A filtering dual polarised antenna feed to protect mm-wave radio telescope antennas against narrow band spacebased cloud radars

Kees van 't Klooster, V. Dainelli, R. Torini, G. Figlia, G. Tomasetti, E. Natale

Research output: Contribution to conferencePaper

Abstract

Due to the high transmitted power level, the signals coming from an orbiting cloud radar operating near 94 GHz can interfere with Earth-based receivers within the entire spectrum. This is particularly true for high-sensitive receivers as used in radio-astronomy. In certain situations there can be even damage of the ultra sensitive front-end in such receivers. The interference scenario as caused by a cloud-radar operating near 94 GHz from an orbiting satellite is discussed. A few solutions to alleviate the potential impact in ultra sensitive receiver front-ends in millimeter-wave radio telescopes have been studied. A filtering feed with a narrow band blocking capability has been suggested to protect such ultra sensitive receiving front-ends. The design, realisation and test of hardware related to such a filtering antenna feed (at ambient and cryogenic temperatures) are discussed.
Translated title of the contributionEen belichter voor twee polarisaties met ingebouwd filter om radio telescopen te beschermen tegen radar signalen afkomstig van smalbandige wolken radars op een satelliet
Original languageEnglish
Pages1394-1397
Number of pages4
Publication statusPublished - 9 Apr 2000
Externally publishedYes
Eventconference; AP 2000, Millennium Conference on Antennas & Propagation, Davos, Switzerland; 2000-04-09; 2000-04-14 -
Duration: 9 Apr 200014 Apr 2000

Conference

Conferenceconference; AP 2000, Millennium Conference on Antennas & Propagation, Davos, Switzerland; 2000-04-09; 2000-04-14
Period9/04/0014/04/00
OtherAP 2000, Millennium Conference on Antennas & Propagation, Davos, Switzerland

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