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7583943 |
Automatic gain control device
An automatic gain control device capable of reducing signal saturation or signal distortion caused by out-of-band signals of a filter or delay of a control signal. An AGC response control section...
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7522894 |
Radio receiving apparatus
A radio receiving apparatus includes two receiving antennas, two upstream RF amplifiers, a SAW filter having two input IDTs and an output IDT, a downstream RF amplifier, and a detector circuit. The...
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7245894 |
Radio receiver and radio signal processing method with controlling gain
A radio receiver comprises a first amplifier to amplify a received radio signal; a quadrature demodulator to demodulate the radio signal amplified by said first amplifier and thereby generate a...
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7200372 |
Reduction of dynamic DC offsets in a wireless receiver
A gain control system in a Direct Conversion Receiver or similar receiver, includes an automatic gain control circuit which determines whether a low noise amplifier, which amplifies signals from an...
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7082291 |
Automatic gain control
A method for controlling gain of an amplifier includes amplifying one or more received signals to produce one or more amplified signals. The method also includes generating a plurality of down...
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6963733 |
Method and apparatus for reducing the effect of AGC switching transients
The present invention reduces automatic gain control (AGC) transients using first and second AGC processing branches to receive a signal. A gain is selectively adjusted (if desired) in the one of...
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6853837 |
CDMA receiver and DCMA demodulator with AGC circuit
A CDMA demodulator is disclosed, which comprises an AGC loop ( 13 to 20 ) including a IF signal converter ( 12 ) for converting a spread spectrum signal to an IF signal and an AGC amplifier ( 13...
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6546237 |
Differential FM detector for radio receivers
A differential FM detection of signals uses in-phase and quadrature phase signal components of a received signal in the detection process, wherein the in-phase and quadrature phase signal...
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6366765 |
Receiver
The present invention intends to provide a receiver which receives a signal by switching a plurality of communication systems, wherein a circuit scale is reduced to intend to the miniaturization of...
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6169887 |
Range extension within a communication system
Receivers (201, 202) within a base station (101) receive a transmission from a remote unit (114). The received signal is delayed a first amount by first delay circuitry (203), and a second amount...
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6151481 |
Combiner with phase and delay correction
A combining technique for coherently combining signals transmitted from a moving satellite that are received by separate antennas. The combining technique corrects for differential delays that are...
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6101376 |
Squelch circuit and methodology for a multi-level quantizer
An improved squelch circuit and methodology for a multi-level quantizer employing one or more amplifiers to amplify an input signal at different gains. Comparators coupled to corresponding...
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5999802 |
Direct conversion tuner
A direct conversion tuner for tuning either analog or digital television signals includes a first and second channels, each having first and second mixers and an intervening filter stage, coupled...
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5305109 |
Parallel untuned video if amplifiers supplied signals from TV 1st detector via respective input filters
In TV receiving apparatus, a first IF amplifier chain comprises a first gain-controlled amplifier followed in cascade connection by a second gain-controlled amplifier, and a second IF amplifier...
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5203016 |
Signal quality-dependent adaptive recursive integrator
The gain of a recursive integrator is controlled so as to be adaptive to the quality of a received signal by comparing the magnitude of its emphasized information component with a reference voltage...
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4827511 |
Automatic gain control circuit for controlling gain of video signal in television receiver
An intermediate-frequency automatic gain control circuit generates an IFAGC voltage for controlling the gain of an IF amplifier, in accordance with the level of the output signal of the IF...
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4811423 |
SSB receiver with improved feedforward AGC
SSB receivers which use feedback and feedforward automatic gain control (AGC) are subject to bursts of noise in the audio output due to the action of the feedforward AGC when signals having low...
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4411019 |
AGC System for television receivers
An AGC system is described for setting a plurality of different AGC delay points for various channels or bands of channels in a television receiver. In one embodiment, the system includes an AGC...
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4393513 |
Input signal level control device for receiver
An input signal level control device for a receiver particularly adapted for use in a mobile FM receiver in which the received electric field strength changes abruptly and greatly. An attenuating...
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3714586 |
MODEM CARRIER DETECTING CIRCUIT
A modem circuit for distinguishing a frequency shift modulation carrier from noise of a comparable amplitude for use in immediately inhibiting the erroneous response of a data terminal to noise...
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3548315 |
COMPENSATED VHF-UHF AUTOMATIC GAIN CONTROL DELAY SYSTEM
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3165699 |
Automatic gain control system for suppressed carrier single sideband radio receivers
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2838660 |
Automatic gain control systems
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2809287 |
Dual delay automatic gain control circuit
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