Array antenna for synthetic aperture radar operating in X and Ku-Bands: a study to enhance isolation between radiation elements

Alibakhshikenari, Mohammad, Virdee, Bal Singh, See, Chan, Abd-Alhameed, Raed, 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.

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Abstract / Description

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:	11 Sep 2020 16:33
URI:	https://repository.londonmet.ac.uk/id/eprint/1337

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