Title :
Wideband two-layer SIW coupler: design and experiment
Author :
Ali, Ahmad ; Aubert, H. ; Fonseca, Nelson ; Coccetti, Fabio
Author_Institution :
LAAS, CNRS, Toulouse
Abstract :
An original wideband two-layer substrate integrated waveguide directional coupler is presented. The structure provides attractive features including a flexible design with a wideband coupling and independent control of the transmission phase for arbitrary coupling levels. Characteristics of 18 dB isolation and 90 phase shift between direct and coupled ports are experimentally validated over 16 bandwidth.
Keywords :
directional couplers; isolation technology; substrate integrated waveguides; arbitrary coupling level; flexible design; isolation characteristics; substrate integrated waveguide; transmission phase; wideband two-layer SIW coupler;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.0464
