| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 330053000 | WITH DISTRIBUTED PARAMETER-TYPE COUPLING MEANS | 13 |
| 20080258810 | Method and Apparatus for Optimizing Current Consumption of Amplifiers with Power Control - Apparatus and method for reducing the current consumption and increasing the efficiency of an RF power amplifier (PA), according to which the load, connected to the output stage of the PA, tuned dynamically or statically for each level of the desired output power. By doing so, the output impedance of the output stage is essentially matched, such that the dynamic RF load line has a slope that corresponds to the impedance required to provide this level. Whenever a smaller output power is desired in response to reduction in the input signal to the amplifier, the load is further tuned, such that the dynamic or static RF load line has a slope that causes the power amplifier to essentially remain in saturation at the smaller output power. | 10-23-2008 |
| 20090009241 | Power amplifier using power combiner - Disclosed herein is a power amplifier using a power combiner, which is capable of minimizing power loss and improving efficiency of the power amplifier with a large output power, by combining powers generated by a plurality of power amplifiers used in a wireless communication system using a transmission line transformer. | 01-08-2009 |
| 20090219087 | TRAVELLING WAVE AMPLIFIER - A travelling wave amplifier has two inductive transmission lines ( | 09-03-2009 |
| 20100007411 | PREMIUM POWER AMPLIFIER - The present invention discloses a premium power amplifier applied in an antenna module, and the premium power amplifier includes a first transmission unit, having two symmetrical and identical first arc-shaped circuits, two secondary power amplifiers connected in parallel with each other, and a second transmission unit having two symmetrical and identical second arc-shaped circuits, in which those components above are installed between a power amplifier and an output terminal of the antenna. So that the output power of the antenna can be improved greatly, and the effective transmission distance can be extended. | 01-14-2010 |
| 20110298535 | SYSTEM AND METHOD FOR COMPENSATING FOR CHANGES IN AN OUTPUT IMPEDANCE OF A POWER AMPLIFIER - System and method for compensating for changes in an output impedance of a power amplifier uses an impedance compensating circuit with an impedance inverter coupled to the power amplifier. The impedance inverter of the impedance compensating circuit is configured such that an output impedance of the impedance inverter is proportional to the inverse of the output impedance of the power amplifier to compensate for changes in the output impedance of the power amplifier. | 12-08-2011 |
| 20120126887 | HIGH-EFFICIENCY POWER AMPLIFIER WITH MULTIPLE POWER MODES - In a representative embodiment, a multiple mode power amplifier that is operable in a first power mode and a second power mode. The multiple mode power amplifier comprises a first amplifying unit; a second amplifying unit; a first impedance matching network connected to an output port of the first amplifying unit; a second impedance matching network connected to an output port of the second amplifying unit and to the first impedance matching network; and a third impedance matching network connected to the output ports of the first and the second amplifying units. The third impedance matching network reduces a phase difference between signals amplified by the first and the second amplifying units in the first mode. | 05-24-2012 |
| 20120249232 | TRAVELING WAVE AMPLIFIER WITH PRE-EMPHASIS FUNCTION - A traveling wave amplifier (TWA) primarily for driving a semiconductor optical device is disclosed. The TWA of an embodiment provides a plurality of differential amplifiers of the first type and an additional differential amplifier of the second type, where are they are connected between the input and the output of the TWA. The differential amplifiers of the first type provide a first delay from the input to the output, while, the differential amplifier of the second type provide a second delay longer than the first delay between the input and the output of the TWA. | 10-04-2012 |
| 20130076435 | AMPLIFYING SYSTEM - A system for amplifying an input signal can comprise a main amplifier to amplify a delayed version of the input signal. The system can also comprise a peak amplifier to amplify the input signal upon the input signal reaching a threshold level and disable amplification upon the input signal falling below the threshold level. The system can further comprise a voltage combiner to electromagnetically couple the output of the main amplifier and the peak amplifier, such that an output impedance at an output node of the voltage combiner is a high impedance if the input signal is below the threshold level. | 03-28-2013 |
| 20130093509 | HYBRID COUPLER - A circuit for amplifying an input signal can comprise a plurality of couplers. A splitting coupler of the plurality of couplers can receive the input signal and a combining coupler of the plurality of couplers can provides an output signal. N number of amplifiers can be included in the circuit to amplify the input signal, wherein N is a non-binary integer greater than one. At least one of the plurality of couplers can comprise a hybrid coupler that has two ports terminated into substantially equal reactances. | 04-18-2013 |
| 20140070882 | DISTRIBUTION AMPLIFIER WITH INTELLECTUAL SIGNALING - A distribution amplifier with intellectual signaling comprises a first connector, a first amplifier, a second connector, a power regulator, an inductive coil, a voltage detecting circuit, a first indicating lamp, a second amplifier and a second indicating lamp. The distribution amplifier with intellectual signaling may effectively display whether the distribution amplifier operates normally or not according to the above-mentioned arrangement. | 03-13-2014 |
| 330054000 | Distributed amplifier | 2 |
| 20120194267 | DISTRIBUTED AMPLIFIER FOR BAND PASS RADIO FRONT-END - A distributed amplifier is provided that is broadband and band pass with controllable bandwidth. In the distributed amplifier circuit, termination impedance of the input transmission line is not matched with the characteristics impedance of the input transmission line and/or the termination impedance of the output transmission line is not matched with the characteristics impedance of the output transmission line, thus providing the broadband and band pass with controllable bandwidth attributes. | 08-02-2012 |
| 20170237401 | Amplifier Circuit and Method | 08-17-2017 |
| 330057000 | Artificial line | 1 |
| 20120105147 | MATCHING NETWORK FOR TRANSMISSION CIRCUITRY - The present disclosure relates to transmission circuitry of a wireless communication device. The transmission circuitry includes power amplifier circuitry, an output matching network, and impedance control circuitry. The power amplifier circuitry amplifies a radio frequency (RF) input signal to provide an amplified RF output signal, which is passed through the output matching network and transmitted via one or more antennas. As the center frequency of the RF input signal and conditions of operating parameters change, the impedance control circuitry adjusts the values of one or more variable impedance elements of the output matching network in a desired fashion. The values of the variable impedance elements are adjusted such that the output matching network concurrently and dynamically presents the desired load impedances at the center frequency and at one or more harmonics of the RF input signal to achieve a given performance specification. | 05-03-2012 |
