A low-power all-digital phase modulator pair for LINC transmitters

Ping Yuan Tsai*, Tsan Wen Chen, Chen-Yi Lee

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper presents a low-power all-digital phase modulator (PM) pair to generate constant-envelope signals for LINC transmitters. To reduce the power overhead, an open-loop delay line based phase shifter with a continuous locking scheme is adopted for the PM design. This design is implemented by 90 nm CMOS technology with active area of 0.1892 mm 2. The PM provides 8-bit resolution with RMS error 0.33 at IF frequency 80 MHz, and the power consumption is only 885 uW with 1.0 V supply voltage. Considering a 64-QAM OFDM system, the EVM of 31.87 dB can be achieved by using the proposed PM pair.

Original languageEnglish
Title of host publicationProceedings - IEEE International SOC Conference, SOCC 2011
Pages48-51
Number of pages4
DOIs
StatePublished - 28 Dec 2011
Event24th IEEE International System on Chip Conference, SOCC 2011 - Taipei, Taiwan
Duration: 26 Sep 201128 Sep 2011

Publication series

NameInternational System on Chip Conference
ISSN (Print)2164-1676
ISSN (Electronic)2164-1706

Conference

Conference24th IEEE International System on Chip Conference, SOCC 2011
CountryTaiwan
CityTaipei
Period26/09/1128/09/11

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