An integrated frequency synthesizer for 81–86GHz satellite communications in 65nm CMOS

Author

Xu, Zhiwei ; Gu, Qun Jane ; Wu, Yi-Cheng ; Jian, Heng-Yu ; Wang, Frank ; Chang, Mau-Chung Frank

Author_Institution

Univ. of California, Los Angeles, CA, USA

fYear

2010

fDate

23-25 May 2010

Firstpage

57

Lastpage

60

Abstract

We present an integrated frequency synthesizer in 65nm CMOS to enable the 81-86GHz satellite communication transceiver. The frequency synthesizer is inserted in a two-step zero-IF millimeter-wave transceiver with LO_RF at 70-78GHz and LO_IF at 1/8 of LO_RF to cover the desired entire frequency bands. It also features coarse phase rotation to endow beam forming capabilities for the intended communication system. The phase noise is <; -83dBc/Hz at 1MHz offset as extrapolated from measured value at 1/8 of the VCO frequency (~9.4GHz). The measured reference spur is <;-49dBc. Total synthesizer power consumption including LO buffers and phase rotators is 65mW at 1V power supply and the compact layout has rendered small synthesizer core area of 0.16mm².

Keywords

CMOS integrated circuits; array signal processing; frequency synthesizers; millimetre wave receivers; satellite communication; transceivers; voltage-controlled oscillators; CMOS; LOIF; LORF; VCO frequency; beam forming capability; coarse phase rotation; frequency 70 GHz to 78 GHz; frequency 81 GHz to 86 GHz; frequency bands; integrated frequency synthesizer; phase noise; phase rotators; power consumption; reference spur; satellite communication transceiver; satellite communications; size 65 nm; synthesizer core area; zero-IF millimeter-wave transceiver; Frequency measurement; Frequency synthesizers; Millimeter wave communication; Noise measurement; Phase measurement; Phase noise; Radio frequency; Satellite communication; Transceivers; Voltage-controlled oscillators; Frequency Synthesizer; VCO; injection locking divider; millimeterwave transceiver; multi-modulus programmable divider; phase rotation;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE

Conference_Location

Anaheim, CA

ISSN

1529-2517

Print_ISBN

978-1-4244-6240-7

Type

conf

DOI

10.1109/RFIC.2010.5477388

Filename

5477388