Title :
High-directivity compact slow-wave CoPlanar waveguide couplers for millimeter-wave applications
Author :
Lugo-Alvarez, Jose ; Bautista, Alfredo ; Podevin, Florence ; Ferrari, Philippe
Author_Institution :
IMEP-LAHC, Univ. of Grenoble-Alpes, Grenoble, France
Abstract :
A new concept of integrated coupled-lines couplers based on coupled slow-wave CPWs is presented. Design rules are also addressed. Two different couplers are designed for a proof-of-concept, with weak (16 dB) and strong (3 dB) coupling. Great directivity improvement and size area reduction is achieved when compared to microstrip couplers. Moreover, strong coupling of 3 dB can be achieved with realizable geometries, whereas microstrip lines geometries remain incompatible with standard CMOS process.
Keywords :
CMOS integrated circuits; coplanar waveguides; integrated circuit design; microwave integrated circuits; waveguide couplers; CMOS process; compact slow-wave coplanar waveguide couplers; coupled slow-wave CPW; integrated coupled-lines couplers; microstrip lines geometries; millimeterwave applications; Barium; Capacitance; Coplanar waveguides; Couplers; Couplings; Microstrip; Strips; coupled-lines; directional coupler; millimeter waves; slow-wave transmission lines;
Conference_Titel :
Microwave Conference (EuMC), 2014 44th European
Conference_Location :
Rome
DOI :
10.1109/EuMC.2014.6986624
