Patent application number | Description | Published |
20080197929 | Resonant Types Of Common-Source/Common-Emitter Struture For High Gain Amplification - Radio frequency/millimeter wave integrated circuits (RF/MMICs) that employ a resonance mechanism between an input stage and a transistor are disclosed. The circuits contain an input stage, a transistor; and a transformer connected between either a gate or a base of the transistor and a voltage supply of the input stage. The methods disclosed maximize either a collector current or a drain current of a transistor by placing a transformer between the transistor and a voltage source. | 08-21-2008 |
20080204170 | Tunable Artificial Dielectrics - Tuning devices and methods are disclosed. One of the devices comprises a metal structure connected with artificial dielectric elements, and variable capacitance devices. Each variable capacitance device is connected with a respective artificial dielectric element and with a control signal. Control of the variation of the capacitance allows the desired tuning. Another device comprises metallic structures connected with artificial dielectric elements and switches connected between the artificial dielectric elements. Turning ON and OFF the switches allows the capacitance between artificial dielectric elements to be varied and a signal guided by the metallic structures to be tuned. | 08-28-2008 |
20080231383 | Origami Cascaded Topology For Analog and Mixed-Signal Applications - The present disclosure relates to coupled circuits and methods of coupling circuits having a power supply wherein a plurality of transistors are inductively coupled directly to the power supply for providing a single DC supply voltage directly to each of the plurality of transistors, and wherein a plurality of transformers have primary and secondary windings, the primary and secondary windings providing, at least in part, inductive loads for inductively coupling the plurality of transistors to the power supply, the plurality of transformers also providing an AC signal path for coupling neighboring ones of the plurality of transistors together. | 09-25-2008 |
20080272875 | "Interleaved Three-Dimensional On-Chip Differential Inductors and Transformers - Interleaved three-dimensional (3D) on-chip differential inductors | 11-06-2008 |
20080298242 | SYSTEMS AND METHODS FOR TRANSMISSION AND RECEPTION OF DATA INCLUDING PROCESSING AND BUFFERING FEATURES - The present invention relates to a wireless data system which has a transmitter including a transmission buffer. The transmitter is configured to transmit a plurality of packets of encoded data, wherein a level of the transmission buffer is encoded in one of the packets of encoded data. The system further has a wireless receiver for receiving the plurality of packets. The receiver has at least one receiving component that receives the plurality of packets to generate a plurality of decoded signals, wherein the at least one receiving component is configured to receive one of the packets of encoded data from the transmitter to determine the level of transmission buffer. The receiving component is further configured to store the plurality of packets received in a receive buffer, to determine the level of the receive buffer, and to calculate an aggregate buffer level from the transmission buffer and the receive buffer. The receiver controls a packet output rate from the receive buffer to maintain the aggregate buffer level at a desired level. | 12-04-2008 |
20080298338 | METHOD FOR EFFICIENT TRANSMISSION AND RECEPTION OF AUDIO DIGITAL SIGNALS - The present invention relates to a method of wirelessly transmitting and receiving audio digital signals of the type having a first plurality of blocks with each block having a second plurality of frames, with each frame having a third plurality of subframes, with each subframe having a preamble and a binary data. The method efficiently transmits and recomposes the digital audio signals by searching for the preamble associated with a subframe, which is the first subframe of a frame, with the frame being the first frame of a block, and then transmitting wirelessly only the binary data of each subframe, in each frame, in each block thereafter. In a preferred embodiment, the protocol for the transmission of data calls for each data packet that is transmitted to consist of 512 bytes. The data packet transmitted by the transmitter must be acknowledged by the transmission of an acknowledgement (ACK) packet from the receiver. In the event, the data packet is not received and/or the ACK packet is not received, and transmission must recommence, synchronization is accomplished by the retransmission of data packet immediately after the preamble of the first subframe of the first frame of a block. | 12-04-2008 |
20080298442 | SYSTEMS AND METHODS FOR TRANSMISSION AND RECEPTION OF DATA INCLUDING FREQUENCY AND CHANNEL CODE SELECTION - Systems and methods are disclosed for wireless transmission and reception of data including processing and buffering features. According to one or more exemplary aspects, there is provided a wireless audio receiver for receiving a plurality of packets of encoded audio data. Moreover, the receiver includes at least one receiving component that receives the plurality of packets to generate a plurality of decoded signals, a decoding component that decodes the first packet of encoded data transmitted to produce decoded data, and a selecting component that identifies the mechanisms for receiving additional encoded data. Other exemplary embodiments may include one or more receiving components that processing data regarding antenna, frequencies and channels selected for transmission, as well as an audio component that receives the decoded signals and produces decoded audio signals. | 12-04-2008 |
20090302830 | INTEGRATED POWER DETECTOR WITH TEMPERATURE COMPENSATION FOR FULLY-CLOSED LOOP CONTROL - An amplifier circuit comprises a detection power input circuit for receiving an RF signal, and a bias circuit that includes an output for generating a bias signal in response to a reference control voltage. The power detector further comprises a detection circuit for generating a power control voltage having a voltage characteristic that offsets temperature characteristics of the received RF signal. The amplifier circuit further comprises a power amplifier coupled to the bias circuit. The power amplifier includes a driver stage providing the RF signal. The detection circuit compensates temperature variation of the inputted detection voltage of the received RF signal. | 12-10-2009 |
20100109724 | SUBMILLIMETER-WAVE SIGNAL GENERATION BY LINEAR SUPERIMPOSITION OF PHASE-SHIFTED FUNDAMENTAL TONE SIGNALS - Generation of Terahertz range (300 GHz to 3 THz) frequencies is increasingly important for communication, imaging and spectroscopic systems, including concealed object detection. Apparatus and methods describe generating multiple phase signals which are phase-locked at a fundamental frequency, which are then interleaved into an output which is a multiple of the fundamental frequency. By way of example phase generators comprise cross-coupling transistors (e.g., NMOS) and twist coupling transistors (NMOS) for generating a desired number of phase-locked output phases. A rectifying interleaver comprising a transconductance stage and Class B amplifiers provides superimposition of the phases into an output signal. The invention allows frequency output to exceed the maximum frequency of oscillation of a given device technology, such as CMOS in which a 324 GHz VCO in 90 nm digital CMOS with 4 GHz tuning was realized. | 05-06-2010 |
20100134218 | ATTENUATOR WITH A CONTROL CIRCUIT - An attenuator system comprises an attenuator and a control circuit for controlling the attenuation of the attenuator. In one embodiment, the attenuator comprises two diodes or two diode connected transistors, and the control circuit comprises two transistors as the only active devices. In another embodiment, the control circuit comprises another transistor in a shut down circuit. | 06-03-2010 |
20100271136 | Digital Control Interface In Heterogeneous Multi-Chip Module - A front-end module comprises a plurality of chips that includes first and second functional blocks and an interconnection circuit. The first functional block is formed using a first process type and includes a digital control circuit that generates a digital control signal in response to an external control signal from outside the front end module. The second functional block is formed using a second process type and includes a digitally controlled circuit controlled by the digital control signal generated by the first functional block. The second process type is different from the first process type. The interconnection circuit couples the digital control circuit and the digitally controlled circuit to provide the digital control signal to the digitally controlled circuit. In one aspect, the first functional block may be a low noise amplifier formed by a pseudomorphic high electron mobility transistor process. The second functional block may be a power amplifier formed by a heterojunction bipolar transistor process. In another aspect, the first functional block may be a power amplifier formed by a heterojunction bipolar transistor process. The second functional block may be a low noise amplifier formed by a pseudomorphic high electron mobility transistor process. | 10-28-2010 |
20110018624 | INTEGRATED POWER DETECTOR WITH TEMPERATURE COMPENSATION FOR FULLY-CLOSED LOOP CONTROL - An amplifier circuit comprises a detection power input circuit for receiving an RF signal, and a bias circuit that includes an output for generating a bias signal in response to a reference control voltage. The power detector further comprises a detection circuit for generating a power control voltage having a voltage characteristic that offsets temperature characteristics of the received RF signal. The amplifier circuit further comprises a power amplifier coupled to the bias circuit. The power amplifier includes a driver stage providing the RF signal. The detection circuit compensates temperature variation of the inputted detection voltage of the received RF signal. | 01-27-2011 |
20110140798 | TUNABLE ARTIFICIAL DIELECTRICS - Tuning devices and methods are disclosed. One of the devices comprises a metal structure connected with artificial dielectric elements, and variable capacitance devices. Each variable capacitance device is connected with a respective artificial dielectric element and with a control signal. Control of the variation of the capacitance allows the desired tuning. Another device comprises metallic structures connected with artificial dielectric elements and switches connected between the artificial dielectric elements. Turning ON and OFF the switches allows the capacitance between artificial dielectric elements to be varied and a signal guided by the metallic structures to be tuned. | 06-16-2011 |
20110169573 | AMPLIFIER CIRCUIT WITH STEP GAIN - A step gain amplifier has an amplifier with an input and an output, and a bias circuit connected to the input and to a bias node. A passive feedback circuit using only passive elements connects the output to the input. A control circuit is connected to the bias circuit at the bias node. | 07-14-2011 |
20110179333 | LOWER-COMPLEXITY LAYERED BELIEF PROPAGATION DECODING LDPC CODES - Low density parity check (LDPC) decoders are described utilizing a sequential schedule called Zigzag LBP (Z-LBP), for a layered belief propagation (LBP) architecture. Z-LBP has a lower computational complexity per iteration than variable-node-centric LBP (V-LBP), while being simpler than flooding and check-node-centric LBP (C-LBP). For QC-LDPC codes where the sub-matrices can have at most one “1” per column and one “1” per row, Z-LBP can perform partially-parallel decoding with the same performance as C-LBP. The decoder comprises a control circuit and memory coupled to a parity check matrix. Message passage is performed within Z-LBP in a first direction on odd iterations, and in a second direction on even iterations. As a result, a smaller parity check matrix can be utilized, while convergence can be more readily attained. The inventive method and apparatus can also be implemented for partially-parallel architectures. | 07-21-2011 |
20110210767 | PHASE COHERENT DIFFERENTIAL STRUCTURES - Phase-coherent differential structures contain a phase-coherent transformer having two pairs of phase-coherent coupled differential inductors. | 09-01-2011 |
20120007643 | Binary-Weighted Delta-Sigma Fractional-N Frequency Synthesizer With Digital-To-Analog Differentiators Canceling Quantization Noise - A phase lock loop includes a quantization circuit that generators an out of phase noise cancellation signal from an error in a delta-sigma modulator and applies the noise cancellation signal to the charge pump. The quantization circuit includes a digital-to-analog differentiator. The digital-to-analog differentiator may be, for example, a single-bit first-order digital-to-analog differentiator, a single-bit second-order digital-to-analog differentiator, or a full M-bit binary-weighted digital to analog differentiator. | 01-12-2012 |
20120082194 | MILLI-METER-WAVE-WIRELESS-INTERCONNECT (M2W2 - INTERCONNECT) METHOD FOR SHORT-RANGE COMMUNICATIONS WITH ULTRA-HIGH DATA CAPABILITY - A millimeter wave wireless (M2W2) interconnect is used for transmitting and receiving signals at millimeter-wave frequencies for short-range wireless communication with high data rate capability. The transmitter and receiver antennae may comprise an on-chip differential dipole antenna or a bond wire differential dipole antenna. The bond wire differential dipole antenna is comprised of a pair of bond wires connecting between a pair of pads on an integrated circuit (IC) die and a pair of floating pads on a printed circuit board (PCB). | 04-05-2012 |
20130266048 | PERIODIC NEAR FIELD DIRECTORS (PNFD) FOR SHORT-RANGE MILLI-METER-WAVE-WIRELESS-INTERCONNECT (M2W2-INTERCONNECT) - Periodic near field directors (PNFD) are coupled to a transmitter and a receiver for a short-range millimeter wave wireless (M2W2) interconnect for transmitting and receiving radio frequency (RF) signals at millimeter-wave frequencies for short-range communication with high data rate capability between the transmitter and receiver. Each of the periodic near field directors is comprised of one or more periodic coupling structures (PSCs), wherein the periodic coupling structures are comprised of metallic strips positioned such that their lengthwise dimension is substantially perpendicular to a propagation direction of the radio frequency signals between the transmitter and receiver. Each of the periodic coupling structures is positioned parallel to adjacent periodic coupling structures with a separation distance between each periodic coupling structure being within one wavelength of the radio frequency signal. The periodic near field directors may include first and second periodic near field directors that are coupled to each other for transmitting and receiving the radio frequency signals between the first and second periodic near field directors, wherein there is an air gap between the first and second periodic near field directors. | 10-10-2013 |
20130278360 | DIELECTRIC CONDUITS FOR EHF COMMUNICATIONS - Dielectric conduits for the propagation of electromagnetic EHF signals include an elongate body of a dielectric material extending continuously along a longitudinal axis between a first terminus and a second terminus. At each point along the longitudinal axis, an orthogonal cross-section of the elongate body has a first dimension along a major axis of the cross-section, where the major axis extends along the largest dimension of the cross-section. The orthogonal cross-section also has a second dimension along a minor axis of the cross-section, where the minor axis extends along a widest dimension of the cross-section that is at a right angle to the major axis. For each cross-section of the elongate body, the first dimension is greater than the wavelength of the electromagnetic EHF signals and the second dimension is less than the wavelength of the electromagnetic EHF signals. | 10-24-2013 |
20140027638 | REGENERATIVE RECEIVER ARCHITECTURES FOR MILLIMETER-WAVE AND SUB-MILLIMETER-WAVE IMAGING AND COMMUNICATION - A millimeter and sub-millimeter wavelength receiver imaging apparatus and method which directly generates a time encoded digital signal for an imaging pixel in response to interoperation of a digital quench circuit, an envelope detector, and a regenerative oscillator coupled to an antenna. The device utilizes the fact that oscillator startup time in a regenerative oscillator is inversely proportional to injected pixel image power. A digital quench circuit, such as a latch, is coupled for activating and deactivating the regenerative oscillator in response to receiving an output from an envelope threshold circuit, and for generating a time encoded digital signal in response to pixel amplitude during millimeter and sub-millimeter wavelength imaging. Receiver embodiments are described for both fundamental frequency operation (DRR) and for multi-frequency imaging (IRR). | 01-30-2014 |
20150015432 | SUB-CARRIER SUCCESSIVE APPROXIMATION MILLIMETER WAVE RADAR FOR HIGH-ACCURACY 3D IMAGING - A sub-carrier successive approximation (SCSA) radar having a sufficiently high accuracy to capture 3D images of concealed objects. The invention is phase-based, and directly measures round trip time by estimating the phase delay of the carrier. One of its advantages is that the carrier does not need to sweep across a wide frequency range, thereby relaxing RF front-end bandwidth and linearity requirements. SCSA radar accuracy is limited only by the extent of system noise, allowing very high accuracy to be achieved with a sufficient integration period. The SCSA radar can be readily implemented in CMOS, as well as other device technologies, and fabricated within one or more small integrated circuits. | 01-15-2015 |