TW200611508A - Automatic gain control for a wlan system - Google Patents

Automatic gain control for a wlan system

Info

Publication number
TW200611508A
TW200611508A TW093128582A TW93128582A TW200611508A TW 200611508 A TW200611508 A TW 200611508A TW 093128582 A TW093128582 A TW 093128582A TW 93128582 A TW93128582 A TW 93128582A TW 200611508 A TW200611508 A TW 200611508A
Authority
TW
Taiwan
Prior art keywords
gain
vga
power
tune
gain control
Prior art date
Application number
TW093128582A
Other languages
Chinese (zh)
Inventor
Chh-Chia Wang
Kai-Pon Kao
Original Assignee
Via Tech Inc
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 Via Tech Inc filed Critical Via Tech Inc
Priority to TW093128582A priority Critical patent/TW200611508A/en
Publication of TW200611508A publication Critical patent/TW200611508A/en

Links

Abstract

An automatic gain control (AGC) method and system thereof. The power of a detected signal is first checked to ensure that it is large enough for AGC process. A power average of the detected signal is computed and compared to a first threshold in order to determine whether to proceed with a coarse tune procedure or enter a fine tune procedure. Both low noise amplifier (LNA) gain and variable gain amplifier (VGA) gain are tuned during coarse tune, whereas only the VGA gain is tuned during fine tune. The LNA and VGA gains are tuned to predetermined values during coarse tune, and the VGA gain is adjusted according to a difference between a computed average of power and a second threshold.
TW093128582A 2004-09-21 2004-09-21 Automatic gain control for a wlan system TW200611508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW093128582A TW200611508A (en) 2004-09-21 2004-09-21 Automatic gain control for a wlan system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW093128582A TW200611508A (en) 2004-09-21 2004-09-21 Automatic gain control for a wlan system

Publications (1)

Publication Number Publication Date
TW200611508A true TW200611508A (en) 2006-04-01

Family

ID=57807668

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093128582A TW200611508A (en) 2004-09-21 2004-09-21 Automatic gain control for a wlan system

Country Status (1)

Country Link
TW (1) TW200611508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8937873B2 (en) 2010-02-22 2015-01-20 Mediatek Inc. Method and apparatus for generating forbidden channel list

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8937873B2 (en) 2010-02-22 2015-01-20 Mediatek Inc. Method and apparatus for generating forbidden channel list

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