Design of 94/238 GHz Dual-Frequency Feed Horn for Atmospheric Radar Applications

Nagaraja, Srinivas P. M.; Monje, Raquel; Cofield, Rick; Focardi, Paolo

doi:10.1109/cama49227.2021.9703615

Cited by 1 publication

(1 citation statement)

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“…The radar electronics design is intended to be modular allowing to deploy different combinations of CloudCube's frequency bands to address focused science questions within a budgetconstrained environment. Hence dual frequency (Ka/W, W/G-band) and multifrequency (Ka/W/G-band) horns are being designed [4], [5]. A wide variety of multifrequency horn solutions have been proposed in the literature.…”

Section: Introductionmentioning

confidence: 99%

Compact Dual Band Feed System for a Multifrequency Atmospheric Radar

Nagaraja

Focardi

Monje

et al. 2022

IEEE Open J. Antennas Propag.

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The design, simulations and measurement results of a dual frequency feed horn operating at 35.75 GHz (Ka-band) and 94.05 GHz (W-band) are presented. The horn is designed to be used as a feed for a multifrequency atmospheric radar. The design is composed of three parts, a spline profile horn, a waveguide diplexer with Ka-and W-band ports orthogonal to each other and a Ka-band waveguide iris filter. The filter is used to achieve greater than 70 dB isolation between the Ka-and W-band ports. Directivities of 21 dB and 26 dB are achieved at Ka and W-band, respectively and a −12 dB beam width of 31 and 21 degrees has been achieved at Ka-and W-band. Measured patterns at both operating frequencies along with S-parameter measurements of the filter and the feed horn assembly are in good agreement with the simulation results.INDEX TERMS Filters, horn antennas, radar antennas, multifrequency antennas, millimeter wave antennas.

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Section: Introductionmentioning

confidence: 99%