Design of a wideband low power FMCW synthesizer in 65 nm CMOS for radar applications

Author

Supeng Liu ; Yuanjin Zheng ; Xiaofeng He

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2014

fDate

1-5 June 2014

Firstpage

1776

Lastpage

1779

Abstract

The paper presents a design of a low power wide output bandwidth FMCW frequency synthesizer for radar applications. The proposed FMCW frequency synthesizer adopts digital phase locked loop approach and has been implemented in 65 nm CMOS technology. A phase domain model is proposed for analyzing the digital phase locked loop architecture. The FMCW synthesizer is able to generate triangularly modulated continuous wave of 3GHz output bandwidth in X band with linearity error less than 1.4×10^-4. It consumes only 7 mA under 1.2 V power supply. The measured phase noise is -105dBc/Hz at 1MHz offset with a centre frequency of 10 GHz.

Keywords

CMOS integrated circuits; CW radar; FM radar; CMOS technology; X band; digital phase locked loop approach; phase domain model; radar applications; triangularly modulated continuous wave; wideband low power FMCW synthesizer; Bandwidth; Frequency measurement; Frequency synthesizers; Phase locked loops; Phase noise; Synthesizers; Voltage-controlled oscillators; FMCW; X band radar; frequency synthesizer; phase locked loop;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2014 IEEE International Symposium on

Conference_Location

Melbourne VIC

Print_ISBN

978-1-4799-3431-7

Type

conf

DOI

10.1109/ISCAS.2014.6865500

Filename

6865500