Title :
Design of a Multifrequency One-Quarter-Rings Microstrip Antenna
Author :
Jianbin Zhang ; Yuanxin Li ; Zhixi Liang ; Shaoyong Zheng ; Yunliang Long
Author_Institution :
Dept. of Electron. & Commun. Eng., Sun Yat-sen Univ., Guangzhou, China
Abstract :
A novel multifrequency one-quarter-rings microstrip antenna is presented in this letter. The proposed antenna consists of two one-quarter rings in different sizes, with an inverted T-shaped slot loaded. The T-shaped slot is used to suppress the higher-order mode. The relationship of the resonant frequency f with different physical size parameters for the single one-quarter-ring microstrip antenna is also reported, and it contributes to the antenna design. The resonant frequencies of the multifrequency antenna are determined by the size of the one-quarter rings. The experimental results show that the proposed antenna operates at 0.9, 1.4, 1.8, and 2.4 GHz, respectively. The radiation patterns at different resonant frequencies are similar.
Keywords :
UHF antennas; microstrip antennas; multifrequency antennas; slot antennas; antenna radiation pattern; frequency 0.9 GHz; frequency 1.4 GHz; frequency 1.8 GHz; frequency 2.4 GHz; higher-order suppression mode; inverted T-shaped slot loading; multifrequency one-quarter-ring microstrip antenna; physical size parameter; single one-quarter-ring microstrip antenna; Antenna measurements; Antenna radiation patterns; Microstrip; Microstrip antennas; Resonant frequency; Microstrip antenna; T-shaped slot; multifrequency; one-quarter ring;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2360412
