A Novel Compact Spiral Electromagnetic Band-Gap (EBG) Structure

Author

Zheng, Qiu-Rong ; Fu, Yun-Qi ; Yuan, Nai-Chang

Author_Institution

Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha

Volume

56

Issue

6

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1656

Lastpage

1660

Abstract

A novel compact electromagnetic band-gap (EBG) structure in a spiral shape is presented and investigated. This structure significantly enlarges the capacitance between neighboring elements. The simulations and experimental results have proved that the size of the spiral structure is only 30.9% of the conventional EBG structure. Two applications have been shown, including patch antenna with the spiral EBG structure and a double-element microstrip antenna array with low mutual coupling. The measured results show that a gain improvement over 3 dB and a significant reduction of cross polarization in H-plane are obtained. A 6 dB reduction of mutual coupling is achieved in a double-element EBG microstrip antenna array.

Keywords

electromagnetic coupling; electromagnetic wave polarisation; microstrip antenna arrays; photonic band gap; EBG; compact spiral electromagnetic band-gap structure; cross polarization; double-element microstrip antenna array; mutual coupling; patch antenna; Antenna measurements; Capacitance; Metamaterials; Microstrip antenna arrays; Microstrip antennas; Mutual coupling; Patch antennas; Periodic structures; Shape; Spirals; Cross-polarization; electromagnetic band-gap (EBG); patch antenna; radiation pattern; surface wave;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2008.923305

Filename

4538179