Omni-directional radio frequency identification tag antenna and radio frequency identification tag

Abstract

The invention provides an omni-directional radio frequency identification tag antenna, comprising a tag substrate, a resonance loop surface circuit pattern part, a circuit resonance arm surface circuit pattern part and four metal resonance arms, wherein the resonance loop surface circuit pattern part is arranged on the tag substrate and composed of at least one resonance loop; the circuit resonance arm surface circuit pattern part is arranged on the tag substrate and composed of at least two circuit resonance arms, the circuit resonance arms are connected with the resonance loop surface circuit pattern part and the circuit resonance arms correspond to each other pairwise and form a first plane radiation surface; four metal harmonic arms are all connected with the resonance loop surface circuit pattern part, correspond to each other pairwise and form a second plane radiation surface and a third plane radiation surface. The omni-directional radio frequency identification tag antenna has radiation surfaces on three coordinate axes and the corresponding radiation arms are uniformly distributed at phase points at intervals of 45 degrees, the generated antenna effective gain chart covers all the directions of the spherical surface, and thus the antenna is named a real omni-directional antenna.

Description

technical field [0001] The invention relates to an antenna of a radio frequency identification tag, in particular to an omnidirectional radio frequency identification tag antenna. Background technique [0002] RFID is the abbreviation of radio frequency identification technology (Radio Frequency Identification). RFID is commonly known as electronic tags. RFID technology is a non-contact two-way communication that uses radio frequency signals to automatically identify target objects and obtain relevant information. Wireless communication technology of information. With the advancement of science and technology, RFID has been involved in all aspects of people's daily life, and has been widely used in many fields such as industrial automation, commercial automation, traffic calculation control management, such as train traffic monitoring systems, expressway automatic toll systems, items Management, assembly line production automation, access control systems, financial transact...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an omnidirectional radio frequency identification tag antenna to solve the problem that the existing antenna is difficult to realize "omnidirectional" in the true sense

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