Design & development of linearly polarized C-Band Phased Array Antenna for Air-borne & Space-borne SAR payloads

Author

Moiz, Abdul ; Thontia, Rahul ; Rizvi, Syed Z. ; Usmani, Naveed Ahmed ; Ali, Md Sharafat ; Ali, A. K. M. Shafaat

Author_Institution

NED Univ. of Eng. & Technol., Karachi, Pakistan

fYear

2014

fDate

14-18 Jan. 2014

Firstpage

493

Lastpage

498

Abstract

This paper discusses the design of a 16-element linearly polarized C-Band Phased Array Antenna for airborne and space-borne SAR payload. The design is based on Microstrip Patch antenna. A 1×8 equal phase and equal power splitter was realized in reduced size of 25×6 cm². The array of 16 elements was optimized on Ansoft HFSS; a total bandwidth of 150 MHz was achieved at the center frequency of 5.1 GHz with a high bore-side gain of 18 dBi, elevation and azimuth planes´ HPBW of 50° and 10° respectively, and side lobe suppression of 14 dBi. Antenna beam steering up to ±11° was observed for ±60° phase delay between two input ports. The array of 16 elements was fabricated on a low dielectric substrate, and tested in Anechoic Chamber. The measured results are in close agreement with the simulated results of Ansoft HFSS.

Keywords

antenna phased arrays; microstrip antenna arrays; radar antennas; synthetic aperture radar; airborne SAR payloads; anechoic chamber; antenna beam steering; bandwidth 150 MHz; dielectric substrate; equal phase splitter; equal power splitter; frequency 5.1 GHz; gain 14 dB; gain 18 dB; linearly polarized c-band phased array antenna; microstrip patch antenna; phase delay; space borne SAR Payloads; Antenna measurements; Antenna radiation patterns; Arrays; Feeds; Microstrip; Microstrip antennas; Ports (Computers); Beam Steering; C-Band; Inset Fed; Linear Polarization; Phased Array Antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Sciences and Technology (IBCAST), 2014 11th International Bhurban Conference on

Conference_Location

Islamabad

Type

conf

DOI

10.1109/IBCAST.2014.6778195

Filename

6778195