Open AccessDesign of wideband four‐way filtering power divider based on SIW loaded square patch resonator
Author(s) -
Yang Mengni,
Wang Jianpeng,
Wang Xuedao,
Wu Wen
Publication year - 2019
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.2018.8058
Subject(s) - wideband , resonator , power dividers and directional couplers , insertion loss , return loss , bandwidth (computing) , microstrip , materials science , electronic engineering , fractional bandwidth , square (algebra) , acoustics , engineering , electrical engineering , optoelectronics , telecommunications , physics , antenna (radio) , mathematics , geometry
A new design of wideband four‐way filtering power divider (FPD) based on substrate‐integrated waveguide (SIW) loaded square patch resonator is presented. The wideband operation is realised by utilising the TM 20 mode of the patch and the TE 110 mode of the SIW cavity resonator. Afterwards, the selectivity is obtained by adding four open‐ended coupling lines to each side of the square patch. Besides, an extra isolation network is introduced between each output port. To verify the design concept, a prototype of the proposed FPD operating at 3.55 GHz with a fractional bandwidth of 21.3% is fabricated and measured. Results indicate that the input return loss is >10 dB and the insertion loss is <2 dB. The amplitude and phase imbalances are >0.3 dB and 3°, respectively. Both simulated and measured results are in good agreement.