Title :
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
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2011.2164221
