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9041473 Power amplifier  
A power amplifier includes: first and second bias terminals to which bias voltages are respectively supplied; a first transistor having a first control terminal connected to the first bias...
9035697 Split amplifiers with improved linearity  
Split amplifiers with configurable gain and linearization circuitry are disclosed. In an exemplary design, an apparatus includes first and second amplifier circuits and a linearization circuit,...
9035703 Tunable wide band driver amplifier  
A tunable wide band driver amplifier is disclosed. In an exemplary embodiment, an apparatus includes a first band selection circuit selectively connected between an output terminal of an amplifier...
9031517 Transmit-receive front end  
The present invention discloses a transmit-receive (TR) front end. The TR front end includes a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a...
9000747 Single supply amplifier with swing to ground  
An amplifier circuit has a voltage input terminal, for receiving Vin, and a voltage output terminal, for outputting Vout. A feedback circuit controls Vout to match Vin. A differential input stage...
8994451 RF amplifier  
An RF amplifier suitable for use in an RF transceiver has a circuit including a first transistor pair with the collector of each coupled to one of the two differential output nodes and a common...
8975968 Amplifiers with improved isolation  
Amplifiers with improved isolation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes an amplifier having a gain transistor, first...
8937510 Operational amplifier module and method for enhancing driving capability of operational amplifier circuit  
An operational amplifier module including an operational amplifier circuit and a comparator circuit is provided. The operational amplifier circuit includes an input stage circuit and an output...
8928414 Power amplifier with low noise figure and voltage variable gain  
The object of the present invention is a low noise figure amplifier with a variable gain which comprises a cascode amplification stage comprising, serially mounted, a low-voltage MOSFET transistor...
8928415 Adjustable gain for multi-stacked amplifiers  
Techniques for providing adjustable gain in an amplifier. In an aspect, a composite amplifier having adjustable gain includes a plurality of amplifiers coupled in parallel, wherein each of the...
8890623 System and method for reducing stress in a cascode common-source amplifier  
A method of reducing stress in a cascode common-source amplifier including a first transistor and a second transistor connected in a cascode arrangement. The method includes providing an input...
8890622 Cascode amplifier  
A cascode amplifier includes: first transistors; second transistors cascode-connected with respective first transistors; a first line connected at spaced points to control terminals of the first...
8872590 Low-noise signal amplifying circuit and method thereof  
A signal amplifying circuit includes: a first transistor having a first connecting terminal coupled to an input signal, and a controlling terminal coupled to a first reference voltage; an...
8860508 Digitally controlled wideband variable gain amplifier  
A variable gain amplifier having a stacked configuration of cascode connected groups of NPN transistors is arranged in a compact schematic design. A differential radio frequency input signal is...
8854144 High voltage amplifiers and methods  
Some embodiments provide an amplifier apparatus, comprising: a plurality of amplifier transistor circuits coupled in series, wherein each of the plurality of amplifier transistor circuits...
8847685 Push-pull amplifier and differential push-pull amplifier  
A push-pull amplifier includes an amplifier input, a push amplifier stage, a pull amplifier stage and an inverting amplifier output.
8847689 Stacked amplifier with diode-based biasing  
Techniques for improving linearity of amplifiers are described. In an exemplary design, an amplifier (e.g., a power amplifier) may include a plurality of transistors coupled in a stack and at...
8830000 Multi-band amplifier and method of amplifying multi-band  
Provided is a multi-band amplifier and a method of amplifying a multi-band. The multi-band amplifier includes a wireless signal input terminal into which a first frequency band signal and a second...
8823458 Circuit and power amplifier  
A cascode circuit includes a first transistor and a second transistor. The first transistor and the second transistor are connected to make a cascode. In addition, the circuit has a block...
8816769 Differential stacked output stage for power amplifiers  
A power amplifier system includes a transistor stack and an upper portion. The upper portion includes an LC tank. The LC tank is configured to generate selected harmonics to mitigate voltage...
8816771 Signal amplifying circuit with reduced output signal noise by introducing coupling effect and related method thereof  
A signal amplifying circuit includes: an input stage circuit, arranged to receive an input signal; a first inductive device coupled between the input stage circuit and a first reference voltage;...
8803614 Current reuse electronic device based on magnetic coupling components  
A current reuse device including a first stage provided with a first input for a first input signal and a first output for a first output signal; a second stage comprising a second input for a...
8797104 Amplifier with floating well  
A low-noise amplifier includes a first transistor having a gate configured to receive an oscillating input signal and a source coupled to ground. A second transistor has a source coupled to a...
8791756 Amplifying circuit and wireless communications apparatus including the same  
The amplifying circuit includes: an input transistor having a gate electrode connected to a signal input terminal inputting a wireless signal, a drain electrode connected to a power supply...
8779859 Multi-cascode amplifier bias techniques  
Techniques for generating bias voltages for a multi-cascode amplifier. In an aspect, a multi-cascode bias network is provided, each transistor in the bias network being a replica of a...
8779860 Power amplifier  
A power amplifier comprises a common source amplification stage and a first common gate amplification stage. The common source amplification stage includes a common source transistor for receiving...
8754712 System and method for a cascoded amplifier  
In accordance with an embodiment, a system includes a first transistor and a second transistor. The first transistor has a first input node coupled to a first signal input, a first output node...
8742853 Low-stress cascode structure  
An amplifier system comprises a cascode common-source (CS) amplifier including a plurality of transistors connected in a common-source configuration. A stress reducing circuit is connected to at...
8736383 Power amplifier circuit and control method  
A power amplifier circuit uses an output transistor and a cascode transistor. First and second drive circuits apply gate control signals to the two transistors, which rise and fall in synchronism,...
8736382 Low power wide-band amplifier with reused current  
In one embodiment, an apparatus includes a first amplification block configured to receive a signal and a second amplification block configured to output the signal. The outputted signal is an...
8717097 Amplifier with improved noise reduction  
An amplifier with improved noise reduction is disclosed. In one implementation, an amplifier is provided that includes a main output stage configured to output an amplified signal at a main output...
8704597 Amplifiers and related receiver systems  
Apparatus are provided for amplifier circuits and related receiver systems. An amplifier circuit includes a first common-source amplification stage and a second common-source amplification stage....
8686796 RF power amplifiers with improved efficiency and output power  
Amplifiers with improved efficiency and output power are described. In an exemplary design, an apparatus includes an amplifier having at least three transistors and at least two capacitors. The at...
8680928 Power amplifier including variable capacitor circuit  
A power amplifier includes first and second amplification stages. The first amplification stage is configured to amplify a radio frequency (RF) input signal. The second amplification stage...
8665027 Amplifier for wireless receiver and associated method  
An amplifier for wireless receivers and an associated method is provided. The amplifier provides an output signal to an output terminal in response to an input signal received from an input...
8665016 Supply tracking  
A power amplifier includes generation, tracking and usage of an envelope of an input RF signal. To improve upon the efficiency of the power amplifier, various configurations include using the...
8648656 Low-noise amplifier with through-mode  
The low-noise amplifier with through mode is configured such that a source grounded transistor and a gate grounded transistor are connected in cascode, and a load impedance element and a switching...
8649751 Receiver  
Disclosed herein is a receiver, including: an amplifier for amplifying a received signal; a strain compensator for having a function of compensating for a strain generated in an output signal from...
8633771 Power amplifier  
There is provided a power amplifier including an amplifying unit having at least two cascode amplifiers connected in parallel to amplify an input signal; and a bias supply unit supplying bias...
8629723 Low noise amplifier including a single-ended input  
A low-noise amplifier (LNA) includes an input terminal for receiving an input signal, an output terminal for providing an output signal related to the input signal. The LNA further includes a...
8626106 Method and apparatus of an input resistance of a passive mixer to broaden the input matching bandwidth of a common source/gate LNA  
A cascode common source and common gate LNAs operating at 60 GHz are introduced and described. The cascode common source LNA is simulated to arrive at an optimum ratio of upper device width to the...
8624678 Output stage of a power amplifier having a switched-bulk biasing and adaptive biasing  
A power amplifier (PA) using switched-bulk biasing to minimize the risk of output stage snapback effect is disclosed. An adaptive biasing of the output stage prevents device breakdown while...
8588433 Electret microphone circuit  
There is disclosed a microphone, a circuit, and a method. A microphone capsule may include an electret microphone and a field effect transistor (FET). A floating DC voltage source may have a first...
8558619 Silicon-on-insulator high power amplifiers  
Illustrative embodiments of power amplifiers are disclosed. In one embodiment, a power amplifier includes a plurality of transistors formed on a silicon-on-insulator (SOI) substrate such that the...
8542064 Methods and apparatus to control power in a printer  
Methods and apparatus to control power in a printer are disclosed. An example apparatus includes a first field effect transistor having a first terminal, a second terminal, and a third terminal,...
8519797 Power amplifier and method for controlling power amplifier  
A power amplifier includes a first transistor, a second transistor and a bias voltage generator. The first transistor includes a gate electrode, a first electrode and a second electrode, where the...
8514015 Amplifier with programmable off voltage  
An amplifier with multiple stages and having improved reliability is described. The multiple amplifier stages are coupled in parallel and include at least one switchable amplifier stage. Each...
8502600 Combiner-less multiple input single output (MISO) amplification with blended control  
Multiple-Input-Single-Output (MISO) amplification and associated VPA control algorithms are provided herein. According to embodiments of the present invention, MISO amplifiers driven by VPA...
8493154 Linearity enhancement on cascode gain block amplifier  
A cascode amplifier circuit having substantial linearity, while maintaining other advantages of cascode amplifiers such as relatively high input-to-output isolation and relatively high gain. The...
8487706 Stacked linear power amplifier with capacitor feedback and resistor isolation  
A power amplifier with stacked, serially connected, field effect transistors is described. DC control voltage inputs are fed to the gates of each transistor. Capacitors are coupled to the...