Design of a Compact Multielement Monopulse Feed for Ground-Station Satellite Tracking Applications

This letter presents design and realization of a five-element compact dual-polarized feed for a 4.5 m Cassegrain ground-station reflector antenna. The realized monopulse feed is being used to track remote sensing satellites and receive imagery data in X -band frequencies (8-8.5 GHz). The multielemen...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2019-09, Vol.18 (9), p.1721-1725
Main Authors: Roy, Sandip Sankar, Saha, Chinmoy, Nagasekhar, Tammana, Mane, Sandesh Bhimrao, Padmavathy, C. S., Umadevi, G., Kumar, Mallenahalli Naresh
Format: Article
Language:English
Subjects:
Antenna feeds
Apertures
Assembly
Circular septum polarizer
Circular waveguides
corrugated horn
Dual polarization (waves)
Error signals
five-element feed
Ground stations
monopulse feed
Radar tracking
Reflector antennas
Remote sensing
Satellite imagery
Satellite tracking
Satellites
secondary pattern
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Summary:This letter presents design and realization of a five-element compact dual-polarized feed for a 4.5 m Cassegrain ground-station reflector antenna. The realized monopulse feed is being used to track remote sensing satellites and receive imagery data in X -band frequencies (8-8.5 GHz). The multielement feed consists of one large-aperture corrugated horn acting as main element to extract the communication (sum port) signal and four side-launched circular waveguide elements around the central corrugated horn acting as tracking elements by extracting error signals in both azimuth and elevation. Various design issues of five-element communication/tracking feed assembly are presented along with simulation and measured results. The designed feed assembly satisfies the gain requirements of sum-and-difference pattern and serves as the most simple and compact design.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2019.2927236