A compact diplexer for circularly polarized 20/30 GHz SIW-Antennas

Publikationstyp
Conference Paper
Date Issued
2020-08
Sprache
English
Author(s)
Sieganschin, Anton  orcid-logo
Jaschke, Thomas  orcid-logo
Jacob, Arne  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/7780
Journal
IEEE MTT-S International Microwave Symposium digest  
Volume
2020-August
Start Page
599
End Page
602
Article Number
9223900
Citation
IEEE MTT-S International Microwave Symposium: 9223900 (2020-08)
Contribution to Conference
IEEE MTT-S International Microwave Symposium, 2020  
Publisher DOI
10.1109/IMS30576.2020.9223900
Scopus ID
2-s2.0-85094189412
This contribution deals with a 20/30 GHz diplexer intended to feed substrate integrated waveguide (SIW) antennas. As these feature circular polarization, they have a square cross section which is implemented in a thick multilayer. The transition between the thick antenna and the thin front end is part of the proposed diplexer. Realizing it as a step yields a low-loss and very compact component occupying approximately 5 × 8 mm2. The paper describes the structure and reports its design and realization. The functionality is demonstrated in simulation and verified experimentally. The measured insertion loss is 1 dB in the 20 GHz receive (Rx) path and 1.6 dB in the 30 GHz transmit (Tx) one. The port isolation exceeds 30 dB at 30GHz.