Radio frequency micro-electromechanical microstrip antenna

Abstract

The invention discloses a radio frequency micro-electromechanical microstrip antenna, and belongs to the technical field of wireless communication. The radio frequency micro-electromechanical microstrip antenna comprises a metal frame and a microstrip antenna unit, wherein the microstrip antenna unit comprises a first adapter plate, a second adapter plate and a third adapter plate; metal shieldingstructures surrounding the central areas of the respective adapter plates are arranged on the three adapter plates, and the vertical interconnection of the metal shielding structures among the threeadapter plates is achieved by BGA interconnection structures; a first radiation patch is arranged on the front face of the first adapter plate; an air hole and a parasitic patch are arranged on the second adapter plate; a second radiation patch is arranged on the front face of the third adapter plate, and a reflecting surface s arranged on the back surface of the third adapter plate; and a feedinghole and a grounding hole are formed in the central area of the third adapter plate. The radio frequency micro-electromechanical microstrip antenna disclosed by the invention has the characteristicsof low profile, high gain and high bandwidth, and can solve the problems of narrow bandwidth and low gain of a low-profile microstrip antenna of a semiconductor substrate with a high dielectric constant.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a radio frequency micro-electromechanical microstrip antenna. Background technique [0002] With the continuous development of communication technology, electromagnetic waves have gradually developed from low frequency and high frequency ranges to radio frequency and microwave ranges. Traditional antenna technologies, such as horn antennas, log-periodic antennas, Cassegrain antennas, Yagi antennas, and reflector antennas, have problems such as large volume, high section height, and large installation structure. Compared with traditional antennas, strip antennas have the advantages of low profile, small size, and easy integration. Therefore, microstrip antennas based on semiconductor substrates are increasingly used in satellite communications, mobile communications, and other fields. [0003] The microstrip antenna based on the semiconductor substrate refers to ma...

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Problems solved by technology

[0004] However, since the dielectric constant of substrates such as glass and silicon is larger than that of PCB printed boards, it will lead to a decrease in the gain of the low-profile microstrip antenna and a decrease in bandwidth.

At the same time, in order to suppress the multipath effect, most of the antennas used in the communication field are circularly polarized antennas. The high dielectric constant substrate causes the surface wave effect of the array antenna, which deteriorates the axial ratio of the array antenna.

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