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7705681 Apparatus for coupling at least one of a plurality of amplified input signals to an output terminal using a directional coupler  
An apparatus has an input terminal configured to receive an input signal, a network coupled to the input terminal and configured to provide a plurality of amplified input signals, and a...
7705684 Transistor and routing layout for a radio frequency integrated CMOS power amplifier device  
An integrated CMOS power amplifier system to improve amplifier performance, the integrated CMOS power amplifier system including a plurality of differential main amplifier cores, a plurality of...
7701292 Programmable gain amplifier with noise cancellation  
A wide-band adjustable gain low-noise amplifier (LNA) is disclosed. In various embodiments, the LNA includes a first inverting amplifier configured to generate a first intermediate signal. A first...
7701286 Multibit digital amplifier for radio-frequency transmission  
A broadband multibit digital radio-frequency (RF) signal is synthesized digitally. to convert the digital signal to a high-power analog signal for RF transmission. Each bit (or cluster of bits) of...
7696841 Power amplifier utilizing quadrature hybrid for power dividing, combining and impedance matching  
A power amplifier includes a quadrature hybrid and input impedance matching network. The power amplifier also includes at least one amplifier that includes an output electrode, and a quadrature...
7688135 N-way Doherty distributed power amplifier  
A power amplifier using N-way Doherty structure for extending the efficiency region over the high peak-to-average power ratio of the multiplexing modulated signals such as wideband code division...
7675365 Systems and methods for power amplifiers with voltage boosting multi-primary transformers  
Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port....
7663434 Doherty amplifier  
The present invention relates to the construction of output stage of the Doherty amplifier and comprises a main amplifying unit, an auxiliary amplifying unit and a compact λ/4 line connecting two...
7663440 Amplifier circuit, semiconductor device, and controlling method  
An amplifier circuit including a plurality of CMOS (Complementary Metal Oxide Semiconductor) inverter circuits connected in parallel with each other. The CMOS inverter circuits each include a...
7663442 Data receiver including a transconductance amplifier  
According to one embodiment, a system, apparatus, and method for receiving high-speed signals using a receiver with a transconductance amplifier is presented. The apparatus comprises a...
7649412 High efficiency amplifier  
When an input signal level is small, the electrical length of a phase line 21 and the electrical length of a phase line 23 are set in such a manner that the impedance seen by looking into the...
7649411 Segmented power amplifier  
A system for amplifying a signal is provided. The system includes a plurality of driver stages, each having an input, an output, and a disable control. An output stage having an input is coupled...
7646248 Harmonic tuned doherty amplifier  
Disclosed is a Doherty amplifier including a carrier amplifier to perform a signal amplification operation regardless of a level of an input signal, a peaking amplifier to perform an amplification...
7639075 Wide-band adjustable gain low-noise amplifier  
A wide-band adjustable gain low-noise amplifier (LNA) is disclosed. In various embodiments, the LNA includes a first sub-circuit and a second sub-circuit coupled in parallel. In various...
7636017 High-frequency power amplifier  
Amplification transistors respectively amplify an input signal. The output terminals of the amplification transistors are connected in series through respective transmission lines. A harmonic...
7633345 Amplifier and the method thereof  
An amplifier amplifying an input signal and the method thereof. The amplifier comprises an impedance matching network and a transconductor amplifier. The impedance matching network receives the...
7626454 Radio frequency signal amplifying device  
There is provided a radio frequency (RF) signal amplifying device consuming less power and operable at a high voltage in a PA driving amplifying apparatus applicable to a PA amplifying circuit...
7616061 Low noise amplifier for ultra wide band  
A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel,...
7612612 Calibration circuitry and delay cells in rectilinear RF power amplifier  
Methods to implement low cost, high efficiency, low loss power combiner with novel matching circuits are disclosed. A narrow band power combiner enables a high power and high efficiency radio...
7602241 Multiband Doherty amplifier  
A multiband Doherty amplifier having a configuration including a divider which divides an input signal into two, a carrier amplifier which amplifies one of the divided signals, a delay element...
7598804 Amplifier circuit  
There is provided an amplifier circuit including a plurality of unit amplifiers connected in parallel to an input signal terminal, wherein each of the unit amplifiers includes: a first switch...
7598810 Power amplifier having input ends combined in series and output ends combined in series  
A power amplifier includes a first transformer, a first transistor, a first resistor, a second transformer, a second transistor, a second resistor, and a bias circuit. The first transformer drives...
7598809 RF power amplifier  
An RF power amplifier includes a plurality of amplifier cells. Each amplifier cell includes a bipolar transistor and a base circuit that comprises an RF coupling capacitor, a bias resistor, a base...
7595688 High power commutating multiple output amplifier system  
An amplifier system includes a power divider for dividing an input RF signal into M RF signals of equal power and phase. The system has M low power selectable phase shifters each for phase...
7589593 Amplifier circuit having stacked main amplifier and parallel sub-amplifier  
An amplifier circuit for amplifying an input signal to generate an output signal is provided. The amplifier circuit has a stacked main amplifier, a parallel sub-amplifier, and a signal combiner....
7586374 Wireless communication unit, integrated circuit and biasing therefor  
A wireless communication unit comprises a semiconductor power amplifier device and a bias control circuit therefor. The bias control circuit comprises a detector for detecting at least a portion...
7579913 Low power comsumption, low noise and high power gain distributed amplifiers for communication systems  
Provided is a distributed amplifier in communication systems, including: an input transmission line; an output transmission line; an input impedance match and an output impedance match, for...
7576611 Systems and methods for high frequency electronic power conversion and amplification  
An electronic power amplifier includes a plurality of cells, each cell comprising a DC input port for accepting a DC input power from a voltage source VG, an AC input port for accepting an AC...
7570111 Apparatus and method for wideband amplification of RF signals  
The present invention is directed to an apparatus and method for wideband amplification of RF signals. A wideband amplification apparatus in accordance with the present invention may comprise: (a)...
7570932 Dual mode quadrature radio frequency power amplifier  
The present invention is a dual mode quadrature RF power amplifier system that is efficient and meets linearity requirements in both modes of operation. In a high power mode of operation, the...
7560989 Power amplifier with controlled output power  
The invention includes a power amplifier with an amplifier core including parallel amplifier cells, a replica cell made of one amplifier cell similar to those of the amplifier core, a power...
7560983 Multiple-path power amplifier  
An amplifier circuit and method for amplifying a signal efficiently over a plurality of power ranges. The amplifier circuit including a strong amplifier which is efficient over a first power range...
7548118 Semiconductor device and power amplifier  
A semiconductor device 1 includes a plurality of amplifier circuits 2 connected in parallel between an input terminal RFin and an output terminal RFout. Each of the amplifier circuits 2 includes...
7541866 Enhanced doherty amplifier with asymmetrical semiconductors  
The present disclosures an amplification unit which comprises a first amplifier and a second amplifier connected in parallel, the first amplifier and the second amplifier comprising semiconductor...
7539269 Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers  
A power synthesizer is in several (n) discrete stages, each stage having a discrete amplitude, constant envelope amplifier coupled in series with a continuous phase modulator. Each modulator is...
7535304 Amplifier coupling on a reduced area  
The invention discloses an amplifier (200, 400, 500) coupling comprising a first (230), a second (240), a third (250) and a fourth (260) transistor, additionally comprising a signal input port...
7532073 Solid state power amplifier with multi-planar MMIC modules  
A solid state power amplifier (SSPA) system may include a radio frequency (RF) input, an RF waveguide split block, multiple monolithic microwave integrated circuit (MMIC) power amplifier modules,...
7526261 RF power transmission, modulation, and amplification, including cartesian 4-branch embodiments  
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying...
7526260 Apparatus, methods and articles of manufacture for linear signal modification  
Apparatus, method and article of manufacture are shown for linear signal modification. An input signal is modified by providing one or more non-linear current sources and regulating at least one...
7525385 Common drain driven cascode enhancement mode traveling wave amplifier  
A traveling wave amplifier includes a synthetic gate line, a synthetic drain line and a plurality of common drain driven cascode transistor circuits each connected between the synthetic gate line...
7522672 Digital branch calibrator for an RF transmitter  
The present invention provides a digital (computational) branch calibrator which uses a feedback signal sensed from an RF transmit signal path following the combining stage of LINC circuitry of a...
7521995 Inverted doherty amplifier with increased off-state impedence  
An amplifier that amplifies an input signal and provides the amplified signal to a load at a summing junction that has a first impedance value. The amplifier includes a splitter network receiving...
7514995 Standby and concurring system of a power amplifier and method for power amplifying  
A power amplifier system including: M main power amplifiers and one standby power amplifier, where M is a positive integer; an input switching module, connected to the inputs of the M main power...
7511575 High-frequency power amplifier  
A high-frequency power amplifier has an FET element having a unit FETs in multifinger form, and having a gate pad through which a signal is input, a source pad that is grounded, and a drain pad...
7508268 Power amplifier and transmission and reception system  
A power amplifier includes: a first multi-finger FET formed on a semiconductor substrate; a second multi-finger FET formed on the semiconductor substrate; a first temperature detector which...
7498878 Multi-path doherty amplifier and control method of a multi-path doherty amplifier  
Embodiments of the present invention may provide a Doherty amplifier that includes a first amplifying path and at least one second amplifying path. The first amplifying path may include a carrier...
7498883 Distributed amplifier with built-in filtering functions  
A distributed amplifier uses non-uniform filtering structures to provide better control over pass-band and stop-band characteristics. The various sections can have different tap coefficients. A...
7489197 Coupling net and MMIC amplifier  
Microwave coupling network comprising a passive resistive pi net and a coupling capacitor is coupled to a branching point. The branching point is coupling to respectively a plurality of common...
7486141 Wide bandwidth, high power amplifier  
A wide bandwidth, high power amplifier system for amplifying a signal in a radio frequency (RF) system in a specific bandwidth within the frequency range from 1 MHz to 100 GHz. The system includes...
7486136 Power amplifier  
A power amplifier has at least a first amplifier circuit with an output port and at least a second amplifier circuit with an output port. The power amplifier further has at least a coupler with a...