Design of Periodic Antenna Arrays With the Excitation Phases Synthesized for Optimum Near-Field Patterns via Steepest Descent Method

Author

Hsi-Tseng Chou ; Kuo-Lung Hung ; Hsi-Hsir Chou

Author_Institution

Dept. of Commun. Eng., Yuan-Ze Univ., Chungli, Taiwan

Volume

59

Issue

11

fYear

2011

Firstpage

4342

Lastpage

4345

Abstract

We present the design and realization of a microstrip patch array antenna, which is operated at 24 GHz band, and can be used in the applications of vital-sign detection with a higher resolution. The design uses the steepest descent method (SDM) to synthesize the excitation phases of the array such that the radiation has an optimum near-field pattern in the desired area. Both theoretical development of SDM formulations and experimental validations over the antenna prototype are presented.

Keywords

antenna phased arrays; antenna radiation patterns; gradient methods; microstrip antenna arrays; microwave antenna arrays; SDM; excitation phase synthesis; frequency 24 GHz; microstrip patch array antenna; optimum near-field radiation pattern; periodic antenna array; steepest descent method; Antenna measurements; Antenna radiation patterns; Aperture antennas; Impedance; Microstrip antenna arrays; Phased arrays; Antenna arrays; near-field focus; pattern synthesis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2164221

Filename

5979183