Millimeter Wave Amplitude Comparison Monopulse Using a Waveguide Rotman Lens

Steven Christie, Denver Humphrey , Mike Gleaves , Robert Cahill, Barry Lunn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 94 GHz waveguide Rotman lens is described which can be used to implement an amplitude comparison monopulse RADAR. In transmit mode, adjacent dual beam ports are excited with equal amplitude and phase to form a sum radiation pattern, and in receive mode, the outputs of the beam port pairs are combined using magic tees to provide a sum and a difference signal which can be used to calculate an angular error estimate for target acquisition and tracking. This approach provides an amplitude comparison monopulse system which can be scanned in azimuth and which has a low component count, with no requirement for phase shift circuitry in the array feed lines, making it suitable for mm-wave frequencies. A 12 input (beam ports), 12 output (array ports) lens is designed using CST Microwave Studio, and the predicted results are presented.
Original languageEnglish
Title of host publicationProceedings on the 36th ESA Antenna Workshop on Antennas and RF Systems for Space Science
Place of PublicationHolland
PublisherESA
Number of pages5
Publication statusPublished - 09 Oct 2015
Event36th ESA Antenna Workshop on Antennas and RF Systems for Space Science - Noordwijk, Netherlands
Duration: 06 Oct 201509 Oct 2015

Conference

Conference36th ESA Antenna Workshop on Antennas and RF Systems for Space Science
CountryNetherlands
CityNoordwijk
Period06/10/201509/10/2015

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    Christie, S., Humphrey , D., Gleaves , M., Cahill, R., & Lunn, B. (2015). Millimeter Wave Amplitude Comparison Monopulse Using a Waveguide Rotman Lens. In Proceedings on the 36th ESA Antenna Workshop on Antennas and RF Systems for Space Science ESA. http://congrexprojects.com/2015-events/15c14/introduction