Title :
A novel method to improve the performance of microstrip antenna arrays using a dumbbell EBG structure
Author :
Yu, Ang ; Zhang, Xuexia
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fDate :
6/25/1905 12:00:00 AM
Abstract :
A double element microstrip antenna array inserted with a newly developed electromagnetic band gap (EBG) structure has been investigated, showing that the S21 transmission coefficient between the elements is reduced by around 4 dB. As a result, sidelobe levels are reduced by 1.8 to 2.1 dB and an increase of 1 dB in the gain has been achieved, without much change in other characteristics. Using the EBG structure has proved to be a convenient way to upgrade the performance of an antenna array.
Keywords :
antenna accessories; antenna radiation patterns; electromagnetic coupling; microstrip antenna arrays; photonic band gap; dumbbell EBG structure; electromagnetic band gap structure; microstrip antenna arrays; mutual coupling reduction; radiation pattern; sidelobe levels; transmission coefficient; Antenna arrays; Feeds; Finite difference methods; Frequency; Gain; Metamaterials; Microstrip antenna arrays; Microstrip antennas; Periodic structures; Transmitting antennas;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2003.814773
