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A Compact Low-Loss Multilayer SIW Diplexer at K/Ka-Band
Publikationstyp
Conference Paper
Date Issued
2019-04-23
Sprache
English
Author(s)
Institut
TORE-URI
Start Page
51
End Page
54
Citation
GeMiC 2019 - 2019 German Microwave Conference : 51-54 (2019-04-23)
Contribution to Conference
Publisher DOI
Scopus ID
This contribution deals with a compact substrate integrated waveguide (SIW) diplexer for terminal array antennas at K-/Ka-band. The diplexer connects the transmit (Tx) and the receive (Rx) frontend with an antenna element. It is comprised of a bifurcation and two second order bandpass filters with low insertion loss. The Rx-filter has additionally two transmission zeros in the Tx-band. The structure is implemented in multilayer printed circuit board (PCB) technology. This yields a compact design which can be integrated in an array with half-wave element spacing. The simulated diplexer performance is validated by measurements. The insertion loss in the Rx-band remains below 0.7 dB, while the Tx-/Rx-isolation exceeds 40 dB in a 1.2 GHz band at Tx.
More Funding Information
German Aerospace Center (DLR) on behalf of the German Federal Ministry of Economics and Technology (BMWi) under research contract 50 YB 1707.