Title :
Presenting a Method for Wide Band Nulling by Spiral Array Antenna
Author :
Jafargholi, Amir ; Mousavi, Mohammad Reza
Author_Institution :
Dep. of Electr. Eng., K. N. Toosi Univ. of Technol., Tehran
Abstract :
Spiral phased array antenna nulling is presented. The array factor and classic method for spiral array antenna proposed here. Proposed method and genetic algorithm for optimization of fixed nulling in spiral array antenna are used and compared. The goal is to achieve a -20 dB in null over the wide frequency band. Our simulation shows -20 dB over 75 MHz null bandwidth, in VHF band by GA and over 90 MHz null bandwidth by proposed design method.
Keywords :
VHF antennas; antenna phased arrays; broadband antennas; genetic algorithms; spiral antennas; VHF band; antenna nulling; array factor; genetic algorithm; spiral phased array antenna; wideband antennas; Antenna arrays; Bandwidth; Broadband antennas; Design methodology; Equations; Frequency; Genetic algorithms; Optimization methods; Phased arrays; Spirals;
Conference_Titel :
Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on
Conference_Location :
Guilin
Print_ISBN :
1-4244-0162-3
Electronic_ISBN :
1-4244-0163-1
DOI :
10.1109/ISAPE.2006.353477
