Design and simulation of superdirective adaptive antenna arrays

Author

Dawoud, M.M. ; Abdel-magid, Y.L. ; Ismail, A.N.

Author_Institution

Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia

fYear

1990

fDate

7-11 May 1990

Firstpage

1700

Abstract

A novel technique for the design and implementation of an adaptive superdirective antenna array is presented. With this technique, the characteristics of the adaptive superdirective array can be held almost constant over a wide scan-angle range. These characteristics were made possible by means of both amplitude and phase variations, based on predetermined optimized array polynomials. The commonly used adaptive algorithms were compared and the LMS (least mean square) algorithm was selected for the simulation of the adaptive array system. The system performance was determined for different scan angles. The mean square error between the desired patterns and the simulated patterns after being multiplied by the adaptive weights is shown for a scan-angle of 92 degrees .<>

Keywords

antenna phased arrays; antenna radiation patterns; least squares approximations; LMS algorithm; adaptive algorithms; adaptive gain; adaptive weights; amplitude variations; antenna radiation patterns; array polynomials; design; least mean square; mean square error; phase variations; scan-angle range; simulation; superdirective adaptive antenna arrays; system performance; Adaptive algorithm; Adaptive arrays; Adaptive systems; Antenna arrays; Design optimization; Minerals; Phased arrays; Polynomials; Sensor arrays; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115457

Filename

115457