Miniaturized omnidirectional UHF-RFID tag antenna and production method thereof

A technology of UHF-RFID and tag antenna, applied in chemical/electrolytic methods to remove conductive materials, antennas, resonant antennas, etc., can solve problems affecting reading accuracy, applicable scene constraints, etc., to achieve guaranteed gain and omnidirectional performance, meet miniaturization, and reduce the effect of electrical length

Active Publication Date: 2021-08-20
HUNAN INSTITUTE OF ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a miniaturized omnidirectional UHF-RFID tag antenna and its preparation method, by synchronously improving the structure and preparation process of the antenna, it not only meets the miniaturization requirements of the electronic tag , it can also solve the problem that its applicable scenarios are restricted due to the narrow bandwidth of the antenna and affect the reading accuracy; on the basis of realizing miniaturization, satisfying a large impedance bandwidth and reading distance, the gain and omnidirectionality are guaranteed, and it is easy to Manufacturing and Industrialization

Method used

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  • Miniaturized omnidirectional UHF-RFID tag antenna and production method thereof
  • Miniaturized omnidirectional UHF-RFID tag antenna and production method thereof
  • Miniaturized omnidirectional UHF-RFID tag antenna and production method thereof

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Embodiment 2

[0074] The present embodiment provides the preparation method of the aforementioned miniaturized omnidirectional UHF-RFID tag antenna, which includes the following steps:

[0075] (1) Prepare the dielectric substrate 3, the antenna chip 1, and the conductive metal paste respectively;

[0076] (2) Calculate the position of the closed inner loop circuit 61 in the horizontal direction of the middle horizontal bending section 512 according to the required operating frequency point;

[0077] (3) The conductive metal paste is printed on the medium at one time according to the shape, position and size of the tapered Meander T-match impedance matching network 4, the antenna arm 5 and the radiation patch Tip-Loading6 in the radiation antenna 2 by the printing method. The outer surface of the substrate 3 is dried and formed;

[0078] (4) The antenna chip 1 is welded on the tapered Meander T-match impedance matching network 4 to make a miniaturized omnidirectional UHF-RFID tag antenna. ...

Embodiment 3

[0081] The present embodiment provides the aforementioned miniaturized omnidirectional UHF-RFID tag antenna preparation method, which includes the following steps:

[0082] (1) Prepare the dielectric substrate 3, the antenna chip 1, and the conductive metal foil respectively;

[0083] (2) Calculate the position of the closed inner loop circuit 61 in the horizontal direction of the middle horizontal bending section 512 according to the required operating frequency point;

[0084] (3) Lay the conductive metal foil on the outer surface of the dielectric substrate 3 by etching, according to the shape, position and Size, one-time printing paint on the metal foil material on the outer surface of the dielectric substrate 3, then corroding the foil material, degreasing, drying, and spraying insulating paint;

[0085] (4) The antenna chip 1 is welded on the tapered Meander T-match impedance matching network 4 to make a miniaturized omnidirectional UHF-RFID tag antenna. The antenna ch...

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Abstract

The invention discloses a miniaturized omnidirectional UHF-RFID tag antenna. The miniaturized omnidirectional UHF-RFID tag antenna comprises an antenna chip, a radiating antenna and a dielectric substrate. The radiation antenna comprises an antenna arm, an impedance matching network and radiation patches; the antenna arm is an open outer loop; the radiation patches are arranged in a central symmetry manner by taking the center of the dielectric substrate as a reference point; the overall outline of the impedance matching network is ''E''-shaped; the antenna chip is electrically connected with the conical impedance matching network to form a closed inner loop; the open type outer ring loop forms a single-sided bent dipole antenna; the two radiation patches form a rectangular patch antenna for capacitive top loading; and the dielectric substrate, the closed inner loop, the bent dipole antenna and the rectangular patch antenna cooperate with each other so that the size of the radiation antenna is reduced, the length of the antenna is shortened, and the working bandwidth, gain and omnidirectional performance of the antenna are improved. The invention also discloses a production method of the antenna.

Description

technical field [0001] The invention relates to the technical fields of radio frequency identification and the Internet of Things, in particular to a miniaturized omnidirectional UHF-RFID tag antenna and a preparation method thereof. Background technique [0002] RFID is a non-contact automatic identification technology realized by radio frequency communication. It includes two main parts: electronic tag (tag) and reader (reader). Transmission to complete the automatic identification process at a certain distance. The RFID tag antenna generally refers to the transponder antenna of the RFID electronic tag, which is a communication induction antenna, and generally forms a complete RFID electronic tag transponder together with the chip. RFID tag antennas are divided into metal etching antennas, printed antennas, and copper-plated antennas due to different materials and manufacturing processes. As an important part of the RFID system, the RFID tag antenna plays a key role in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/22H01Q1/00H01Q1/38H01Q1/50H01Q9/04H05K3/06H05K3/12H05K3/22
CPCH01Q1/2225H01Q1/002H01Q1/38H01Q1/50H01Q9/0407H05K3/12H05K3/1283H05K3/06H05K3/227
Inventor 邓永和刘晓毅贺君颜铄清
Owner HUNAN INSTITUTE OF ENGINEERING
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