Title :
RWG Method Based Design of Minkowski Fractal Loop Yagi Antenna
Author :
Zhen, Tu ; Guangqiu, Zhang ; Feng, Xing ; Dongfang, Zhou
Author_Institution :
PLA Inf. Eng. Univ., Zhengzhou
Abstract :
Fractal shape is a structure that has been formed by broken curve. Its application in antenna theory is in design of small antenna, multi-band antenna and fractal array antenna. This paper presents the design of Minkowski loop Yagi antenna based on Matlab simulation at 880-960 MHz band. Minkowski loop is introduced into the antenna structure intended to reduce the antenna size. Rao-Wilton-Glisson (RWG) basis functions and delta-gap feed model are used to create a system of moment equations in Matlab simulation. The designed antenna has good return loss at the whole band. And the antenna gain is between 10 dBi and 11.2 dBi. Compared to square loop Yagi antenna which works at the same band, its size is reduced 34.5%.
Keywords :
UHF antennas; Yagi antenna arrays; antenna feeds; antenna theory; fractal antennas; loop antennas; multifrequency antennas; Matlab simulation; Minkowski fractal loop Yagi array antenna design; RWG method; Rao-Wilton-Glisson basis function; antenna gain; delta-gap feed model; frequency 880 MHz to 960 MHz; gain 10 dB to 11.2 dB; moment equation; multiband antenna; return loss; small-antenna structure; Antenna feeds; Antenna theory; Design methodology; Fractals; Integral equations; Mathematical model; Programmable logic arrays; Shape; Wire; Yagi-Uda antennas; Matlab; Minkowski antenna; RWG; Yagi antenna; factal;
Conference_Titel :
Microwave Conference, 2008 China-Japan Joint
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3821-1
DOI :
10.1109/CJMW.2008.4772420
