Experimental Demonstration and Characterization of a Tunable CRLH Delay Line System for Impulse/Continuous Wave

Author

Abielmona, Samer ; Gupta, Shulabh ; Caloz, Christophe

Author_Institution

Ecole Poly-Tech. de Montreal, Montreal

Volume

17

Issue

12

fYear

2007

Firstpage

864

Lastpage

866

Abstract

A new tunable delay system is presented and demonstrated experimentally in this letter. This system, which incorporates a composite right/left-handed (CRLH) transmission line, two mixers, and a low-pass filter, achieves a tunable group delay for impulse and continuous-wave signals, controlled by a local oscillator. This group delay tunability follows from the dispersion property of the CRLH transmission line and is achieved without suffering from the drawbacks of conventional delay lines in terms of matching, frequency of operation, and planar circuit implementation. The realized prototype exhibits measured group delays tunable between 5.1 and 8.54 ns over a frequency range of 2-4.5 GHz.

Keywords

circuit tuning; delay circuits; delay lines; low-pass filters; transmission lines; composite right-left-handed transmission line; continuous-wave signals; frequency 2 GHz to 4.5 GHz; impulse signal; low-pass filter; time 5.1 ns to 8.54 ns; tunable CRLH delay line system; tunable delay system; Control systems; Delay lines; Delay systems; Distributed parameter circuits; Frequency; Local oscillators; Low pass filters; Planar transmission lines; Transmission lines; Tunable circuits and devices; Composite right/left-handed (CRLH); continuous wave (CW); delay line; group delay; impulse; tunable;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2007.910492

Filename

4385730