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: Department of Electronic Engineering,Xi'an University of Technology,Suzhou-CAS Semiconductors Integr
• 出 处: 半导体学报
• 发表日期: 2011年09期
• 关键词: transmitter Chebyshev transceiver utilizing prototype tuning attenuation render

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 requires 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 as high as 9.5 dBm. Fabricated in 0.35 μm 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.