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.