Title :
A novel compact electromagnetic-bandgap (EBG) structure and its applications for microwave circuits
Author :
Yang, Li ; Fan, Mingyan ; Chen, Fanglu ; She, Jingzhao ; Feng, Zhenghe
Author_Institution :
State Key Lab. on Microwave & Digital Commun., Tsinghua Univ., Beijing, China
Abstract :
A novel electromagnetic-bandgap (EBG) structure in a fork-like shape is investigated. This structure has an extremely compact size. A comparison has been carried out between the new structure and the conventional mushroom-like EBG structure. Simulations and experimental results have verified that the area of the fork-like structure is less than 40% of the latter. The presented structure also provides an additional degree of freedom to adjust the bandgap position, which is applied to design a novel reconfigurable multiband EBG structure. Several application examples have been demonstrated, including a double-element microstrip antenna array with low mutual coupling, notch-type antenna duplexer, and steerable array with a linearly discrete beamsteering of 20° in steps of 10° at 2.468 GHz.
Keywords :
antenna accessories; beam steering; microstrip antenna arrays; microstrip lines; microwave circuits; 2.468 GHz; antenna beamsteering; bandgap position; double element microstrip antenna array; electromagnetic bandgap structure; fork-like structure; linearly discrete beamsteering; microwave circuits; notch-type antenna duplexer; reconfigurable multiband structure; steerable array; Circuit simulation; Linear antenna arrays; Metamaterials; Microstrip antenna arrays; Microstrip antennas; Microwave circuits; Mutual coupling; Periodic structures; Photonic band gap; Shape;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2004.839322
