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

Author

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

Author_Institution

MediaTek Inc., Hsinchu, Taiwan

fYear

2014

fDate

15-17 Sept. 2014

Firstpage

1

Lastpage

4

Abstract

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.

Keywords

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

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the

Conference_Location

San Jose, CA

Type

conf

DOI

10.1109/CICC.2014.6946122

Filename

6946122