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Broadband 55-95 GHz microstrip to waveguide transition based on a dielectric tip and a tapered double-ridged waveguide section

Published on 29 March 2018
Broadband 55-95 GHz microstrip to waveguide transition based on a dielectric tip and a tapered double-ridged waveguide section
Description
 
Date 
Authors
Voineau F., Ghiotto A., Kerherve E., Sie M., Martineau B.
Year2017-0464
Source-TitleIEEE MTT-S International Microwave Symposium Digest
Affiliations
STMicroelectronics, Crolles, France, University of Bordeaux, Talence, France, CEA-Leti, Grenoble, France
Abstract
As applications in E-band (60-90 GHz) are gaining increasing commercial interest, a full-band, low-cost and high performance microstrip to rectangular waveguide standard (WR12) transition is desired. The presented design covers a bandwidth from 55 GHz to 95 GHz thanks to smooth impedance transitions. A dielectric tip is machined at the end of the microstrip line to couple with a double ridged waveguide section, which is then linearly tapered to a standard WR12 section. Measurements on back-to-back transitions confirm wideband operation beyond E-band with a 3.6 dB average insertion loss (1.8 dB per transition) and return loss lower than 10 dB in the 55 to 95 GHz frequency range. Additionally, group delay is measured showing broadband operation in line with the simulation. © 2017 IEEE.
Author-Keywords
Microstrip line, Millimeter-wave, Printed circuit board (PCB), Ridged waveguide, Transition, Waveguide
Index-Keywords
Group delay, Microstrip lines, Millimeter waves, Printed circuit boards, Waveguides, Broadband operation, Double-ridged waveguides, GHz frequencies, Printed circuit boards (PCB), Ridged waveguides, Transition, Waveguide transition, Wideband operation, Ridge waveguides
ISSN0149645X
LinkLink

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