Design of a simple transition from microstrip to ridge gap waveguide suited for MMIC and antenna integration
Artikel i vetenskaplig tidskrift, 2013

This letter describes a simple and low-loss microstrip-to-ridge gap waveguide transition with a very compact geometry. The transition transforms the electromagnetic (EM) fields from the microstrip mode to the air-filled ridge gap waveguide mode. This is achievable if the height of the air gap in the ridge gap waveguide is kept almost equal to the thickness of the substrate of the microstrip line. The transition has a pressure contact between the ridge and the microstrip line, so it works without soldering. This is advantageous in systems that require mechanically separable split-blocks or modules and need a lot of transitions. Experimental results of the manufactured back-to-back transition show an insertion loss of 0.32 dB and a return loss of 14.15 dB over 55% relative bandwidth in Ka-band.

microstrip transition

ridge gap waveguide

Antenna array

monolithic microwave integrated circuit (MMIC) integration


Ashraf Uz Zaman

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Tin Vukusic

R and D Unit

Mats Alexanderson

R and D Unit

Per-Simon Kildal

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

IEEE Antennas and Wireless Propagation Letters

1536-1225 (ISSN) 15485757 (eISSN)

Vol. 12 1558 - 1561 6678555


Informations- och kommunikationsteknik


Elektroteknik och elektronik



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