Patent
Serially-fed phased array antennas with dielectric phase shifters
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TLDR
A phased array antenna includes a plurality of radiating elements, a feed line assembly, and a ground plane positioned between the radiating element and the feed line, with the ground plane having a plurality opening positioned between radiating and feed line assemblies and a voltage tunable dielectric phase shifters coupled to the feedline assembly as mentioned in this paper.Abstract:
A phased array antenna includes a plurality of radiating elements, a feed line assembly, a ground plane positioned between the plurality of radiating elements and the feed line assembly, with the ground plane having a plurality of openings positioned between the plurality of radiating elements and the feed line assembly, and a plurality of voltage tunable dielectric phase shifters coupled to the feed line assembly.read more
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TL;DR: In this article, a phase shift controller for controlling the phase shift provided by the phase shifters is presented. Butler et al. proposed a phased array antenna consisting of an input, a feed network, a plurality of radiating elements, and a number of continuously voltage tunable phase shift for receiving signals from the feed network.
References
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Patent
Dual frequency circularly polarized microwave antenna
TL;DR: In this paper, an aperture coupled microwave antenna (10) was proposed for processing circularly polarized signals. But the antenna was not designed to simultaneously process two signals having different frequencies.
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Ceramic ferroelectric composite material - BSTO-MgO
TL;DR: In this article, a novel ceramic ferroelectric material having a low dielectric constant, extremely low loss and high tunability was proposed, which is a composite consisting of Barium Strontium Titanate (BSTO) and a ceramic material.
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Phased array antenna system including a coplanar waveguide feed arrangement
TL;DR: In this article, the authors proposed a continuous variable phase delay structure which is used to control the beam pattern of a phased array antenna for microwave and millimeter wave applications, using either microstrip line, coplanar waveguide, or other construction techniques incorporating a solid dielectric transmission line.
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TL;DR: In this article, a control system for the antenna selectively connects and isolates RF currents between certain tuning strips and the patch, changing the effective length of the patch and thus the antenna's resonant frequency, thereby frequency tuning the antenna electrically over a relatively broad band of frequencies.
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TL;DR: In this article, a multi-layer Ferroelectric composite waveguide is proposed to reduce the effective dielectric constant of the waveguide while maintaining tunability, where bias plates are placed perpendicular to the laminate direction on direction of film deposition to maintain tunability.