Internet of Things antenna applied to UHF frequency band

Abstract

The invention relates to the technical field of mobile communication, and discloses an Internet of Things antenna applied to a UHF frequency band. A radiation vibrator unit and a grounding vibrator unit adopt left and right structures in a mirror image setting mode, so that vertical polarization can be satisfied and horizontal omnidirectional radiation is ensured; foldable radiation double arms and foldable grounding double arms are added on the upper surface of a dielectric plate; the foldable radiation double arms and the foldable grounding double arms are connected with the radiation vibrator unit and the grounding vibrator unit through metalized through holes, so that the physical dimension of the antenna is reduced, and the portable design requirement of the system can be satisfied; the antenna provided by the invention adopts a printing circuit process, and has excellent broadband characteristic; and compared with the prior art, the production cost is low.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an antenna applied to the UHF frequency band Internet of Things. Background technique [0002] With the rapid development of 4G / 5G communication technology, the Internet of Things (IoT) is committed to connecting people and things, and things and things, and has become an important technology in the future. At present, short-distance communication technology is generally used in local area network communication scenarios such as smart home and industrial data collection, but long-distance communication technology is required for wide-range and long-distance connections. IoT devices based on mobile cellular communication technology have the disadvantages of high power consumption and high cost. The carrying capacity of the current mobile cellular network is not enough to support the connection between objects. LPWAN (Low Power Wide Area Network), a low-power wide-are...

AI Technical Summary

Problems solved by technology

In the prior art, the omnidirectional antenna structure used in this frequency band includes a series-fed copper tube structure, as well as Franklin, etc., in which a dipole with a copper tube or spring structure is used. In order to achieve 40Mhz bandwidth and impedance matching performance, a diameter of 20mm and a length close to 450mm and the assembly and welding process is relatively complicated, the antenna size is large, and the defect rate is high

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