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A high directivity broadband corrugated horn for W-band gyro-devices

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4 Author(s)
Paul McElhinney ; SUPA, Department of Physics, University of Strathclyde, Glasgow, Scotland, UK ; Craig R. Donaldson ; Liang Zhang ; Wenlong He

A quasi-optical mode converter in the form of a corrugated horn has been designed through numerical simulations, manufactured and experimentally measured for application in W-band gyro-devices. This horn converts a cylindrical TE11 mode into a free space TEM00 mode in a frequency band of 84-104 GHz with a reflection better than 30 dB, a Gaussian coupling efficiency of 98% and directivity of 26.6 dB at 95 GHz. The small beam waist makes such a horn ideal for use with a depressed collector system. The measured results are in excellent agreement with the numerical simulations.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:61 ,  Issue: 3 )