Duplexer using microwave photonic band gap structure | Zendy

Sang Soon Oh | Zendy; ChulSik Kee | Zendy; Jae-Eun Kim | Zendy; Hae Yong Park | Zendy; Taeil Kim | Zendy; Ikmo Park | Zendy; H. Lim | Zendy

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Duplexer using microwave photonic band gap structure

Author(s) -

Sang Soon Oh,

ChulSik Kee,

Jae-Eun Kim,

Hae Yong Park,

Taeil Kim,

Ikmo Park,

H. Lim

Publication year - 2000

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.126326

Subject(s) - duplexer , photonic crystal , microwave , reflection (computer programming) , interference (communication) , electromagnetic radiation , band gap , optoelectronics , microwave transmission , optics , materials science , transmission (telecommunications) , physics , telecommunications , computer science , channel (broadcasting) , quantum mechanics , antenna (radio) , programming language

We propose a frequency selective duplexer using microwave photonic band gap (PBG) structures. It uses two different PBGs to control the propagation of electromagnetic waves in the microwave region. In this structure, an additional narrow reflection band appears in the transmission spectrum when the PBG structure is not properly located relative to the T junction. By considering multiple reflections, it is proved that this additional reflection band in each PBG structure results from the interference between the input wave and the reflected wave from the other PBG structure. An effective way to prevent this interference effect is also discussed.

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