2023-03-17
Affordable Satellite on the Move Antenna Based on Delay-Line-PLL Phase Shifting
By
Ali Mohammadian Kalkhoran,
Dr. Ali Mohammadian Kalkhoran
Iran University of Science and Technology
Iran
Homepage
Progress In Electromagnetics Research C, Vol. 131, 59-72, 2023
Abstract
This paper presents the design methodology, simulation, and affordable implementation of a mobile digital satellite broadcasting receiver with 64 elements. The speed and range of electronic beamforming are also obtained. The proposed methodology including techniques and architecture are defined by concerning cost, commercial off-the-shelf and components, and avoidance of high-frequency circuit designs by Delay-line-PLL for phase shifting, instead of expensive RF phase shifters with complicated control buses. Choosing this architecture results in using available elements and home receivers for antenna implementation. The design results in 6-bit resolution phase shifters and ±16 degrees 2D half power electronic beam scanning range. For practical implementation feasibility, a prototype of the array is fabricated and tested, successfully. Obtaining the phase shifters' resolution and sampling of the array output power are also described. A simple and effective algorithm is proposed for grating lobes elimination, and SNR maximizing which performs the tracking task under the platform movement conditions.
