Adaptive Frequency Sweep Linearization based on Phase Accumulator Principle

Author

Wagner, Christoph ; Stelzer, Andreas ; Jäger, Herbert

Author_Institution

Johannes Kepler Univ., Linz

fYear

2007

fDate

3-8 June 2007

Firstpage

1319

Lastpage

1322

Abstract

A novel approach to in-system monitoring of frequency sweep linearity is presented. Phase error measurement is carried out using a phase accumulator such as known from direct digital synthesizers (DDS). The successful application of this monitoring concept in an adaptive frequency sweep linearization system is shown by measurements of a 77-GHz linear frequency modulated continuous wave (LFMCW) radar transmitter.

Keywords

CW radar; FM radar; adaptive systems; digital-analogue conversion; direct digital synthesis; millimetre wave measurement; millimetre wave oscillators; radar transmitters; voltage-controlled oscillators; DAC; DDS; VCO; adaptive frequency sweep linearization system; direct digital synthesizers; frequency 77 GHz; in-system monitoring; linear frequency modulated continuous wave radar transmitter; phase accumulator principles; phase error measurement; Chirp modulation; Frequency measurement; Frequency modulation; Linearity; Monitoring; Phase measurement; Radar applications; Radar measurements; Synthesizers; Transmitters; 77-GHz; LFMCW radar; frequency sweep linearization;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium, 2007. IEEE/MTT-S International

Conference_Location

Honolulu, HI

ISSN

0149-645X

Print_ISBN

1-4244-0688-9

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2007.380437

Filename

4264076