Novel passive ultrahigh-frequency tag antenna for printing
A tag antenna and ultra-high frequency technology, applied in the field of RFID tag antenna, can solve the problems of low antenna efficiency and complex structure, and achieve the effects of low cost, easy processing and simple production
Inactive Publication Date: 2018-11-27
BEIJING HONGCHENG INNOVATION TECH CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] 2. Due to the miniaturization of the RFID tag antenna and its attachment to the surface of objects, how to improve the efficiency of the tag antenna in a limited space is a crucial issue in RFID technology at present.
[0005] 3. The efficiency of the existing antenna is low, and the structure is relatively complicated
Method used
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[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0025] Since the most important working characteristic of the tag is the reading distance, the reading distance refers to the maximum distance at which the RFID reader can recognize the backscattered signal of the tag. Generally speaking, the sensitivity of the reader is usually higher than that of the label, so the reading distance is defined by the response threshold of the label. The directionality of the label, the material the label is attached to and the environment in which the electromagnetic wave propagates also affect t...
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Abstract
The invention provides a novel passive ultrahigh-frequency tag antenna for printing. The novel passive ultrahigh-frequency tag antenna comprises a dielectric plate, a tag chip, an antenna and a grounding portion; the tag chip and the antenna are printed on the dielectric plate; the dielectric plate is connected with the grounding portion; the bandwidth of the tag antenna is 90MHz, the tag antennaoperates at the frequency of 915MHz, and the working bandwidth ranges from 870MHz to 960MHz; the dielectric plate is prepared from a flexible polyester material or an FR4 material, and the radiation pattern of the tag antenna is covered in an omnidirectional or semi-spherical mode. The tag antenna provided by the invention has a more novel and simpler structure and a wider bandwidth than general printed tag antennas, and has the same size as a conventional radio frequency card; the tag antenna is simple to manufacture and low in cost, and can be widely applied to RFID (radio frequency identification device) systems.
Description
technical field [0001] The invention relates to the technical field of RFID tag antennas, in particular to a novel passive ultra-high frequency tag antenna applied to printing. Background technique [0002] The existing RFID tag antennas have the following defects: [0003] 1. RFID tags rely on reflected and modulated radio waves to communicate with readers, so the tag antenna is a key component of the RFID electronic tag system, and the design of the RFID tag antenna has a greater impact on the performance of the RFID system. [0004] 2. Due to the miniaturization of the RFID tag antenna and its attachment to the surface of objects, how to improve the efficiency of the tag antenna in a limited space is a crucial issue in RFID technology. [0005] 3. The efficiency of the existing antenna is low, and the structure is relatively complicated. Contents of the invention [0006] The aim of the present invention is to solve at least one of said technical drawbacks. [0007] ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01Q1/38H01Q1/48H01Q1/22G06K19/077
CPCG06K19/07775H01Q1/2225H01Q1/38H01Q1/48
Inventor 田川李鑫尹祖伟
Owner BEIJING HONGCHENG INNOVATION TECH CO LTD