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A Modular Architecture for Low Cost Phased Array Antenna System for Ka-Band Mobile Satellite Communication

A Modular Architecture for Low Cost Phased Array Antenna System for Ka-Band Mobile Satellite Communication

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Advances in Communications Satellite Systems Proceedings of The 36th International Communications Satellite Systems Conference (ICSSC-2018) — Recommend this title to your library

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A low-cost and low profile phased array antenna system based on a modular approach is being developed for Ka-band mobile SATCOM applications. A Transmitter (TX) antenna array has been designed to provide the required circular polarized (CP) radiation beam with sufficient gain and a radiation pattern that satisfies the standard (FCC) emission mask. In the proposed modular approach, the intelligent active phased subarray (module) is designed and used as a building block to construct the whole array in any form and any size in any customized platform. In this design, the size of the intelligent subarray is chosen to be 4×4 with half-wavelength separation between the elements for both TX (30 GHz), and RX (20 GHz) array antennas. Larger array antenna with a few thousands of radiating elements can be formed by assembling as many modules as required on one platform. This paper discusses the modular approach aspects and its application in large scale phased array antenna implementation. Super TX / RX array modules of 256 elements are assembled and tested successfully to validate the proposed modular architecture. The measured radiation patterns at 30/ 20 GHz shows that the antenna's main beam can be steered to ± 70° in both azimuth and elevation directions.

Inspec keywords: electromagnetic wave polarisation; mobile satellite communication; transmitting antennas; satellite antennas; antenna testing; UHF antennas; radio receivers; antenna phased arrays; assembling; microwave antenna arrays; radio transmitters; receiving antennas; antenna radiation patterns

Other keywords: frequency 30.0 GHz; Ka-band mobile SATCOM applications; standard emission mask; Ka-band mobile satellite communication; CP radiation beam; phased array antenna system; frequency 20.0 GHz; intelligent active phased subarray; TX antenna array; RX array antennas; transmitter antenna array; circular polarized radiation beam; radiation pattern measurement; FCC emission mask; receiver antenna array

Subjects: Microassembly techniques; Antenna arrays; Mobile radio systems; Satellite communication systems

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