Title :
A broadband, high directivity 3 dB coupler using coplanar waveguide technology
Author :
Rius, Eric ; Le Gouguec, Thierry ; Hettak, Khelifa ; Coupez, J.P. ; Toutain, S.
Author_Institution :
CNRS, Brest, France
Abstract :
We propose to design high directivity, high level couplers using coplanar waveguide technology. This allows geometrical parameters to be chosen to design 3 dB couplers while limiting the difference between the phase velocities of the normal modes in order to obtain higher directivity. A 40% bandwidth, 30 dB directivity 3 dB coupler is achieved.<>
Keywords :
coplanar waveguides; microstrip directional couplers; 40% bandwidth; broadband microstrip coupler; coplanar waveguide technology; geometrical parameters; high directivity 3 dB coupler; normal mode phase velocity; Arm; Bandwidth; Coplanar transmission lines; Coplanar waveguides; Couplings; Dielectric constant; Impedance; Isolation technology; Microstrip; Transmission line theory;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406018
