Sidelobe Level Suppression and Scan-Loss Compensation in A Wide-Angular Scanning Linear Array Using Subarrays Amplitude Control

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Sidelobe Level Suppression and Scan-Loss Compensation in A Wide-Angular Scanning Linear Array Using Subarrays Amplitude Control

Conference Paper (2021)

Author(s)

Fannush S. Akbar (Institut Teknologi Sepuluh Nopember)

Leo Ligthart (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Gamantyo Hendrantoro (Institut Teknologi Sepuluh Nopember)

Ioan E. Lager (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Research Group

Electrical Engineering Education

Sidelobe suppression Scan-loss compensation Matching amplitude Subarray

DOI related publication

https://doi.org/10.23919/EuMC48046.2021.9337939 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:9b4bafd2-5adb-4f70-97fe-6bf377068f08

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Publication Year

2021

Language

English

Research Group

Electrical Engineering Education

Article number

9337939

Pages (from-to)

352-355

ISBN (electronic)

9782874870590

Event

50th European Microwave Conference, EuMC 2020 (2021-01-12 - 2021-01-14), Utrecht, Netherlands

Downloads counter

185

Abstract

An improvement of the wide-angular scan-loss compensation (SLC) and sidelobe level (SLL) in a small linear array with 23 elements is discussed. The array integrates small subarrays with an optimized pattern for SLC, while the SLL suppression is obtained by using a combination of elements with phase steering only and elements with amplitude/phase control in the center. This combination leads to a less number of T/R module. When the antenna is scanned to ±60°, a maximum first and peak SLL (FSLL and PSLL) of -15.1 dB are obtained. In addition, a -4.6 scan-loss is obtained, it means that the SLC is 2.4 dB with a Cavity-backed U-slotted Patch (CUP) antenna. These performance results are very attractive in particular for a small linear array with wide angular scanning capability.