A Novel LFMCW Scheme of the Real-Time Tracking the DDS by the PLL

Author

Dong, Fang-Chi ; Tang, Xiao-Hong ; Wu, Tao

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

fYear

2007

fDate

16-17 Aug. 2007

Firstpage

450

Lastpage

453

Abstract

In this paper, two schemes of traditional linear frequency modulated continuous wave (LFMCW) source are analyzed. Based on the analysis, a novel LFMCW scheme of the real-time tracking the direct digital frequency synthesis (DDS) by the phase locked loop (PLL) is proposed. The frequency of the LFMCW source´s output signal ranges from 1.5 GHz to 1.8 GHz. Compared with traditional schemes, the new scheme is characterized by the following features: high linearity, high stability, immune to environmental influence, good spur suppression and low phase noise, etc.

Keywords

CW radar; FM radar; direct digital synthesis; phase locked loops; radar tracking; DDS; LFMCW scheme; PLL; direct digital frequency synthesis; frequency 1.5 GHz to 1.8 GHz; linear frequency modulated continuous wave; phase locked loop; real-time tracking; Chirp modulation; Frequency modulation; Linearity; Microwave technology; Phase locked loops; Radar tracking; Tuning; Voltage control; Voltage-controlled oscillators; Working environment noise; DDS; LFMCW; PLL; Real-time tracking High linearity;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on

Conference_Location

Hangzhou

Print_ISBN

978-1-4244-1045-3

Electronic_ISBN

978-1-4244-1045-3

Type

conf

DOI

10.1109/MAPE.2007.4393648

Filename

4393648