Array Antenna for Synthetic Aperture Radar Operating in X and Ku-Bands: A Study to Enhance Isolation Between Radiation Elements

Alibakhshikenari, Mohammad and Virdee, Bal Singh and See, Chan and Abd-Alhameed, Raed and Falcone, Francisco and Limiti, Ernesto (2018) Array Antenna for Synthetic Aperture Radar Operating in X and Ku-Bands: A Study to Enhance Isolation Between Radiation Elements. In: 12th European Conference on Synthetic Aperture Radar, 4-11 June 2018, Aachen, Germany. (In Press)

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Abstract

Modern synthetic aperture radars (SAR) require a system bandwidth of greater than 1 GHz. Waveguide slot antennas are popular for use in SAR applications because of their inherent advantages, namely high efficiency and power handling capability, but such antennas have a limited bandwidth. Although the bandwidth of slot antennas can be broadened by using ridge waveguides however this approach introduces manufacturing complexity and is costly. A novel solution is presented in this paper to realize a large bandwidth by using 2×3 array antenna where the mutual coupling between the radiating elements is suppressed by inserting an isolation wall between the radiating elements. The isolation wall comprises three intercoupled U-shaped microstrip transmission-lines. With this technique the antenna’s bandwidth for VSWR<1.5 is greater than 2 GHz inside the X- and Ku-bands.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: synthetic aperture radar (SAR), decoupling, meander lines, array antennas
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Depositing User: Bal Virdee
Date Deposited: 29 Jan 2018 09:38
Last Modified: 29 Jan 2018 09:38
URI: http://repository.londonmet.ac.uk/id/eprint/1337

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