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A 1.25 GHz Q-enhanced filter with image rejection

机译:具有镜像抑制功能的1.25 GHz Q增强滤波器

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摘要

A 1.25 GHz two-stage band-pass filter fabricated in TSMC 90 nm CMOS process is presented. The Q-compensate technique is used for better filtering performance, and a notch circuit is added to achieve the desired image rejection of 40 dB. Measured gain of this filter is 16.3 dB at 1.25 GHz with the pass band width of 20 MHz. The out-of-band suppression at 100 MHz offset and image rejection at 1.1 GHz are 26 dB and 42 dB, respectively. The power consumption is 22mA from a 1.2 V supply.
机译:提出了采用TSMC 90 nm CMOS工艺制造的1.25 GHz两级带通滤波器。 Q补偿技术用于获得更好的滤波性能,并添加了陷波电路以实现所需的40 dB镜像抑制。该滤波器在1.25 GHz处测得的增益为16.3 dB,通带宽度为20 MHz。 100 MHz偏移下的带外抑制和1.1 GHz下的镜像抑制分别为26 dB和42 dB。 1.2 V电源的功耗为22mA。

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