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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...
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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...
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7525384 |
Transmission line amplifier
A transmission line amplifier utilizes a transmission line transistor having a gate line, and first and second lines. The gate line is a gate of the transistor, one of the first and second lines is...
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7508267 |
GaN based digital controlled broadband MMIC power amplifier
A power amplifier comprises a distributed pre-driver, digital signal adjuster, a distributed high power amplifier; and an integrated coupler-detector unit. The distributed pre-driver, the digital...
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7432922 |
Source driver and source driving method
A source driver for LCD devices, used for driving at least one data line, comprises an input for receiving a predetermined voltage; an output electrically being connected to the data line and...
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7315206 |
Travelling-wave amplifier
A traveling-wave amplifier includes amplifiers coupled anti-parallel to transmission lines. Phase(s) of the amplifiers provide phase matching, which may additionally or alternately be provided by...
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7239852 |
Asymmetric, optimized common-source bi-directional amplifier
A common source, bi-directional microwave amplifier is described. More particularly, the present invention is a microwave, common source, bi-directional amplifier that includes a first...
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7233207 |
System and method for providing an input to a distributed power amplifying system
A system and a method for providing an input to a distributed power amplifying system are provided. In an embodiment, a distributed power amplifying system includes a plurality of amplifying...
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7194390 |
Predictor of minimal noise figure for wideband amplifier
A predictor allows the computation of the greatest lower bound of the noise figure pertaining uniformly over the operating band of a wideband amplifier. This computation is done directly from...
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7132894 |
Differential traveling wave driver amplifier
In one embodiment, the present invention includes a differential traveling wave amplifier having a lumped differential preamplifier stage and a distributed differential amplifier stage coupled by a...
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6930557 |
Multi-stage amplifier
A multi-stage amplifier includes first and second amplifier stages, and first and second capacitors. The first amplifier stage includes a input line having a first input end and a second input end;...
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6930556 |
Active-loop, spatially-combined amplifier
A system for amplifying a signal is provided. The system includes a wave guide and an active loop amplifier disposed in the wave guide. The active loop amplifier receives the signal and generates a...
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6900695 |
Reconfigurable broadband active power splitter ditto power combiner and ditto bidirectional power splitter/power combiner and circuits based on these
A distribution network which can be an active power splitter or an active power combiner or alternatingly power splitter and such a power combiner. The power splitter consists of two distributed...
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6894566 |
Active load device that enables biasing of a very wide band distributed amplifier circuit with gain control
The invention relates to a very wide band amplifier circuit including a distributed amplification cell ( 100 ) connected to a biasing cell ( 200 ), the amplification cell ( 100 ) including several...
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6794934 |
High gain wideband driver amplifier
Methods and circuitry for implementing monolithic high gain wideband amplifiers. The invention implements an amplifier with a limiter that also performs a signal dividing function. In a specific...
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6788149 |
Broad-band biasing system for biasing an electronic circuit and an amplifier incorporating the system
A biasing system for biasing an electronic circuit includes a resistance connected in series with a transmission line which has a characteristic impedance substantially equal to the resistance and...
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6778015 |
Distributed amplifier
A distributed amplifier having a plurality of cascode amplifying circuits, and which causes little deterioration of the output waveform. In a preferred embodiment, the source potentials of the...
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6768378 |
Distributed RF power amplifier with load compensation
A radio frequency power amplifier circuit according to certain embodiments of the present invention uses a distributed radio frequency amplifier 110 having a plurality of stages each with an...
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6759907 |
Distributed level-shifting network for cascading broadband amplifiers
A distributed and adjustable level-shifting network is integrated with cascaded amplifiers, eliminating the need for a direct current (dc) blocking capacitor between the amplifiers. The...
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6747511 |
Distributed amplifier with pi-configuration analysis and synthesis lines
A distributed amplifier for wide-band, high power application is disclosed. The amplifier consists of an analysis module, a gain module and a synthesis module. In the analysis and synthesis...
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6741126 |
Low noise amplifier arrangement
An amplifier arrangement ( 10 ) comprises an input node ( 24 ) and an output node ( 26 ). A plurality of amplifiers ( 20.1 ) to 20.4 ) are connected in respective parallel paths ( 28.1 to 28.4 )...
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6737921 |
Distributed amplifier and differential distributed amplifier
Four unit FETs are linearly disposed in the length direction of the belt-shaped gate electrode. The neighboring drain electrodes and the neighboring gate electrodes are connected through...
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6650200 |
Dynamic combiner/splitter for RF signal systems
A circuit for dynamically combining/splitting power amplifier outputs having at least four power input ports. The input ports are joined by a 360 degree transmission line having three switches...
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6597243 |
Distributed amplifier having a tapered transconductance architecture
A distributed amplifier having an improved transimpedance and/or gain comprises an input transmission line, the input transmission line forming an input of the distributed amplifier and having a...
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6567327 |
Driving circuit, charge/discharge circuit and the like
To provide a driving circuit constituted by a first output stage including a charging means and a first constant current circuit, a second output stage including a discharging means and a second...
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6486756 |
Superconductor signal amplifier
A superconductor signal amplifier which receives an extremely small high-frequency signal having a frequency of tens of GHz generated in a superconductive circuit, amplifies the voltage of the...
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6342815 |
Manufacturable HBT power distributed amplifier for wideband telecommunications
A power distributed amplifier that provides a high power output and a wide bandwidth. The amplifier includes an input and output load termination resistors opposite respective input and output ends...
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6121833 |
High-gain amplifier
To implement a high-gain amplifier in a microwave frequency band, it is proposed to interconnect amplification circuits and to cover the housing that contains them with a lid. In the space between...
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6094099 |
High dynamic range variable gain distributed amplifier
A dc distributed Gm gain control circuit formed from differential bipolar distributed amplifier topology. In accordance with an important aspect of the invention, the distributed Gm gain control...
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6049250 |
Dittributed feed back distributed amplifier
A distributed amplifier topology with distributed feedback includes a plurality of amplifier stages, each of which includes a FET, MESFET or HEMT. A negative feedback network is provided with each...
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6008694 |
Distributed amplifier and method therefor
A distributed amplifier (10) configured to amplify an input signal (20) is presented. Within the amplifier (10), a first input phase-shift element (40) shifts the input signal (20) into a first...
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5920230 |
HEMT-HBT cascode distributed amplifier
A distributed amplifier formed from high electron mobility transistors (HEMTs) and a heterojunction bipolar transistor (HBT) configured in a cascode arrangement in which a common source FET, such...
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5751190 |
Gain-controlled amplifier and distributed amplifier
A gain-controlled amplifier has a transistor amplifier circuit and a transistor output circuit. The transistor amplifier circuit has an emitter coupled transistor pair for performing signal...
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5689210 |
Active distributed signal sampler
A circuit that samples a through signal, while minimizing attenuation, distortion, or other perturbation to the through signal and sampled signal. The present invention provides for an active...
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5654670 |
Active distributed signal injector
A circuit that injects an auxiliary signal into an existing signal path, thereby adding it to an existing main signal, while minimizing attenuation, distortion, or other perturbation to the main...
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5559472 |
Loss compensated gain cell for distributed amplifiers
An amplifier includes an amplifier input and an amplifier output. A gain cell is coupled between the amplifier input and the amplifier output and provides gain. The gain cell includes an input...
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5550513 |
High frequency, differential limiting distributed amplifier
A fully differential distributed amplifier for providing a high frequency, high power output. The inherent base-collector capacitance of the output power transistors of each distributed amplifier...
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5504465 |
Microwave modulator having adjustable couplers
A multifunction microwave modulator circuit has an input signal splitter to provide two equal amplitude signal components. A phase quadrature relationship between the two signal components is...
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5414387 |
Distributed amplifier and bidirectional amplifier
A distributed amplifier includes an input side circuit including a plurality of distributed constant lines connected in series between an input terminal and ground and a plurality of...
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5412339 |
High frequency amplifier
A high frequency amplifier has a distributed amplifier having a sufficiently wide band and formed on a microwave integrated circuit, and at least one bandpass filter directly connected to the...
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5412285 |
Linear amplifier incorporating a field emission device having specific gap distances between gate and cathode
One embodiment of the present invention is a linear amplifier based on a field emission device that is driven at its input in current-mode. The ratio (gamma) of the separation distance between the...
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5367267 |
Broadband amplifier having individual input circuits with pluralities of capacitors and resistors
In a broadband amplifier having an upper limit frequency of several GHz that is composed of a plurality of transistors connected in parallel, the control terminals (gates) of the transistors are...
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5361038 |
Active load applications for distributed circuits
An active load applied to the gate transmission line termination of distributed power devices reduces the low frequency noise power appearing at the output of the device. The active load, including...
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5349306 |
Apparatus and method for high performance wide-band power amplifier monolithic microwave integrated circuits
A distributed amplifier produced from monolithic microwave integrated circuit (MMIC) processes employs a bandpass filter structure as opposed to a low-pass filter network to enhance gain,...
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5329248 |
Power divider/combiner having wide-angle microwave lenses
A microwave power divider/combiner (10) comprises a preamplifier (12), a first microwave lens (14), a plurality of amplifiers (16), and a second microwave lens (18). The preamplifier (12) is...
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5274339 |
Gain compensation circuit
A circuit for compensating for GaAs FET amplifier gain variations over a frequency band as a function of temperature. The circuit includes a passive equalizer circuit having a fixed gain over the...
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5227734 |
Broadband bipolar transistor distributed amplifier
A distributed circuit includes a plurality of pairs of cascode coupled first and second transistors with each transistor having base, emitter, and collector electrodes. The first transistor of each...
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5223800 |
Distributed arrays of microelectronic amplifiers
A distributed array of microelectronic triodes constitutes a series of banks of triodes arranged in a concentric configuration. Each triode in the bank is a microelectronic triode fabricated by...
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5208547 |
Distributed amplifier having negative feedback
A radio frequency amplifier including a plurality of field effect transistors having input electrodes successively coupled by an input propagation network and output electrode successively coupled...
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5196805 |
Distributed differential amplifier arrangement
A N-stage differential distributed amplifier arrangement. The differential distributed amplifier arrangement includes a parallel connection of N-differential amplifiers. The inputs to the...
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