A new beam-scanning technique by controlling the coupling angle in a coupled oscillator array

Author

Hwang, Jae-Ho ; Myung, Noh-Hoon

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

8

Issue

5

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

191

Lastpage

193

Abstract

The authors present a new technique for electronic beam scanning of a coupled oscillator array. A constant phase progression in a coupled oscillator array is achieved by controlling the coupling phase of the outermost coupling circuits only, while that of the innermost coupling circuits is zero and all free-running frequencies of the oscillators are the same. Analytical solution of nonlinear phase dynamic equations changes periodically as a piecewise-linear function of coupling phase only. The theory developed here is verified using a four-element oscillator array operating at 6.16 GHz. The full scan range is measured to be -17° to 18° off broadside. This scan range is very close to the theoretically achievable scan range of -19.2° to 19.2° for this array

Keywords

MESFET circuits; arrays; coupled circuits; microstrip circuits; microwave oscillators; 6.16 GHz; beam-scanning technique; constant phase progression; coupled oscillator array; coupling angle control; coupling phase control; four-element oscillator array; nonlinear phase dynamic equations; piecewise-linear function; Coupling circuits; Frequency; Microstrip; Microwave oscillators; Millimeter wave measurements; Nearest neighbor searches; Nonlinear equations; Optical coupling; Phased arrays; Piecewise linear techniques;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.668707

Filename

668707