A 1.2 v 114 mW dual-band direct-conversion DVB-H tuner in 0.13 μm CMOS

Ming Ching Kuo*, Shiau Wen Kao, Chih Hung Chen, Tsung Shuen Hung, Yi Shing Shih, Tzu Yi Yang, Chien-Nan Kuo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

A fully integrated direct-conversion tuner is implemented in 0.13 μm CMOS technology. A broadband noise-canceling balun LNA with the proposed dual cross-coupling technique helps achieve an overall receiver noise figure from 3.7 to 4.3 dB while consuming only 3.6 mW. The proposed current-mode switching scheme improves the achievable SNIR with a gain step of 15 dB, providing IIP3 improvement of 18 dB and NF degradation of only 6 dB. Moreover, design trade-offs are carefully considered in designing the baseband circuit, which provides wide gain tuning and bandwidth accuracy with a DC offset residual less than 6 mV. The measured maximum SNR values are better than 30 dB over wide input power levels, ensuring robust reception in a mobile environment. All circuit blocks are operated at 1.2 V. As a result, the tuner consumes power as low as 114 mW in the continuous mode. This compact tuner supports both UHF and L- bands, and occupies only 7.2 mm 2 die area.

Original languageEnglish
Article number4787574
Pages (from-to)740-750
Number of pages11
JournalIEEE Journal of Solid-State Circuits
Volume44
Issue number3
DOIs
StatePublished - 1 Mar 2009

Keywords

  • Balun
  • CMOS RF
  • Current-mode switching
  • DVB-H
  • DVB-T
  • Direct-conversion
  • Mobile TV
  • Noise-canceling LNA
  • OFDM
  • Passive mixer
  • Receiver
  • Tuner

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