Title :
Uniplanar bridgeless CPW-to-slotline transition and its application to CPW balun
Author :
Ibrahim, Ahmed A. ; Safwat, Amr M. E. ; El-Hennawy, Hadia
Author_Institution :
Electron. & Commun. Eng. Dept., Ain Shams Univ., Cairo, Egypt
Abstract :
A new coplanar waveguide (CPW)-to-slotline transition that is uniplanar and bridgeless is presented. The transition consists of a CPW cross and CPW stubs in which both the even and odd modes are utilised. Based on this transition a uniplanar bridgeless CPW balun has been designed and fabricated. The fabricated balun has 1 dB insertion loss, 0.8 dB maximum amplitude imbalance, 4° maximum phase imbalance and 56% fractional bandwidth. Measurements are in a good agreement with simulations.
Keywords :
coplanar waveguides; CPW cross; CPW stubs; loss 1 dB; uniplanar bridgeless CPW balun; uniplanar bridgeless CPW-to-slotline transition; uniplanar bridgeless coplanar waveguide-to-slotline transition;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.0202
