Open AccessDesign and implementation of microstrip dual‐band filtering power divider using square‐loop resonator
Author(s) -
Mirzaei M.,
Sheikhi A.
Publication year - 2020
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.2019.3050
Subject(s) - resonator , power dividers and directional couplers , multi band device , microstrip , return loss , wilkinson power divider , insertion loss , loop (graph theory) , square (algebra) , materials science , electronic circuit , electronic engineering , physics , optoelectronics , electrical engineering , optics , frequency divider , engineering , mathematics , geometry , combinatorics , antenna (radio)
This Letter presents a dual‐band filtering power divider (FPD) by employing square‐loop resonator loaded by open stubs. The even‐ and odd‐mode equivalent circuits of the proposed resonator are analysed and design equations are derived. For demonstration, the power divider (PD) is fabricated and measured. The simulated results of the PD not only show a good selectivity but also it does good isolation. Finally, the comparisons of the measured and simulated results of the dual‐band FPD are presented, which are in good agreement. The measured results show that the dual‐band FPD has better than −30/−36 dB isolation, −16.5/−18 dB return loss, and −3.9/−4.0 dB insertion loss at centre frequencies of 3.1 and 5.3 GHz, respectively.