AcclaimIP-ad

Match Document Document Title
7486135 Configurable, variable gain LNA for multi-band RF receiver  
A configurable LNA architecture for a multi-band RF receiver front end comprises a bank of LNAs, each optimized to a different frequency band, wherein each LNA has a configurable topology. Each...
7486133 Transmitting output stage with adjustable output power and process for amplifying a signal in a transmitting output stage  
In one embodiment of a transmitting output stage, a first controllable amplification device with a first amplification factor and a second amplification device with a second amplification factor...
7482894 Radial power divider/combiner using waveguide impedance transformers  
A radial power divider-combiner is disclosed. Such a radial divider-combiner may include a plurality of waveguides, each of which extends between a central monopole antenna and a respective...
7477108 Thermally distributed integrated power amplifier module  
An integrated power amplifier (PA) module formed on a substrate includes a first cluster of transistor cells positioned in a first portion of the substrate; a second cluster of transistor cells...
7477105 Amplifier arrangement and method for amplifying a signal  
A power amplifier comprises a control signal generator providing a first and a second signal, a first amplifier comprising a first transistor and a first cascode transistor for the amplification...
7474155 Power amplifier  
A power amplifier includes a front-stage amplifier including first and second transistors connected in parallel, and a rear-stage amplifier including a third transistor. The first transistor is...
7474156 Impedance transformer for amplifier and amplifier including the same  
An amplifier has an input port, an output port, N gain elements in parallel, an input power splitter coupled between the input port of the amplifier and the input ports of the N gain elements, an...
7471154 Bias circuit for maintaining high linearity at cutback power conditions  
To improve operation during cutback power mode by reducing gain expansion, sections of a multi-section amplifier are selectively biased. During cutback power condition, fewer than all sections of...
7466203 Solid state microwave power amplifier  
A power amplifier (power amplifier) having multiple solid state sub-amplifiers connected in parallel between the power amplifier input and the power amplifier output are described. The signal...
7459974 System and method for distortion cancellation in amplifiers  
A distortion cancellation amplifier is described having a main amplifier and an error amplifier. The main amplifier, in response to an input signal, generates an output signal having an amplified...
7456687 Amplifier unit and method of detecting failure in the same  
The present invention provides an amplifier unit including a carrier amplifier biased for Class A or Class AB operation; a peak amplifier biased for Class B or Class C operation, wherein an input...
7457592 Polar modulation transmission apparatus and wireless communication apparatus  
Polar modulation transmission apparatus capable of suppressing power loss of a battery supply line to a high-frequency power amplifier regardless of whether transmission power is high or low is...
7456692 Gain variable amplifier  
A gain variable amplifier according to an embodiment of the present invention includes: an amplifier circuit amplifying an input signal with a variable gain; and a gain control circuit controlling...
7449957 Radio frequency power amplifier  
A radio frequency signal RF is input to a base of each of transistors TR1 through TRn via a corresponding capacitor among capacitors C1 through Cn, is amplified, and is output from a collector of...
7436253 Method and system for fast calibration to cancel phase feedthrough  
Methods and systems for fast calibration to cancel phase feedthrough are disclosed and may comprise individually activating each of n binary-weighted cells utilizing a control signal in a power...
7436258 Multi-operational amplifier system  
A multi-operational amplifier system comprises a plurality of operational amplifiers and a controller to configure the plurality of operational amplifiers. The operational amplifiers may be...
7429894 Power device having connection structure compensating for reactance component of transmission line  
Provided is a power device having a connection structure compensating for a reactance component, in which transistors are arranged and connected to minimize deterioration of transistor properties...
7425872 Radio frequency power amplifier  
A bias voltage is applied via a first resistance to the base of a first transistor, and a radio frequency signal is input via a first capacitor to the base of the first transistor. The bias...
7420413 Amplifier circuit of BTL system  
An amplifier circuit of a BTL system is disclosed, which comprises a first operational amplifier which outputs an output signal having a same phase as an input signal input to a signal input...
7417501 Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier  
An amplifier comprises an amplifier circuit which comprises a first inductor as an impedance element for degeneration, and a control circuit which has a second inductor electro-magnetically...
7414468 Amplifier, filter using the same, and radio communication device  
An amplifier includes an amplification unit which amplify a first difference between first and second input signals, a second difference between second and third input signals and a third...
7414478 Integrated parallel power amplifier  
A parallel power amplifier includes a carrier amplifier and peak amplifier coupled to receive signals from a quadrature hybrid made up of slab inductors in an integrated circuit. The slab...
7414465 Amplifier arrangement  
An amplifier arrangement has a first transistor and at least one further transistor. The amplifier arrangement furthermore includes a first coupling impedance, which couples a first supply voltage...
7414477 Distributed amplifier topologies with improved gain bandwidth product  
A distributed amplifier is provided that includes an input network that simulates an input signal transmission line, and having an output network that simulates an output signal transmission line,...
7411450 Circuit and method for amplification of an electrical input signal  
In a circuit and a method for amplification of an electrical input signal, a signal splitter divides the input signal into a first partial signal in a first signal path and a second partial signal...
7411449 Composite power amplifier  
A PAMELA-type of composite power amplifier is configured in such a way that a single power amplifier is operated at low output voltage amplitudes by prohibiting a pair of outphasing power...
7408404 Preserving linearity of an isolator-free power amplifier by dynamically switching active devices  
An amplifier circuit (100) includes a driver stage (120) with active devices (140) for pre-amplification and output of a pre-amplified signal; and an output stage (160) with active devices (180)...
7400200 Linear variable gain traveling wave amplifier  
An integrated circuit including a distributed amplifier is disclosed. The integrated circuit includes a plurality of amplification stages, each stage connected to an input signal and an output...
7400193 Ultra wide band, differential input/output, high frequency active splitter in an integrated circuit  
A wideband splitter includes a core amplifier for receiving a single pair of differential input signals and providing first and second pairs of differential output signals. The first pair of...
7400198 Active circuit having improved linearity using multiple gated transistor  
The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit...
7400199 Semiconductor integrated circuit apparatus  
A capacitor 12 is formed by laminating a lower electrode 12b, a dielectric 12e and an upper electrode 12t in this order. An inductor 14 is formed as a thin metal wiring of a spiral shape so as to...
7397308 Traveling wave amplifier with distributed regenerative feedback between drain-to-drain transmission lines and gate-to-gate transmission lines for enhanced high frequency bandwidth  
An improved traveling wave amplifier is disclosed. The improvements to the traveling wave amplifier disclosed include designing the drain-to-drain and gate-to-gate transmission lines as coupled...
7391259 Power amplifier  
Embodiments of the present invention comprise methods and devices for amplifying a signal by amplifying a first signal and by then amplifying a second signal only if the first signal exceeds a...
7388433 Ground inductance compensated quadrature radio frequency amplifier  
The present invention is a quadrature RF amplifier including an in-phase amplifier leg and a quadrature-phase amplifier leg. The nominal gain of the in-phase amplifier leg is substantially...
7382194 Switched distributed power amplifier  
A switched distributed power amplifier includes an amplifier stage that includes a first amplifier subsection and a second amplifier subsection, both including one or more field effect transistors...
7375588 Transmission amplifier  
A transmission amplifier for amplifying a signal to be transmitted includes an amplifying unit that is warmed efficiently when the temperature is low. In a constitution in which an amplifying unit...
7369822 Segmented switching power amplifier  
A novel transmitter circuit is disclosed for receiving of an input signal and for providing of an amplitude increased RF output signal. Pluralities of switching power amplifiers are disposed along...
7365602 Multilevel power amplifier architecture using multi-tap transformer  
A multi-level power amplifier architecture using a multi-tap transformer implemented on a single CMOS integrated circuit wireless communications device is described. By providing a multi-tap...
7358806 Method and apparatus for an improved power amplifier  
A power amplifier assembly has a first power amplifier with a first input conditioning circuit. At least first and second amplifiers are in parallel with each other and having inputs and outputs....
7345535 Power amplification apparatus of portable terminal  
The present invention relates to a power amplification circuit of a mobile device for improving the efficiency and the linearity properties of the power amplifier. In one embodiment, the power...
7342444 Power amplifying apparatus using asymmetric power drive  
A power amplifying apparatus includes a Doherty amplifier having a carrier amplifier and a peaking amplifier connected in parallel, each having an input/output matching circuit and an asymmetric...
7339435 Amplifier and device having amplifier, and mutual conductance control method  
An amplifier is provided with an amplifier circuit including a plurality of first transistors having gates thereof coupled in common, a bias circuit including a plurality of second transistors...
7336125 Power amplifier and transmitter  
A 90-degree phase delay power divider part PSPD is connected to an input side of a carrier amplifier Amp1 and a peak amplifier Amp2, and a variable electric length power combiner VTL2 is connected...
7336127 Doherty amplifier configuration for a collector controlled power amplifier  
An efficient power amplifier circuitry for a mobile terminal or similar wireless communication device is provided. The power amplifier circuitry includes an output stage configured as a collector...
7333780 Polar modulation transmission apparatus and radio communication apparatus  
A polar modulation transmission apparatus is provided which can adjust synchronization between an amplitude signal and phase signal in a simple configuration accurately and automatically. A polar...
7333831 Interchangeable receive inputs for band and system swappability in communication systems and related methods  
Interchangeable high band low-noise-amplifiers (LNAs) and low band low-noise-amplifiers (LNAs) and related methods are disclosed that greatly enhance the efficiency of designing handsets for...
7330071 High efficiency radio frequency power amplifier having an extended dynamic range  
A system and method are provided for efficiently amplifying a radio frequency signal. In general, the system includes power amplifier circuitry that efficiently amplifies an input signal under...
7330077 Monolithically integrated power amplifier device  
A monolithically integrated microwave frequency high power amplifier device comprises a plurality of transistors connected in a load modulation configuration wherein the number of the transistors...
7323937 Variable-gain amplifier  
A variable-gain amplifier has distortion characteristics (IIP3) improved when the gain is attenuated without impairing characteristics with respect to a gain PG and a noise figure NF when the gain...
7319364 Amplifier circuit having improved linearity and frequency band using multiple gated transistor  
Disclosed herein is an amplifier circuit having improved linearity and frequency band using a MGTR. The amplifier circuit comprises an amplification unit including a main transistor and an...