A fully integrated translational tracking filter with >40dB blocker attenuation and >68dB harmonic rejection in 40nm for Digital TV tuner applications

Kun-Da Chu,Ying-Tsang Lu,Chao-Wei Wang,Chih-Ming Hung,Meng-Chang Lee,Shih-Chieh Yen

CICC（2014）

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摘要

A fully integrated tunable high-quality-factor bandpass translational tracking filter (TTF) for Digital TV tuners is presented. The center frequency and bandwidth of the TTF are determined by LO and capacitor arrays, which are fully tunable. The TTF has multiple signal paths and LO phases to boost the blocker attenuation and harmonic rejection. Without any calibration, the TTF achieves >40dB blocker suppression at >180MHz frequency offsets and >68dB harmonic rejection for all harmonics. Implemented in a 40nm CMOS process, the noise figure and IIP3 of the full tuner are 4 dB and -30 dBm, respectively at the highest gain setting while dissipating 50 mA from a 3.3V supply.

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关键词

CMOS process,Q-factor,digital TV tuner applications,CMOS integrated circuits,tracking filters,feed-forward cancellation,tuner,TLF,multiple signal paths,harmonic rejection,blocker attenuation,size 40 nm,voltage 3.3 V,noise figure,fully integrated tunable high-quality-factor bandpass translational tracking filter,LO phases,translational filter,current 50 mA,tracking filter,capacitor arrays,band-pass filters,digital television,TV

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