Open AccessA 2.4/3.5/5.2/5.8‐GHz quad‐band BPF using SLRs and triangular loop resonators
Author(s) -
Wang Jinchen,
He Songbai,
Gan Decheng
Publication year - 2018
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.2017.4429
Subject(s) - resonator , loop (graph theory) , optoelectronics , electronic engineering , materials science , multi band device , electrical engineering , physics , telecommunications , acoustics , computer science , engineering , mathematics , combinatorics , antenna (radio)
A modified triangular loop resonator with an open‐circuited stepped‐impedance stub, which can generate two closely spaced passbands at 5.2 and 5.8 GHz, is analysed. For verification, the triangular loop resonators along with stub‐loaded resonators (SLRs) are then employed to design a compact 2.4/3.5/5.2/5.8‐GHz quad‐band bandpass filter (BPF) for wireless local area networks as well as worldwide interoperability for microwave access applications. Each of the four centre frequencies in the proposed quad‐band BPF is able to be controlled due to the design freedom.