Class 330/305 - And tuning means

Subclass of Class 330 - Amplifiers
Definition: Subject matter including a manually adjustable frequency
No. of applications: 31
Last issue date: 05/03/2012

Application No.	Application Title	Issue Date
20120106524	TUNABLE POWER AMPLIFIER USING LAMINATE MEMS CAPACITORS For use in a wireless network, a tunable power amplifier circuit includes a power amplifier transistor and a plurality of laminate MEMS (microelectromechanical system) capacitors coupled to the power amplifier transistor. The laminate MEMS capacitors are arranged in a t...	05/03/2012
20100259331	HIGH-LINEARITY LOW NOISE AMPLIFIER Embodiments of a high-linearity low-noise amplifier (LNA) are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier. The cascode amplifier may include integrated notc...	10/14/2010
20090206935	Reconfigurable Circuit to Compensate for a Low Noise Amplification Input Matching Variation and a Method for Its Configuration A method for changing an effective capacitance of an amplifier circuit having a match transistor and a coupled cascode transistor includes changing an on-state of at least one of a plurality of sub-transistors of the match transistor. The method further includes changin...	08/20/2009
20090189697	AUTO-TUNING AMPLIFIER This document discloses, among other things, a front end circuit having a selectable center frequency. The center frequency is selected based on a control signal proportional to a phase difference between a reference frequency and an amplifier output. A resonant frequen...	07/30/2009
20090096533	ADAPTIVELY TUNED RF POWER AMPLIFIER An adaptively tuned RF power amplifier includes at least one power amplifier stage that has one or more active elements. A tunable output network is coupled to the power amplifier stage and includes one or more adjustable reactive elements. A mismatch detector detects a...	04/16/2009
20090051441	LOW-NOISE AMPLIFIER Methods and corresponding systems in a low noise amplifier include selecting a selected sub-band for amplifying, wherein the selected sub-band is one of a plurality of sub-bands, wherein each sub-band is a portion of a frequency band, and wherein each sub-band has a cor...	02/26/2009
20090039964	LOW-NOISE AMPLIFIER CIRCUIT AND RECEIVING SYSTEM In a broadband low-noise amplifier circuit to be used in a multichannel reception system, a capacitance of a variable capacitor (9) is controlled by a resonance frequency control circuit (4) so that a resonance frequency of a load unit (2) comprisin...	02/12/2009
20090002077	Monolithic flexible power amplifier using integrated tunable matching networks A flexible power amplifier can be adapted during operation for use in connection with two or more different wireless standards. In at least one embodiment, adaptations to power transistor size, RF bias current, and matching are made when a corresponding multi-standard w...	01/01/2009
20080297261	Circuits and Methods for Implementing Transformer-Coupled Amplifiers at Millimeter Wave Frequencies Circuits and methods are provided for building integrated transformer-coupled amplifiers with on-chip transformers that are designed to resonate or otherwise tune parasitic capacitances to achieve frequency tuning of amplifiers at millimeter wave operating frequencies....	12/04/2008
20080074195	Adaptive tuning circuit to maximize output signal amplitude for an amplifier An adaptive tuning circuit to maximize the output signal amplitude of a band-pass amplifier, comprising a control circuit to tune the peak frequency of the amplifier by monitoring the change in the output signal amplitude over two successive time sampling intervals. In ...	03/27/2008
20080030279	Circuit with Q-enhancement cell having feedback loop According to an example embodiment, an amplitude feedback loop may include an RF amplifier, a detector, a comparator, and a Q-enhancement cell. In an example embodiment, the RF amplifier has an output signal, and the detector has an input coupled to the output signal of...	02/07/2008
20080030280	Circuits and Methods for Implementing Transformer-Coupled Amplifiers at Millimeter Wave Frequencies Circuits and methods are provided for building integrated transformer-coupled amplifiers with on-chip transformers that are designed to resonate or otherwise tune parasitic capacitances to achieve frequency tuning of amplifiers at millimeter wave operating frequencies. ...	02/07/2008
20070229171	Wireless transmitter having multiple programmable gain amplifiers (PGAs) with tuned impedance to provide substantially linear response A method and apparatus are provided for enabling a transmitter to have a substantially linear magnitude response and a substantially linear phase response. The transmitter includes first and second programmable gain amplifiers (PGAs). The first PGA is tuned to have a re...	10/04/2007
20070222524	Antenna Amplfier An antenna amplifier includes at least one input for connecting to an antenna and at least one output for connecting to a receiver, as well as at least one means of signal-level matching positioned between the input and the output. The antenna amplifier improves the noi...	09/27/2007
20070216482	High linearity and low noise amplifier with continuously variable gain control An amplifier, tuner, and method of amplification are provided. The amplifier has a pair of transistors. Each transistor has a control terminal and an output terminal disposed between the transistor and a power supply input. A first network is connected between each powe...	09/20/2007
20070188240	ULTRA-WIDEBAND CONSTANT GAIN CMOS AMPLIFIER Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mention...	08/16/2007
20070057731	On-chip harmonic termination for RF power amplifier applications A radio frequency (“RF”) amplifier as disclosed herein includes an on-chip power transistor formed on a substrate and an on-chip harmonic termination formed on the same substrate. The on-chip harmonic termination is configured to provide a short-circuit termination ...	03/15/2007
20070046368	CIRCUIT FOR CREATING TRACKING TRANSCONDUCTORS OF DIFFERENT TYPES Systems and method for tracking different types of transconductance cells is shown and described. In these multi-cell systems, the addition of one or more tracking control modules allows circuit designers to advantageously incorporate multiple transconductor topologies ...	03/01/2007
20070024377	Impedance matching techiques for multi-band or wideband RF amplifiers and associated amplifier designs Multi-band or wideband impedance matching in RF amplifiers is disclosed, using variable negative feedback. The feedback is provided by variable impedance connected between the input and output terminals of an inverting amplifier, which may be single-ended, or differenti...	02/01/2007
20070001769	ULTRA-WIDEBAND CONSTANT GAIN CMOS AMPLIFIER Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mention...	01/04/2007
20070001768	Broadband low noise amplifier and RF signal amplification method of the same A broadband low noise amplifier and amplification method is provided. The broadband low noise amplifier includes an input terminal into which a radio frequency (RF) signal received by an antenna is input, an output terminal from which an amplified RF signal is output, a...	01/04/2007
20060290430	Receiving amplifier, in particular for television receivers, and use of the receiving amplifier A receiving amplifier includes a semiconductor body with a first node, a second node and an amplifier circuit. The amplifier includes at least one field-effect transistor, a first input, and a second input. A capacitive element is arranged between the inputs of the ampl...	12/28/2006
20060232342	Circuits and methods for implementing transformer-coupled amplifiers at millimeter wave frequencies Circuits and methods are provided for building integrated transformer-coupled amplifiers with on-chip transformers that are designed to resonate or otherwise tune parasitic capacitances to achieve frequency tuning of amplifiers at millimeter wave operating frequencies. ...	10/19/2006
20060055463	Linear transconductance cell with wide tuning range A transconductance cell is disclosed. The transconductance cell may be single-ended or differential. The transconductance cell may include a tunable degeneration circuit. The tunable degeneration circuit may have a plurality of field effect transistors connected in seri...	03/16/2006
20060028268	METHOD AND APPARATUS FOR CALIBRATING CENTER FREQUENCY OF POWER AMPLIFIER A method and an apparatus for calibrating the center frequency of a power amplifier. The apparatus includes a capacitor unit and an inductor unit. The capacitor unit and the inductor unit are connected in parallel so as to control the center frequency of the power ampli...	02/09/2006
20050258904	Methods and apparatus for amplification in a tuner Methods and apparatus for amplifying a tuner input signal are disclosed. One embodiment of the invention is directed to a tuner amplifier system comprising a tuner amplifier input that receives a tuner amplifier input signal and a first amplifier comprising an input and...	11/24/2005
20050248408	Ultra-wideband constant gain CMOS amplifier Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mention...	11/10/2005
20050231290	Multi-band low noise amplifier system A low noise amplifier (LNA) operates over multiple frequency bands while occupying less silicon area than known LNA implementations. The LNA includes output matching that can be tuned by an adjustable inductor together with a tunable capacitor bank. ...	10/20/2005
20050231289	Integrated amplifier, electronic communication unit with integrated amplifier and method for operating the electronic communication unit with an integrated amplifier An integrated amplifier has a resonant circuit with a tuneable center frequency, in which the resonant circuit has at least one coil and at least one varactor for varying a resonant frequency of the resonant circuit. ...	10/20/2005
20050206457	Amplifier system and method An embodiment of the present invention provides an amplifier system, comprising at least one variable impedance matching network, the output of which provides the input to at least one amplifier stage or provides an output of the power amplifier itself, and a bias netwo...	09/22/2005
20050110576	Amplifier An amplifier comprising a field effect transistor, a terminating network comprising inductors connected in series separated by capacitors connected in parallel, a filter and a load, wherein the values of the capacitors and inductors are arranged to present open circuits...	05/26/2005

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Class 330/305 - And tuning means