A Compact K-/Ka-Band Diplexer with Dual-Mode Folded SIW Cavities

Publikationstyp
Conference Paper
Date Issued
2022-06
Sprache
English
Author(s)
Sielck, Noah  orcid-logo
Sieganschin, Anton  orcid-logo
Erkelenz, Kevin  
Jacob, Arne  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/13679
Journal
IEEE MTT-S International Microwave Symposium digest  
Volume
2022-June
Start Page
472
End Page
474
Citation
IEEE/MTT-S International Microwave Symposium (IMS 2022)
Contribution to Conference
IEEE/MTT-S International Microwave Symposium, IMS 2022  
Publisher DOI
10.1109/IMS37962.2022.9865241
Scopus ID
2-s2.0-85137978078
The compact diplexer discussed in this paper is intended to feed a dual-band phased array for K-/Ka-band satellite communications (SatCom). Its filters at 20 and 30 GHz rely on a dual-mode cavity design in folded substrate integrated waveguide (FSIW) technology. An additional transmission zero (TZ) is realized by source-load coupling through a higher order mode to improve the upper stopband performance. In this way, the diplexer achieves an isolation of more than 40 dB in the upper passband. The fractional bandwidth (FBW) reaches 14.5% in the lower and 18.6% in the upper passband. The insertion loss (IL) is 1.2 dB and 1.3 dB, respectively. The diplexer is manufactured with a standard printed circuit board (PCB) process. With its footprint of 2.5× 5 mm2 it is significantly more compact than devices with comparable performance described in literature.
Subjects
Compact
diplexer
dual-mode
filter
folded substrate integrated waveguide (FSIW)
DDC Class
620: Ingenieurwissenschaften