Millimetre wavelength variable focusing antenna for power beaming and active denial systems. Issue 11 (1st August 2015)

• Record Type: Journal Article
• Authors: Danieli, Erez; Abramovich, Amir; Pinhasi, Yosef
• Is Part Of: IET microwaves, antennas & propagation. Volume 9:Issue 11(2015)
• Page Start: 1167
• Page End: 1172
• Publication Date: 2015-08-01
• Subjects: millimetre wave antennas -- reflector antennas -- matrix algebra; millimetre wavelength variable focusing antenna -- active denial systems -- adjustable focal length -- Cassegrain configuration -- maximum power density -- radioactive power beaming -- Gaussian beam model -- ABCD matrix method -- Cassegrain antenna -- quasi‐optical components; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2015.0054
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : A design of a millimetre wavelength antenna with adjustable focal length is demonstrated in this study. This antenna is designed to operate in the near field regime, and has the ability to change the focal plane position. The structure of the antenna is based on a Cassegrain configuration in order to deliver maximum power density to a pre‐defined focal plane. Possible applications are radioactive power beaming and active denial systems. The analysis and development of this antenna were carried‐out using the Gaussian beam model and the ABCD matrix method in order to find the focus position and spot size as a function of the axial distance. The development of the quasi‐optical components of the Cassegrain antenna, simulation results and experimental results are described in this work.