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arXiv · 2001.10930

Range Improvement in Single-Beam Phased Array Radars by Amplifier Impedance Tuning

Pedro Rodriguez-Garcia·Jack Sifri·Caleb Calabrese·Charles Baylis·Robert J. Marks II
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Abstract

Significant radar range degradation can be incurred due to variations in antenna impedance from changing array scan angle. Element-wise reconfigurable impedance tuners can be used to optimally match the power amplifier device; however, the impedance matching can also affect the array pattern. In this paper, the effects of element-wise impedance tuning on the transmitted power and on the array pattern are studied, and an approach is recommended for the element-wise implementation of impedance tuners. Examples of impact on array pattern and transmitted power are given using simulation of a designed switched-stub impedance tuner. As a result of these experiments, guidelines are developed for the creation of real-time circuit optimization techniques in the array elements.

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Pedro Rodriguez-Garcia, Jack Sifri, Caleb Calabrese, Charles Baylis, Robert J. Marks II. 2020-01-29. Range Improvement in Single-Beam Phased Array Radars by Amplifier Impedance Tuning. https://arxiv.org/abs/2001.10930

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