A 340 GHz High Gaussicity Smooth Spline Horn Antenna for the STEAMR Instrument
Paper in proceeding, 2014
We present the design, fabrication and measure-ments of a smooth walled spline feed horn antenna for the satellite borne climate research instrument STEAMR operating at 340GHz. A method has been developed which, for a certain desired beam waist, can be used to optimize the horn profile for high Gaussicity and ultra-low sidelobes. The simulated performance of the horn achieves a beam waist of 1.9 mm over the band 323-357 GHz with Gaussian coupling efficiency exceeding 98%. The peak cross-polar sidelobes are below -28 dB over the required frequency band. For cost effective manufacturing with high repeatability, the smooth wall spline profile is drilled in out from a metal block using a custom made broach. To validate the design and fabrication, planar measurements of the phase and amplitude have been performed and from measured E-field vital horn parameters have been extracted.
Author
Arvid Hammar
Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory
Yogesh Karandikar
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Per Forsberg
Omnisys Instruments AB
Anders Emrich
GigaHertz Centre
Jan Stake
Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory
2014 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
1522-3965 (ISSN)
649-650978-1-4799-3538-3 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories (SSIF 2011)
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/APS.2014.6904655
ISBN
978-1-4799-3538-3