected in parallel, and said tuning application means are adapted for application of a DC tuning voltage. The capacitance of said first and/or second capacitor and/or the inductance of said inductor are selected such that the frequency dependency of the tunability of a varactor arrangement forming the equivalent varactor arrangement of the admittance arrangement can be controlled at least in a selected frequency range. | 08-21-2008 |
| 20090153275 | TUNABLE MAGNETIC FIELD AMPLIFYING DEVICE - Provided is a tunable magnetic field amplifying device capable of easily adjusting resonance frequencies and tuning usable bands by using discrete elements to vary electric properties of elements that are used for amplifying a magnetic field of a specific microwave band. The tunable magnetic field amplifying device includes a Swiss roll formed by winding a metal sheet coated with a dielectric in a spiral cylinder shape once or several times; and a tunable capacitor connected between an inner sheet of and an outer sheet of the metal sheet for tuning a resonance frequency. | 06-18-2009 |
| 20090195336 | TUNABLE VOLTAGE-CONTROLLED OSCILLATOR - A multi-band VOC includes a plurality of oscillators, each oscillators having an oscillatory range respectively; a plurality of capacitor tanks is provided in each oscillators, and each capacitors is composed of a plurality of capacitors in series connection; a voltage detecting device is provided to detect a voltage signal, and to select an oscillator; one end of a logic controller is provided to electrically connect to the voltage detecting device, and another end is provided to electrically connect to the capacitor tank, which is provided a control signal to drive capacitance of the capacitor tank; and a multiple device is provided to output an oscillation frequency. | 08-06-2009 |
| 334017000 | TUNER UNIT WITH ELECTROMAGNETIC OPERATOR | 2 |
| 20110163830 | FLOW LINE ELECTRIC IMPEDANCE GENERATION - A flowline electrical impedance generation apparatus for generating a local electrical impedance in a metallic tubing portion of a flowline may be used in place of insulation joints in various systems. The impedance generation apparatus is tuned or tuneable to achieve maximum impedance at chosen frequencies, i.e., frequencies which it is desired to block. | 07-07-2011 |
| 20150349751 | IMPEDANCE TUNERS WITH POSITION FEEDBACK - An impedance tuner includes a controller, an RF transmission line, and a movable capacitive object configured for movement commanded by the controller relative to the transmission line to alter impedance. A position sensor is configured to provide feedback position data to the controller indicative of the actual position of the capacitive object after it is moved. The controller is configured to utilize the feedback position data in a closed loop to position the capacitive object at a desired position within a tolerance. | 12-03-2015 |
| 334030000 | WITH RESONANCE INDICATOR | 1 |
| 20150365073 | APPARATUS, METHOD AND A COMPUTER PROGRAM FOR RESONANCE TUNING - There are disclosed various methods, apparatuses and computer program products for resonance tuning. In some embodiments an oscillator signal derived from a local oscillator ( | 12-17-2015 |
| 334039000 | COMBINED | 3 |
| 20110254644 | Reducing Power Dissipation Using Process Corner Information - In one embodiment, the present invention includes a method for determining process corner information of an integrated circuit (IC) and controlling at least one analog current for at least one analog circuit of the IC based on the process corner information. More specifically, if the process corner information is indicative of a fast corner IC, the analog current may be scaled down. At the same time that the analog current is scaled down, a current consumption level of digital circuitry of the IC may increase. In this way, overall power consumption of the IC may be reduced to the extent that the analog current(s) are scaled. | 10-20-2011 |
| 20120299672 | MULTIPLEXED RFAGC FOR FREQUENCY DIVERSITY RECEIVERS - The present invention concerns a system for controlling gain when time-sharing a tuner in a frequency diversity receiver. Two radio-frequency automatic gain control (RFAGC) filter capacitors are used, each capacitor corresponding to one of the currently utilized frequencies in the frequency diversity scheme. The capacitors are switched in tandem with the tuner frequency selection. This allows the capacitor associated with a tuned frequency to retain the RFAGC voltage until the tuner returns to that frequency. | 11-29-2012 |
| 20140077904 | APPARATUS AND METHOD FOR TUNING THE FREQUENCY OF A BANDPASS FILTER TO AN OFFSET FREQUENCY AROUND A CARRIER FREQUENCY - A novel frequency locked loop for tuning a bandpass filter to a small offset frequency around an RF center frequency is provided. The difference between the bandpass filter frequency and the RF center frequency is generated, a frequency locked loop is used to tune the frequency difference to a reference offset frequency. | 03-20-2014 |
| 334040000 | SENSITIVITY OR "Q" ADJUSTMENT MEANS IN TUNED CIRCUITRY | 1 |
| 20090167466 | TUNABLE HIGH QUALITY FACTOR INDUCTOR - An inductor circuit with high quality (Q) factor includes a primary inductor and a compensation sub-circuit. The compensation sub-circuit is electrically isolated from the primary inductor. The compensation sub-circuit is magnetically coupled with the primary inductor to compensate the loss in the primary inductor. | 07-02-2009 |
| 20090167466 | TUNABLE HIGH QUALITY FACTOR INDUCTOR - An inductor circuit with high quality (Q) factor includes a primary inductor and a compensation sub-circuit. The compensation sub-circuit is electrically isolated from the primary inductor. The compensation sub-circuit is magnetically coupled with the primary inductor to compensate the loss in the primary inductor. | 07-02-2009 |
| 334041000 | WITH RESONANT LINE ELEMENTS | 2 |
| 20090085698 | METHOD AND SYSTEM FOR LOGEN BASED ON HARMONICS USING MICROSTRIP TECHNIQUES - Aspects of a method and system for LOGEN based on harmonics using microstrip techniques may include generating an output local oscillator signal from a non-sinusoidal input local oscillator signal by filtering the non-sinusoidal input local oscillator signal via a microstrip filter, wherein the output local oscillator signal may comprise a fundamental frequency that may be given by a harmonic frequency of the non-sinusoidal input local oscillator signal. The microstrip filter may be a programmable bandpass filter or a programmable stopband filter. The microstrip filter may be tuned to the harmonic frequency. The microstrip filter may be configured by adjusting a center frequency via a capacitance and/or an inductance. The bandwidth of the microstrip filter may be configured. The microstrip filter may be a programmable coplanar waveguide filter, and its center frequency may be configured via an inductance and/or a capacitance. | 04-02-2009 |
| 334045000 | With lumped capacitor in tuned circuit | 1 |
| 20090066448 | TUNER AND TRANSFORMER FORMED BY PRINTED CIRCUIT BOARD THEREOF - A tuner and a transformer formed by printed circuit board thereof are provided. The transformer includes a first winding and a second winding. In which, the first winding forms a first inductor and the second winding forms a second inductor. The transformer is formed by the first and the second inductors, wherein the first winding and the second winding are formed by conducting wires of a printed circuit board. | 03-12-2009 |
| 334047000 | WITH SWITCHING MEANS | 14 |
| 20140055218 | TUNABLE WIDEBAND DISTRIBUTION CIRCUIT - A tunable wideband distribution circuit for transmitting a wireless signal over a transmission line is disclosed. The tunable wideband distribution circuit may include a programmable gain buffer, wherein the gain of the programmable gain buffer is based at least in part on a frequency of the wireless signal. The tunable wideband distribution circuit may also include a tuning element configured to modify an effective impedance of the transmission line based at least on the frequency of the wireless signal, wherein the tuning element is electrically coupled to the transmission line. | 02-27-2014 |
| 334055000 | Capacitor only modified or substituted by switching | 11 |
| 20090021332 | ARRAY OF CAPACITORS SWITCHED BY MOS TRANSISTORS - An integrated variable capacitance with low losses comprises an array ( | 01-22-2009 |
| 20100039194 | Monotonic frequency tuning technique for DCXO in cellular applications - A frequency tuning device for use in a crystal oscillator circuit includes a first fine tuning array of capacitors, a second fine tuning array of capacitors and a coarse tuning array of capacitors coupled in parallel to produce a tuning capacitance for tuning the crystal oscillator. The first fine tuning array of capacitors includes a binary weighted switched capacitor network, the second fine tuning array of capacitors includes a thermometer coded switched capacitor network and the coarse tuning array of capacitors includes a binary weighted switched capacitor network with a different unit capacitance value than the first and second fine tuning arrays. | 02-18-2010 |
| 20100085134 | MICROWAVE LENS - A microwave lens having an array of electronic inductive capacitive cells wherein each cell includes an electrically conductive pattern which responds to incident microwave electromagnetic energy as an LC resonator. At least one of the cells includes at least one MEMS device which is movable in response to an electrical bias to thereby vary the resonant frequency of that cell. In order to bias the MEMS device, an electrical insulating layer extends along a portion of the pattern of the cell and to both sides of the MEMS device. An electrically conductive strip then extends over the insulating layer so that the conductive strip is electrically insulated from the pattern while electrically connected to the MEMS device. | 04-08-2010 |
| 20100156574 | INFORMATION PROCESSING APPARATUS AND METHOD OF MANUFACTURING THE SAME - An information processing apparatus having a non-contact IC portion which performs radio communication with a reader/writer is provided. The non-contact IC portion includes: capacitors connected so that capacitance can be changed between multiple stages; a coil connected to the capacitors; and a switching portion which turns on/off connection of the capacitors so that a resonance frequency expressed based on capacitance of the capacitors and inductance of the coil is set within a given effective resonance frequency range. | 06-24-2010 |
| 20110025436 | System and Method for Reduced Area Tunable Capacitors - Embodiments of a capacitive tuning system implementing a tunable capacitive array are presented herein. The tunable capacitive array includes both scaled coarse capacitors and one or more fine capacitors. The one or more fine capacitors advantageously reduce a differential nonlinearity associated with the scaled coarse capacitors. The use of fine capacitors limits additional area requirements in an integrated circuit implementation, while improving the accuracy of the capacitive tuning system. | 02-03-2011 |
| 20110316654 | SYSTEM AND METHOD FOR TUNING-CAPACITOR-ARRAY SHARING - A system and method for sharing a switched capacitor array (SCA) by two tuning circuits are disclosed. In a multiple-band radio receiver, there is a need to use multiple tuning circuits for signals in different bands. The tuning circuit typically comprised an adjustable capacitance device and other tuning components, where the adjustable capacitance device is often implemented in SCA. The present invention discloses a system and method comprising n sections of capacitor elements where each capacitor element comprises a capacitor and switches to selectively connect the capacitor to one of the tuning circuit. Consequently, the SCA can be shared by the two tuning circuits. The control bits for the switched may be provided from a programmable control register. | 12-29-2011 |
| 20140184363 | Electronic Device with Switched-Capacitor Tuning and Related Method - An electronic device includes an inductive element, and variable capacitors. Each variable capacitor includes: first and third capacitors, both having a first terminal electrically connected to a first terminal of the inductive element; and second and fourth capacitors, both having a first terminal electrically connected to a second terminal of the inductive element. A first switch circuit electrically connects or isolates a second terminal of the first capacitor to/from a second terminal of the second capacitor. A second switch circuit electrically connects or isolates a second terminal of the third capacitor to/from a second terminal of the fourth capacitor. A third switch circuit electrically connects or isolates the second terminal of the first capacitor to/from the second terminal of the fourth capacitor. A fourth switch circuit electrically connects or isolates the second terminal of the third capacitor to/from the second terminal of the second capacitor. | 07-03-2014 |
| 20140340181 | System and Method for a Switchable Capacitance - In accordance with an embodiment, a switchable capacitance circuit includes a plurality of capacitance-switch cells that each has a first semiconductor switching circuit and a capacitance circuit having a first terminal coupled to the first semiconductor switching circuit. A resistance of the first semiconductor switching circuit of a first switch-capacitance cell of the plurality of capacitance-switch cells is within a first tolerance of a resistance of the first semiconductor switching circuit of a second capacitance-switch cell of the plurality of capacitance-switch cells, and a capacitance of the capacitance circuit of the first capacitance-switch cell is within a second tolerance of a capacitance of the capacitance circuit of the second capacitance-switch cell. | 11-20-2014 |
| 20150015346 | Electronic Device with Switched-Capacitor Tuning and Related Method - A device comprises a first variable capacitance block comprising four first capacitors, a second variable capacitance block comprising four second capacitors, wherein the second capacitors are arranged in a same configuration as the first capacitors, a third variable capacitance block comprising four third capacitors, a fourth variable capacitance block comprising four fourth capacitors, and wherein the fourth capacitors are arranged in a same configuration as the third capacitors, a first switch coupled between the first variable capacitance block and the second variable capacitance block, a second switch coupled between the third variable capacitance block and the fourth variable capacitance block, a third switch coupled between the first variable capacitance block and the fourth variable capacitance block and a fourth switch coupled between the third variable capacitance block and the second variable capacitance block. | 01-15-2015 |
| 20150311883 | System and Method for a Switchable Capacitance - In accordance with an embodiment, a switchable capacitance circuit includes a plurality of capacitance-switch cells that each have a capacitance circuit having a capacitance between a first terminal and a second terminal of the capacitance circuit, and a semiconductor switching circuit including a first terminal coupled to the first terminal of the capacitance circuit, a plurality of series connected radio-frequency (RF) switch cells having a load path and a common node. Each of the plurality of series connected RF switch cells has a switch transistor and a gate resistor having a first end coupled to a gate of the switch transistor and a second end coupled to the common node. The switchable capacitance circuit also includes a resistance circuit having a first end coupled to the common node and a second end coupled to a control node. | 10-29-2015 |
| 20160126934 | SWITCHABLE CAPACITOR ARRAY AND METHOD FOR DRIVING A SWITCHABLE CAPACITOR ARRAY - An improved switchable capacitor array comprises a plurality of n≧2 capacitor units, each comprising a capacitor with a capacitance and a switch unit. The capacitor units are electrically connected in series. Equidistantly spaced impedance values can be obtained if the values of the capacitances are chosen properly. | 05-05-2016 |
| 334056000 | Inductor only modified or substituted by switching | 1 |
| 20100097164 | TUNED CIRCUIT AND DOUBLE TUNED CIRCUIT - A double tuned circuit includes: a primary tuning circuit connected to an input terminal; and a secondary tuning circuit connected to an output terminal. The primary tuning circuit has a primary capacitor connected between the input terminal and a ground and a primary inductor connected between the input terminal and the ground and formed of a first coupling line having a spiral shape. The secondary tuning circuit has a secondary capacitor connected between the output terminal and the ground and a secondary inductor connected between the output terminal and the ground and formed of a second coupling line having the same spiral shape as the first coupling line, arranged alternately with the first coupling line, and having an M-coupling with the first coupling line. A length of the first coupling line in the range from a connection point between the first coupling line and the input terminal to a ground point and a length of the second coupling line in the range from a connection point between the second coupling line and the output terminal to the ground point can be changed by a tuning frequency, and the lengths of those are substantially equal to each other. | 04-22-2010 |
| 334059000 | Tuned transformer circuit substituted by switching | 1 |
| 20090243767 | METHOD AND SYSTEM FOR CONFIGURING A TRANSFORMER EMBEDDED IN A MULTI-LAYER INTEGRATED CIRCUIT (IC) PACKAGE - Aspects of a method and system for configuring a transformer embedded in a multi-layer integrated circuit package are provided. In this regard, a windings ratio of a transformer embedded in a multi-layer IC package bonded to an IC may be configured, via logic, circuitry, and/or code in the IC, based on signal levels at one or more terminals of the transformer. The transformer may comprise a plurality of inductive loops fabricated in transmission line media. The integrated circuit may be flip-chip bonded to the multi-layer package. The IC may comprise a signal strength indicator enabled to measure signal levels input to or output by the transformer. The windings ratio may be configured via one or more switches in the IC and/or in the multi-layer package. The IC and/or the multi-layer package may comprise ferromagnetic material which may improve magnetic coupling of the transformer. | 10-01-2009 |
| 334061000 | MUTUAL INDUCTANCE VARIABLE MEANS | 1 |
| 20090184786 | MULTI-SEGMENT PRIMARY AND MULTI-TURN SECONDARY TRANSFORMER FOR POWER AMPLIFIER SYSTEMS - Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments. | 07-23-2009 |
| 334065000 | INDUCTOR AND CAPACITOR BOTH VARIABLE | 1 |
| 334066000 | With variable inductor and capacitor structure in common | 1 |
| 20090096557 | Variable Inductance Applying Device Using Variable Capacitor and Variable Frequency Generating Device Thereof - Disclosed is a variable inductance applying device using a variable capacitor, and a variable frequency generating device thereof. The variable inductance applying device includes: a first inductor whose both terminals are connected to an inductance applying terminal applying inductance to an external circuit; a second inductor inductively coupled to the first inductor; and a variable capacitor connected to both terminals of the second inductor, which varies inductance from the inductance applying terminal by changing capacitance. Therefore, the inductance to be applied to the external circuit can be varied by changing the capacitance of the variable capacitor. Since the variable capacitor rarely contains a resistance component, energy loss due to the resistance component hardly occurs. As a result, the variable inductance applying device has a high value of Q. | 04-16-2009 |
| 334078000 | VARIABLE CAPACITOR TUNED | 10 |
| 20090079524 | MULTI-BAND TUNABLE RESONANT CIRCUIT - A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC includes a tunable resonant circuit that includes a transmission line having an inductance, a plurality of switchable capacitors configured to be switched into and out of the tunable resonant circuit in response to a first control signal, and at least one variable capacitor that can be varied in response to a second control signal, wherein a center resonant frequency of the resonant circuit is electronically tunable responsive to the first and second control signals that control a first capacitance value of the plurality of switchable capacitors and a second capacitance value of the at least one variable capacitor. | 03-26-2009 |
| 20090108966 | LINE STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - A line structure is provided which includes a ferroelectric film which is formed on at least one surface of both sides of a substrate and a permittivity of which changes according to a magnitude of an applied voltage, an inductor which is formed on a first side of the substrate, and a capacitor which has a capacitance corresponding to the permittivity of the ferroelectric film and the substrate. | 04-30-2009 |
| 20090134960 | Linear variable voltage diode capacitor and adaptive matching networks - An integrated variable voltage diode capacitor topology applied to a circuit providing a variable voltage load for controlling variable capacitance. The topology includes a first pair of anti-series varactor diodes, wherein the diode power-law exponent n for the first pair of anti-series varactor diodes in the circuit is equal or greater than 0.5, and the first pair of anti-series varactor diodes have an unequal size ratio that is set to control third-order distortion. The topology also includes a center tap between the first pair anti-series varactor diodes for application of the variable voltage load. In preferred embodiments, a second pair of anti-series varactor diodes is arranged anti-parallel to the first pair of anti-series varactor diodes so the combination of the first pair of anti-series varactor diodes and the second pair of anti-series varactor diodes control second-order distortion as well. | 05-28-2009 |
| 20090167467 | DOUBLE-TUNING CIRCUIT OF TELEVISION TUNER - In a double-tuning circuit including a primary tuning circuit having a first inductor and a first variable capacitive element connected in parallel and a secondary tuning circuit having a second inductor and a second variable capacitive element connected in parallel, a fixed part of a copper-foil pattern is connected to a connection point at which the double-tuning circuit is connected to an input terminal of a frequency mixing circuit, and a tip part of the copper-foil pattern extends to near the first inductor, whereby a trap circuit for attenuating an image frequency component is formed. A pattern is formed between a ground-side terminal of the first inductor and the ground, and a capacitor is connected between a connection point at which the first inductor is connected to one terminal of the pattern and a ground-side terminal of the second variable capacitive element. | 07-02-2009 |
| 20100001818 | MEMORY CELL BASED ARRAY OF TUNING CIRCUIT - A method applied in a tuning circuit comprising a plurality of turning cells is disclosed. the method comprises: laying out a array of tuning cells in a matrix configuration, the matrix comprising a first dimension and a second dimension; assigning a first index associated with the first dimension and a second index associated with the second dimension to each tuning cell; controlling each tuning cell using a word line and a bit line; and summing up outputs from all tuning cells to form a combined output. The tuning cell provides a first circuit value or a second circuit value according to the logical value of the bit line, and the difference between the first circuit value and the second circuit value is determined such that a turning resolution of the tuning circuit is determined. | 01-07-2010 |
| 20100134219 | TUNER CIRCUIT WITH LOOP THROUGH FUNCTION - The tuner circuit comprises a HF input and a HF output with a loop through function, wherein a variable capacitance diode is coupled with a first terminal to the HF input and with a second terminal to the HF output for providing a passive loop through function. The variable capacitance diode is in particular in a passing mode, when no DC reverse voltage is applied, for providing a passive loop through function. In a preferred embodiment, the tuner circuit is designed for reception of television channels, and for the variable capacitance diode one or two tuning variable capacitance diode is used being designed for satellite tuners with a frequency range of 1-2 GHz, or a specially designed variable capacitance diode with a capacitance ratio C | 06-03-2010 |
| 20100156575 | Receiver with tuner front end using tracking filters and calibration - A broadband tuner includes a tracking filter with calibration to compensate for component errors and drift. The filters use off-die inductors that are preferably within a system-in-package (SIP) with other critical tuner components, which produces a highly integrated tuner front end with high Q filters within a single package. High voltage varactors with a large tuning range can be used for variable capacitors. The integration of the tuner into a SIP allows the tuner design to be optimized for cost and performance while keeping the critical RF layout requirements within the tuner. A configurable tuner front end enables modes for low noise, high linearity, good input return loss (S | 06-24-2010 |
| 20110050372 | Integrated Channel Filter Using Multiple Resonant Filters and Method of Operation - A circuit includes a first filter comprising a first inductor coupled to a first variable capacitor, wherein the first filter is associated with a first resonant frequency. The circuit further comprises an amplifier coupled to the first filter and a second filter coupled to the amplifier. The second filter comprises a second inductor coupled to a second variable capacitor, wherein the second filter is associated with a second resonant frequency that is substantially the same as the first resonant frequency. At least a portion of the first filter and at least a portion of the second filter are formed on an integrated circuit. | 03-03-2011 |
| 20120249270 | Providing Multiple Inductors For A Radio Tuner - A method includes receiving a desired channel indication in a radio tuner, determining a band of operation in which the channel is located, and if the channel is within a first band coupling multiple inductors into a resonant tank, and if the desired channel is within a second band coupling a single inductor into the resonant tank. | 10-04-2012 |
| 20140306784 | ANTENNA TUNING APPARATUS FOR A MULTIPORT ANTENNA ARRAY - An antenna tuning apparatus for a multiport antenna array used for sending and/or receiving electromagnetic waves for radio communication comprises: 4 antenna ports, 4 user ports, 10 adjustable impedance devices each presenting a negative reactance and having a terminal coupled to one of the antenna ports, 4 windings each having a first terminal coupled to one of the antenna ports and a second terminal coupled to one of the user ports, and 10 adjustable impedance devices each presenting a negative reactance and having a terminal coupled to one of the user ports. All adjustable impedance devices are adjustable by electrical means. Any small variation in the impedance matrix of the antenna array, caused by a change in operating frequency or a change in the medium surrounding the antennas, can be compensated with a new adjustment of the adjustable impedance devices. | 10-16-2014 |
| 334085000 | WITH SHIELDING OR HOUSING MEANS | 3 |
| 20100315183 | MOUNTING STRUCTURE OF ELECTRONIC CIRCUIT UNIT - A mounting structure of an electronic circuit unit includes a circuit board provided with a high frequency circuit, a metallic casing mounted on the circuit board to cover the high frequency circuit, an F type connector fixed to the casing and protruding approximately perpendicularly to the circuit board, and a flexible cable having one end portion connected to the circuit board. In a state in which the F type connector passes through a mounting hole formed through a set-side panel to protrude outward, at least one of the casing and the F type connector is fixed to the set-side panel by a fixing member, and the other end portion of the flexible cable is connected to a mother board. | 12-16-2010 |
| 20110241808 | Tuner Module - According to one embodiment, a tuner module, including: a substantially box-shaped casing; an input terminal attached to one side plate of the casing; a distributor disposed in the casing around the input terminal; a first tuner disposed adjoining the distributor so as to sandwich the distributor with the input terminal; a second tuner disposed adjoining the first tuner so as to sandwich the first tuner with the distributor; and a circuit board on which the distributor, the first tuner and the second tuner are mounted. | 10-06-2011 |
| 20120194305 | TUNER MODULE - A tuner module is characterized by: a chassis formed with lateral surfaces wrapping four corners to open both sides; an upper cover covering one opened side of the chassis to be provided with an elastic fixation end that is fixed at the lateral surface; and a lower cover applying pressure to an external surface of the elastic fixation end to cover the other opened side of the chassis whereby another elastic hitching end that is fixed at the lateral surface is provided. | 08-02-2012 |
| 334088000 | WITH STOP OR POSITIONING MEANS (E.G., DETENTS) | 1 |
| 20110181378 | Stopper structure for rotary operation member, electronic device, and channel stopper - A stopper structure includes a wall defining an opening. A rotary electronic component has a rotational shaft extending through the opening. A channel stopper has a tubular body and an engagement projection. The tubular body is detachably mounted on the rotational shaft and is inhibited from rotating relative thereto. The engagement projection extends from an end of the tubular body in an axial direction and a radial direction with respect to the rotational shaft. A rotary operation member is detachably mounted on the rotational shaft and the tubular body and is inhibited from rotating relative thereto. The rotary operation member has an axial hole in which at least portions of the rotational shaft and the tubular body fit. A limiting portion provided on the wall is engageable with the engagement projection for liming a range of rotation of the rotational shaft. | 07-28-2011 |
| 334040000 | SENSITIVITY OR "Q" ADJUSTMENT MEANS IN TUNED CIRCUITRY | 1 |
| 20090167466 | TUNABLE HIGH QUALITY FACTOR INDUCTOR - An inductor circuit with high quality (Q) factor includes a primary inductor and a compensation sub-circuit. The compensation sub-circuit is electrically isolated from the primary inductor. The compensation sub-circuit is magnetically coupled with the primary inductor to compensate the loss in the primary inductor. | 07-02-2009 |
| 20090167466 | TUNABLE HIGH QUALITY FACTOR INDUCTOR - An inductor circuit with high quality (Q) factor includes a primary inductor and a compensation sub-circuit. The compensation sub-circuit is electrically isolated from the primary inductor. The compensation sub-circuit is magnetically coupled with the primary inductor to compensate the loss in the primary inductor. | 07-02-2009 |
