An ultra-wideband channel-select filter with equalized pass-band characteristics has been implemented with a 0.13 um CMOS technology. A discrete-time charge-domain IIR band-pass filter is used to compensate degradation of the 3rd-order continuous-time LC-LPF and the sinc response of the 1st-order charge-domain LPF, thus significantly equalizing the total filter response through clock signals. Measurements show that the IIR BPF reshapes the pass-band, allowing a 3-dB bandwidth of 500 MHz with a notch at 1 GHz. The total filter, including 3rd-order LC-LPF, 1st-order sinc LPF, 1st-order IIR BPF, and clock generator, dissipates 18.8 mW from a 1.2-V supply voltage.
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机译:具有均等化通带特性的超宽带通道选择过滤器已采用0.13 um CMOS技术实现。采用离散时间电荷域IIR带通滤波器来补偿第三顺序连续时间LC-LPF的劣化和第一阶电荷域LPF的SINC响应,从而显着均衡通过总滤波器响应时钟信号。测量结果表明,IIR BPF重新插入通带,允许300 MHz的3dB带宽,在1 GHz处具有凹口。总滤波器,包括3rd阶LC-LPF,1阶SIND LPF,第1阶IIR BPF和时钟发生器,从1.2V电源电压耗散18.8兆瓦。
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