WO2008088635A3 - Automatic gain control using multiple equalized estimates and dynamic hysteresis - Google Patents

Automatic gain control using multiple equalized estimates and dynamic hysteresis Download PDF

Info

Publication number
WO2008088635A3
WO2008088635A3 PCT/US2007/087688 US2007087688W WO2008088635A3 WO 2008088635 A3 WO2008088635 A3 WO 2008088635A3 US 2007087688 W US2007087688 W US 2007087688W WO 2008088635 A3 WO2008088635 A3 WO 2008088635A3
Authority
WO
WIPO (PCT)
Prior art keywords
analog
estimates
gain control
automatic gain
gain
Prior art date
Application number
PCT/US2007/087688
Other languages
French (fr)
Other versions
WO2008088635A2 (en
Inventor
Charles Leroy Sobchak
Mahibur Rahman
Lynn R Freytag
Original Assignee
Freescale Semiconductor Inc
Charles Leroy Sobchak
Mahibur Rahman
Lynn R Freytag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Freescale Semiconductor Inc, Charles Leroy Sobchak, Mahibur Rahman, Lynn R Freytag filed Critical Freescale Semiconductor Inc
Publication of WO2008088635A2 publication Critical patent/WO2008088635A2/en
Publication of WO2008088635A3 publication Critical patent/WO2008088635A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/001—Digital control of analog signals

Abstract

At least one adjustable gain analog amplifier (120, 124 and 128) in an analog line-up (102) amplifies by a gain an analog signal at an input of the analog line-up (102). The at least one adjustable gain analog amplifier (120, 124 and 128) is operable at one or more gains. At least one digital estimation device (134, 140 and 146) receives signal via an output (108) of the analog line-up (10) and provides a digital signal estimate representative of an analog signal at an input of a respective one of the at least one adjustable gain analog amplifier (120, 124 and 128) in the analog line-up (102). An AGC controller (152) monitors the digital signal estimate. The AGC controller (152) adjusts the gain of the at least one analog amplifier (120, 124 and 128). An RF receiver and an integrated circuit utilizing the novel features are also disclosed.
PCT/US2007/087688 2007-01-11 2007-12-15 Automatic gain control using multiple equalized estimates and dynamic hysteresis WO2008088635A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66240207A 2007-01-11 2007-01-11
US11/662,402 2007-01-11

Publications (2)

Publication Number Publication Date
WO2008088635A2 WO2008088635A2 (en) 2008-07-24
WO2008088635A3 true WO2008088635A3 (en) 2008-10-02

Family

ID=39636543

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/087688 WO2008088635A2 (en) 2007-01-11 2007-12-15 Automatic gain control using multiple equalized estimates and dynamic hysteresis

Country Status (1)

Country Link
WO (1) WO2008088635A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10608600B2 (en) 2015-12-23 2020-03-31 Analog Devices, Inc Adaptable receiver amplifier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257286A (en) * 1990-11-13 1993-10-26 Level One Communications, Inc. High frequency receive equalizer
US20060019627A1 (en) * 2002-07-16 2006-01-26 Narad Networks, Inc. Adaptive correction of a received signal frequency response tilt
US7113758B2 (en) * 2003-03-06 2006-09-26 Samsung Electronics Co., Ltd. Automatic gain controller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257286A (en) * 1990-11-13 1993-10-26 Level One Communications, Inc. High frequency receive equalizer
US20060019627A1 (en) * 2002-07-16 2006-01-26 Narad Networks, Inc. Adaptive correction of a received signal frequency response tilt
US7113758B2 (en) * 2003-03-06 2006-09-26 Samsung Electronics Co., Ltd. Automatic gain controller

Also Published As

Publication number Publication date
WO2008088635A2 (en) 2008-07-24

Similar Documents

Publication Publication Date Title
WO2008015648A3 (en) Improvements in or relating to automatic gain control of radio devices
WO2007130843A3 (en) Modulation dependent automatic gain control
WO2004054145A3 (en) Signal distribution system cascadable agc device and method
EP0964539A3 (en) Receiver capable of outputting a high quality signal without regard to an input signal level
WO2014100511A3 (en) Independent gain control for multiple receive circuits concurrently processing different transmitted signals
EP2511940A3 (en) Method for operating a plasma supply device and plasma supply device
TW200605494A (en) Column amplifier with automatic gain selection for CMOS image sensors
TW200635211A (en) Automatic gain control analog-to-digital converting system and related method
WO2008002787A3 (en) Dynamic performance control of broadband tuner
UA84130C2 (en) Technique and system for gain control in a communications device (versions)
WO2006071932A3 (en) System for dynamic control of automatic gain control take-over-point and method of operation
WO2007115327A3 (en) Automatic gain control
EP1193862A3 (en) Distortion-compensation amplifier device
WO2008084800A1 (en) Reception device and reception method
CA2363400A1 (en) System and method for inverting automatic gain control (agc) and soft limiting
WO2007140177A3 (en) Agc system and method for broadband tuners
EP1976113A3 (en) Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity
WO2002043253A3 (en) A radio receiver
TWI268657B (en) Variable gain amplifier
EP1667431A4 (en) Signal processing device and signal processing method
TW200509620A (en) Automatic gain control circuit for signal receiving device for moving body, amplifying circuit with an automatic gain control circuit, integrated circuit, and method for automatic gain control of signal receiving device for moving body
EP1936977A3 (en) Amplification control of a broadband amplifier
WO2008088635A3 (en) Automatic gain control using multiple equalized estimates and dynamic hysteresis
EP2020760A3 (en) Method and system for polar modulation with discontinuous phase for RF transmitters with power control
WO2008129885A1 (en) Output control circuit and imaging device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07869327

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07869327

Country of ref document: EP

Kind code of ref document: A2