Mirror Image Sawtooth Phase Conjugator Circuit for Retrodirective Antenna Applications

Author

Buchanan, Neil ; Fusco, Vincent

Author_Institution

Queen´´s Univ. Belfast, Belfast

Volume

6

fYear

2007

fDate

6/29/1905 12:00:00 AM

Firstpage

503

Lastpage

505

Abstract

A new type of phase conjugating circuit which uses the properties of a linear sawtooth wave and an inverting sample and hold (S&H) circuit in order to produce a phase conjugated output signal is reported. Since the circuit performs phase conjugate action at a low frequency the need for circuit components operating at twice the incoming RF frequency, a requisite for all previous single mixer based circuit solutions is removed. The circuit has been experimentally verified for operation at 960 MHz. Phase conjugation errors of better than plusmn15deg, less than the plusmn24deg needed for unimpaired 4-element retrodirective array operation, were obtained from the configuration.

Keywords

UHF antennas; antenna arrays; directive antennas; sample and hold circuits; frequency 960 MHz; mirror image sawtooth phase conjugator circuit; retrodirective antenna array application; sample and hold circuit; Antenna arrays; Circuits; Directive antennas; Frequency conversion; Mirrors; Mixers; Phase locked loops; Phased arrays; RF signals; Radio frequency; Phase conjugation; Phase locked loop; Retrodirective antenna array; phase locked loop (PLL); retrodirective antenna array;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2007.904722

Filename

4357947