All-digital out-phasing modulator for a software-defined transmitter

Author

Heidari, Mohammad E. ; Lee, Minjae ; Abidi, Asad A.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA

fYear

2008

fDate

18-20 June 2008

Firstpage

98

Lastpage

99

Abstract

An all-digital out-phasing transmitter suitable for software-defined radio (SDR) is presented. It uses a phase-locked loop followed by two digital phase rotator blocks embedded in two delay-locked loops. The chip is fabricated in a 90 nm CMOS process with total active area of 3 mm², and tested for GSM and WCDMA standards. The whole transmitter excluding phase-to-digital converter (PDC) consumes 55 mA, and current consumption of the PDC is 70 mA.

Keywords

CMOS digital integrated circuits; broadband networks; cellular radio; code division multiple access; modulators; radio transmitters; software radio; GSM; WCDMA standards; all-digital out-phasing modulator; current consumption; delay-locked loops; digital phase rotator blocks; phase-locked loop; phase-to-digital converter; software-defined radio; software-defined transmitter; Amplitude modulation; Bandwidth; Filters; GSM; Multiaccess communication; Phase locked loops; Phase modulation; Radio frequency; Radio transmitters; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 2008 IEEE Symposium on

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-1804-6

Electronic_ISBN

978-1-4244-1805-3

Type

conf

DOI

10.1109/VLSIC.2008.4585967

Filename

4585967