Low-X-polar compact antennas delivered to NSSC, Beijing

TK have designed and manufactured a set of five dual polarisation Lens/Corrugated horns antennas for China's National Space Science Centre in Beijing, operating from 10.5 GHz to 92 GHz

 

 

The antenna have very demanding X-polar specficiation (lower than -26dB), which require novel blooming of the lenses, visible above, and in the HFSS model below - the latter generated by our colleague Dr. Soe Min Tun, who performed the electromagnetic design

 

 

with typical predicted antenna patterns given below

 

 

Horns and all but one of the OMT's were made by electroforming

 

 

The S11 return loss  was measured to be in-spec at the UK's National Physical Laboratory

 

 

 

giving required S11 performaance - here in the  36-38 GHz  range in both polarisations

 

 

 

The horns are, so we understand, destined to fly on an NSSC aircraft to perform water-vapour and oxygen rotation-line measurements, with improved weather forcasting as an objective.

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