Open AccessDouble‐layer suspended stripline resonator with high quality factor for base‐station diplexer application
Author(s) -
Xia Lei,
Song Lei,
Wu Bian,
Bo Xiaodong,
Chen Jianzhong
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.0388
Subject(s) - stripline , resonator , diplexer , materials science , q factor , optoelectronics , substrate (aquarium) , helical resonator , strips , resonance (particle physics) , layer (electronics) , optics , electrical engineering , engineering , physics , composite material , oceanography , particle physics , geology
A novel double‐layer suspended stripline (DSSL) resonator with high unloaded quality factor is proposed. The DSSL resonator consists of a thin substrate with metal strips on both sides connected by a metallic via hole suspended in the centre of an air‐filled cavity, which leads to a much higher unloaded quality factor than the conventional single‐layer suspended stripline resonator with an identical resonant frequency. The resonance characteristics of the DSSL resonator are parametric analysed. For demonstration, a compact diplexer for base‐station application with channel centre frequencies at 1.95 and 2.14 GHz and absolute bandwidths of 60 MHz is designed, fabricated and measured. The synthesised, simulated and measured results show a good agreement.