Transmit–Receive Isolation Improvement of Antenna Arrays by Using EBG Structures

Autor:	S. L. Chai, Lei Qiu, Jun-Jie Mao, Ke Xiao, Fei Zhao
Rok vydání:	2012
Předmět:	Materials science Wave propagation business.industry Metamaterial Choke Inductor law.invention law Optoelectronics Isolation (database systems) Electrical and Electronic Engineering Antenna (radio) Radar business Photonic crystal
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 11:93-96
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2012.2183847
Popis:	The mushroom-like electromagnetic band-gap (EBG) structure combined with a choke structure is applied to improve the transmit-receive (T/R) isolation of two X-band large antenna arrays. The basic idea presented is to suppress the surface wave propagation between the T/R arrays by utilizing EBG walls formed through a vertical configuration of the EBG cells, so as to improve the T/R isolation. The isolation level of the arrays with the EBG walls and a metal choke is measured and compared to other isolation methods applied. The experimental results show that by using this combined structure, the isolation level can be improved by at least 30 dB in the radar's operation band, which shows its high efficiency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9729427ad867af7defc3e7018cf4d8ff https://doi.org/10.1109/lawp.2012.2183847 Zobrazit plný text záznamu