A liquid crystal microwave modulation device and modulation method thereof

A device and microwave technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve problems such as weight reduction, and achieve the effects of total weight reduction, device quality reduction, and simple operation
CN106374170BActive Publication Date: 2021-11-05HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2021-11-05

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Abstract

The invention relates to a liquid crystal microwave modulation device and a modulation method thereof. The device consists of n liquid crystal cells with the same structure and n channels of driving voltage signal sources A, n=2~10; the structure of the liquid crystal cell is as follows from top to bottom: the first glass substrate, the first ITO electrode, the first An alignment layer, a liquid crystal layer, a second alignment layer, a second ITO electrode, and a second glass substrate; wherein, spherical resin spacers are placed in the liquid crystal layer, and the n liquid crystal cells with the same structure are stacked sequentially from top to bottom , the n-channel drive voltage signal source A is composed of n mutually independent waveform signal generators, and each waveform signal generator is correspondingly connected to a liquid crystal cell. In the present invention, the dielectric constant of each layer of liquid crystal in the direction of microwave propagation can be changed according to the multi-channel driving voltage signals set by the user, and the results of outgoing microwave interference and diffraction can be adjusted.
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Description

Technical field:

[0001] The present invention designs a liquid crystal microwave modulation device, which can modulate microwave characteristics in a wide range of frequencies. Each liquid crystal layer can be driven by different voltage signals and obtain different microwave phase shift modulation effects. Multilayer liquid crystals can change microwave phase shift , so that the microwave interference or diffraction phenomenon occurs, and the intensity of the main maximum microwave at the center of the interference is enhanced, which can be applied to the fields of actual production and life, smart antennas, and microwave communications. Background technique:

[0002] Because the principles of microwave and light wave are similar, when the coherence conditions are met: (1) the wave vector has parallel components; (2) the frequency is the same; (3) the phase difference between the beams remains constant during the observation time, microwave interference will occur . In the...

Claims

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