A compensated dual-band SPDT switch for radar duplexers at S- and X-Band

Publikationstyp
Conference Paper
Publikationsdatum
2016
Sprache
English
Author
Hansen, Nils 
Rave, Christian 
Rohrdantz, Benjamin 
Jacob, Arne 
Institut
Hochfrequenztechnik E-3 
TORE-URI
http://hdl.handle.net/11420/5673
Start Page
699
End Page
702
Article Number
7824439
Citation
European Microwave Conference (EuMC 2017)
Contribution to Conference
47th European Microwave Conference, EuMC 2017 
Publisher DOI
10.1109/EuMC.2016.7824439
Scopus ID
2-s2.0-85015163684
A single-pole double-throw (SPDT) switch for a dual-band radar duplexer at S- and X-band is presented. The switch is particularly useful for monostatic phased array radars where a high isolation between transmitter and receiver is necessary. It consists of three PIN-diodes and needs only one switching voltage. A high isolation and a low insertion loss combined with the potential for a high power handling capability are achieved by utilizing an asymmetric PIN-diode network with shunt diodes in the transmit and a series diode in the receive path. The isolation is improved at both frequency bands by compensating the parasitic capacitance of the series diode. Simulation and measurement results are presented. The fabricated switch exhibits an isolation of more than 30dB and an insertion loss of less than 1.4dB in the transmit case.