Patent
Apparatus and method for shifting the phase of microwaves
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TLDR
In this article, a liquid dielectric provided by a polymer solution through which the microwaves propagate and across which a controllable electric field is established is used for phase shift.Abstract:
Microwave phase shift is obtained by using a liquid dielectric provided by a polymer solution through which the microwaves propagate and across which a controllable electric field is established.read more
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Patent
Microwave phase modulation with liquid crystals
TL;DR: In this article, a liquid crystal medium is used as the phase modulating medium in a microwave phase-modulating cell (20), where applied electric and/or magnetic fields transverse to the direction of wave propagation create a birefringence that changes the velocity and the index of refraction of the medium.
Journal ArticleDOI
Electrically Controllable Liquid Artificial Dielectric Media
TL;DR: In this paper, electric field controlled liquid dielectrics demonstrating their application in control devices at 35 and 95 GHz were discussed. But the authors focused on electronic beam steering of millimeter-wave antennas.
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Liquid crystal-based composite material including electrically conducting elongated particles and having enhanced microwave birefringence
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Phase shifter for high-frequency signals
Alexander Gäbler,Rolf Jakoby +1 more
TL;DR: In this article, the waveguide cross-section has liquid crystal areas parallel and/or vertical to the wave fronts, and the dielectric material comprises liquid crystal, plastic, glass and or ceramics.
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TL;DR: An adjustable phase shifter is formed of an RF transmission line having an internal cavity, in which the phase shift produced is determined in part by a mound of flowable dielectric material in the internal cavity.
References
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Patent
Microwave phase shifter with liquid dielectric having metallic particles in suspension
TL;DR: In this paper, an electrically controllable anisotropy dielectric medium is used in the microwave beam path for phase shifters and electronic beam steering antennas, which use an electric anisotropic medium.
Patent
Light valves with high frequency excitation
TL;DR: A light valve having a cell containing a fluid suspension of minute particles dispersed therein capable of orientation by an electric field, has applied to an alternating voltage having a frequency at least as high as approximately 325 KHz and preferably 400 KHz, or higher, to prevent agglomeration of the particles over long periods of use as mentioned in this paper.
Patent
Liquid cell optical shutter
TL;DR: In this article, an optical shutter consisting of an aromatic hydrocarbon in liquid form together with a solvent and an electrolyte disposed in a cell having a pair of electrodes is presented, where an electric field is applied to the cell the hydrocarbon becomes ionized and absorbs light within the visible region while the neutral compound is transparent.