Open AccessSIW magic‐T with bandpass response
Author(s) -
Li Peng,
Chu Hui,
Chen Ru Shan
Publication year - 2015
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.2015.0640
Subject(s) - band pass filter , computer science , electronic engineering , physics , electrical engineering , engineering
A novel magic‐T with bandpass filtering response using substrate integrated waveguide (SIW) technology is presented. The basic design concept is based on properly locating the two power‐division ports in a dual‐mode circular SIW cavity, whose field distributions are even or odd symmetric. Not only in‐phase and out‐of‐phase operations can be achieved in the magic‐T, but also filtering responses for the two operations can be obtained. This magic‐T is fabricated in a single‐layer PCB and measured results show that it is centred at 9 GHz with 70 MHz 3 dB bandwidth. Good measured performance of balance for magnitude (±0.35 dB) as well as phase (0°–5°) is also obtained within the passband.