A highly linear baseband G_m-C filter for WLAN application  

作　　者：杨利君 龚正 石寅 陈治明 

机构地区：[1]Department of Electronic Engineering,Xi'an University of Technology [2]Suzhou-CAS Semiconductors Integrated Technology Research Center

出　　处：《Journal of Semiconductors》2011年第9期112-118,共7页半导体学报（英文版）

摘　　要：A low voltage,highly linear transconductance-C（G_m-C） low-pass filter for wireless local area network （WLAN） transceiver application is proposed.This transmitter（Tx） filter adopts a 9.8 MHz 3rd-order Chebyshev low pass prototype and achieves 35 dB stop-band attenuation at 30 MHz frequency.By utilizing pseudo-differential linear-region MOS transconductors,the filter IIP_3 is measured to be as high as 9.5 dBm.Fabricated in a 0.35μm standard CMOS technology,the proposed filter chip occupies a 0.41×0.17 mm^2 die area and consumes 3.36 mA from a 3.3-V power supply.A low voltage,highly linear transconductance-C（G_m-C） low-pass filter for wireless local area network （WLAN） transceiver application is proposed.This transmitter（Tx） filter adopts a 9.8 MHz 3rd-order Chebyshev low pass prototype and achieves 35 dB stop-band attenuation at 30 MHz frequency.By utilizing pseudo-differential linear-region MOS transconductors,the filter IIP_3 is measured to be as high as 9.5 dBm.Fabricated in a 0.35μm standard CMOS technology,the proposed filter chip occupies a 0.41×0.17 mm^2 die area and consumes 3.36 mA from a 3.3-V power supply.

关 键 词：wireless local area network transconductance-C low-pass filter LINEARITY linear-region MOS transconductors pseudo-differential transconductors 

分 类 号：TN925.93[电子电信—通信与信息系统] TN713[电子电信—信息与通信工程]