Open AccessWideband microstrip rat‐race hybrid with via‐swap phase inverter
Author(s) -
Mung S.W.Y.,
Chan W.S.
Publication year - 2014
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.2013.3234
Subject(s) - inverter , microstrip , bandwidth (computing) , wideband , electronic engineering , computer science , electrical engineering , engineering , telecommunications , voltage
A via‐swap 180° phase inverter on the slotted ground is presented. The phase inverter with a 90° line replaces the conventional 270° line built into the microstrip rat‐race hybrid. This results in a size reduction and the widening of the bandwidth. The experiments show that the proposed hybrid has a good performance from 1.5 to 2.5 GHz ( f o = 2 GHz). The bandwidth is increased from 10 to 50% and a 43% size reduction is obtained compared with the conventional rat‐race hybrid.