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Reconfigurable chipless RFID tag design method based on port isolation technology

An RFID tag, port isolation technology, applied in the microwave field, can solve the problems of high production and application costs, unfavorable implementation, etc., and achieve the effect of reducing production costs, enhancing anti-interference ability, and compact structure

Pending Publication Date: 2021-11-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of the silicon chip used inside the chip RFID tag, the production and application costs are high, which is not conducive to its wide-scale implementation.

Method used

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  • Reconfigurable chipless RFID tag design method based on port isolation technology
  • Reconfigurable chipless RFID tag design method based on port isolation technology
  • Reconfigurable chipless RFID tag design method based on port isolation technology

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Embodiment Construction

[0039] Such as figure 1 Shown is an overall schematic diagram of a reconfigurable RFID tag encoding device based on port isolation technology, which is composed of a metal ground plate (1), a single-layer dielectric substrate (2), and an open-ended microstrip line (3-1 to 3 -8) Microstrip transmission lines (4-0 to 4-4). The metal ground plane is at the bottom layer, and the middle is a single-layer dielectric substrate (2). The dielectric substrate is etched to form terminal open-circuit microstrip lines (3-1 to 3-8) and microstrip transmission lines (4-0 to 4-4 ). The excitation is added to the 4 ports (port 1 to port 4) of the microstrip transmission line, and the encoding unit combination is set for the open-ended microstrip line (3-1 to 3-8).

[0040] The theory of the open-ended microstrip lines (3-1 to 3-8) designed by the present invention can be obtained from the following contents. The notch circuit involved in the present invention belongs to the first-order prot...

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Abstract

The invention provides a reconfigurable chipless RFID tag design method based on a port isolation technology. The method comprises the following steps: step 1, designing an RFID tag body; step 2, designing a four-port transmission network; step 3, designing a unit encoder; and step 4, reading the coding information. The designed single chipless RFID tag can realize various codes, the manufacturing cost of the chipless RFID tag is greatly reduced, in addition, the four-port network has a good isolation effect, and the anti-interference capability of the electronic tag is enhanced.

Description

technical field [0001] The invention belongs to the field of microwave technology and relates to a chipless radio frequency identification (RFID) design method. Background technique [0002] Radio Frequency Identification (RFID) is an automatic identification technology widely used in commercial fields. The technical system is mainly composed of an electronic tag for digital encoding and a reader for extracting encoded data. When the electronic tag enters the effective working area, the antenna in it is activated by the energy emitted by the reader or other excitations, and the electronic tag's The reflected signal is sent to the reader and then to the computer to complete the information processing, so as to realize the identification of the object target. For different occasions, specific radio frequency equipment systems need to be used. RFID has a long reading distance, without manual intervention, and has strong penetrability and anti-interference ability. RFID techn...

Claims

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Application Information

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IPC IPC(8): G06K19/07G06K19/077
CPCG06K19/0726G06K19/07771G06K19/07773Y02D30/70
Inventor 张黎童美松邱兰兰陆霄洁
Owner TONGJI UNIV