Feedhorn synthesis using a parameterized aperture field distribution

Zhang, Liang and Whyte, Colin G. and Donaldson, Craig R. and Ronald, Kevin and Cross, Adrian W. (2024) Feedhorn synthesis using a parameterized aperture field distribution. IEEE Electron Device Letters, 45 (2). pp. 252-255. ISSN 0741-3106 (https://doi.org/10.1109/LED.2023.3345222)

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Abstract

In this letter, we present an improved method for synthesizing smooth-profiled horns. A direct connection between the mode compositions and far-field parameters was established by utilizing a parameterized aperture field distribution and the field decomposition method. It speeds up the optimization process by a factor of 5. The requirements for the aperture field to maintain a constant directivity were studied based on the method. A feedhorn was optimized for a W-band gyro-TWA with a 0.7 dB variation of the directivity within a bandwidth of 10%.