UHF miniaturized low-profile antenna

Abstract

The invention relates to a UHF (Ultra High Frequency) miniaturized low-profile antenna. The antenna consists of a radiation PCB (Printed Circuit Board), a radio frequency connector, a metal support column, a radio frequency cable assembly, a bottom plate and an antenna cover, the radiation PCB is a microwave dielectric plate printed with an annular metal pattern, and the inner conductor and the outer conductor of the radio frequency connector are respectively connected with the head and the tail of the annular metal pattern on the radiation PCB; the bottom plate serves as a mounting seat of the antenna and also serves as a metal ground of the antenna, and the radiation PCB is fixed on the bottom plate through metal supporting columns at the periphery; the metal supporting column is located between the radiation PCB and the bottom plate; the antenna housing is mounted on the bottom plate to protect the whole antenna structure; the flange of the radio frequency cable assembly is installed on the antenna housing, the other end of the radio frequency cable assembly is connected with the radio frequency connector fixed on the radiation PCB, and an antenna feed port is led out to the side wall of the appearance so as to be conveniently connected with signal receiving and transmitting equipment. The antenna is novel in design and has the radiation performance of miniaturization, wide beam and high gain.

Description

technical field [0001] The present invention relates to the field of antenna technology, in particular to the field of antenna technology with miniaturization, low profile, wide beam and high gain. Background technique [0002] With the development of Internet of Things communication equipment, passive antennas, as an important part of the Internet of Things communication system, play an increasingly important role. Especially the IoT communication antenna working in the UHF frequency band, the antenna wavelength in this frequency band is long, and the size of the conventionally designed antenna is large. Therefore, the terminal equipment proposes miniaturization, low profile, wide beam, high gain, low cost and other designs for the antenna. Require. Therefore, the research on high-performance low-profile UHF antennas has attracted more and more attention from related industries. [0003] The microstrip antenna form with high dielectric constant material as the substrate i...

AI Technical Summary

Problems solved by technology

The normal mode helical antenna can reduce the antenna length to 0.02λ 0 , the radiation pattern is horizontal and omnidirectional, which is also greatly affected by the installation environment. At the same time, the performance of the miniaturized helical antenna is sensitive. It is necessary to design a matching network to debug the standing wave ratio of the port, which is difficult to process and debug.

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