Liquid crystal patch antenna with variable electric tuning range and its preparation and use method
A patch antenna and tuning range technology, which is applied in resonant antennas, electrical short antennas, antennas, etc., can solve the problem of fixed and invariable tuning range, and achieve the effect of increasing the variable tuning range
Active Publication Date: 2019-01-25
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
The electric tuning antenna designed by using liquid crystal can realize the tuning function by using the characteristic that the dielectric constant of liquid crystal can be controlled by voltage. It has the advantages of low power consumption, light weight and simple structure, but its disadvantage is that the tuning range after selecting a certain liquid crystal Fixed and immutable
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[0064] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0065] The liquid crystal patch antenna with a variable electric tuning range provided by the present invention includes: an antenna radiator, a liquid crystal medium layer, and a variable medium layer; wherein, the liquid crystal medium layer is located directly below the antenna radiator, and the variable medium layer is located directly below the layer;
[0066] The antenna radiator is a rectangular patch fed from the side of the microstrip, and the liquid crystal medium layer is a liquid crystal mat...
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The invention provides a liquid crystal patch antenna with variable electrically turning ranges, the manufacturing method and the application method thereof. The antenna comprises an antenna radiator, a liquid crystal dielectric layer and a variable dielectric layer. The liquid crystal dielectric layer is located right beneath the antenna radiator. The variable dielectric layer is located right beneath the liquid crystal dielectric layer. The antenna radiator is a microstrip side-fed rectangular patch; the liquid crystal dielectric layer is a liquid crystal material which utilizes bias voltage to control the dielectric constants. The variable dielectric layer is a medium plate with varied dielectric constants dependant on specific conditions. According to the invention, the electrically turning range of the liquid crystal patch antenna can be leveled up or down for specific requirements through the adoption of different variable dielectric layers.
Description
technical field [0001] The present invention relates to antenna technology in the field of wireless technology, in particular to a liquid crystal patch antenna with a variable electric tuning range and methods for its preparation and use. Background technique [0002] The rapid development of wireless communication systems puts forward new requirements for antenna design, which promotes the development and improvement of antenna electrical tuning functions. The tuning function can be achieved through the use of electronic components or special media, including: diodes, MEMS switches, ferrites, and liquid crystals. The electric tuning antenna designed by using liquid crystal can realize the tuning function by using the characteristic that the dielectric constant of liquid crystal can be controlled by voltage. It has the advantages of low power consumption, light weight and simple structure, but its disadvantage is that the tuning range after selecting a certain liquid crystal...
Claims
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IPC IPC(8): H01Q9/04
CPCH01Q9/0442
Inventor 戴佳伟彭宏利张耀平
Owner SHANGHAI JIAOTONG UNIV