Miniaturised double‐coaxial cavity resonator and duplexer with ZOR characteristic using air‐core coils | Zendy

Kim K.S. | Zendy; Kim C.Y. | Zendy; Kim D.O. | Zendy; Park J.G. | Zendy; Koo B.H. | Zendy; Lee C.H. | Zendy

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Miniaturised double‐coaxial cavity resonator and duplexer with ZOR characteristic using air‐core coils

Author(s) -

Kim K.S.,

Kim C.Y.,

Kim D.O.,

Park J.G.,

Koo B.H.,

Lee C.H.

Publication year - 2013

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

ISSN - 1350-911X

DOI - 10.1049/el.2013.2151

Subject(s) - duplexer , resonator , coaxial , miniaturization , materials science , helical resonator , q factor , core (optical fiber) , resonance (particle physics) , acoustics , electrical engineering , electronic engineering , optoelectronics , engineering , physics , antenna (radio) , composite material , particle physics

A novel method of miniaturising the size of a coaxial cavity resonator by utilising zeroth‐order resonance (ZOR) characteristics is presented. This miniaturisation has been achieved through the introduction of air‐core coils inside a conventional coaxial cavity resonator. This structure possesses ZOR characteristics, which results in the miniaturisation of the resonator while still exhibiting a reasonable high unloaded Q factor. A duplexer was designed and fabricated using the proposed resonator. The measurement results verified that a 30% reduction in size was achieved compared with a traditional duplexer.

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