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Verification test method and device for ultrahigh-frequency RFID tag

A RFID tag verification test technology, applied in the direction of test sensing devices, cooperative devices, instruments, etc., can solve the problems of difficult ultra-high frequency RFID tag verification test, complicated operation, high cost, etc., to improve the tape-out success rate , improve reliability and save cost

Pending Publication Date: 2020-02-04
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above two methods require the use of a darkroom with a high-frequency tester and UHF RFID test equipment, which is costly and complicated to operate, and is inconvenient, making it difficult to quickly and accurately realize the verification test of UHF RFID tags

Method used

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  • Verification test method and device for ultrahigh-frequency RFID tag
  • Verification test method and device for ultrahigh-frequency RFID tag
  • Verification test method and device for ultrahigh-frequency RFID tag

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with description accompanying drawing and specific preferred embodiment, but does not limit protection scope of the present invention thereby.

[0039] Such as figure 2 As shown, the verification test method of the UHF RFID tag of the present embodiment, the method includes the tag chip radio frequency test step, and the tag chip radio frequency test step includes:

[0040] S1. Construction of radio frequency test device: configure an adjustable attenuator and a reader, the two ends of the adjustable attenuator are respectively connected to the tag chip to be tested and the reader through a coaxial transmission line, and the UHF RFID tag chip is constructed RF test equipment;

[0041] S2. Sensitivity test: By adjusting the attenuation value of the adjustable attenuator in the RF test device and the output power of the reader, the tag chip to be tested works at the lowest power, and measures the tag c...

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Abstract

The invention discloses a verification test method and device for an ultrahigh-frequency RFID tag. The method comprises a tag chip radio frequency test step, and comprises the following steps: S1, configuring an adjustable attenuator and a reader, and respectively connecting two ends of the adjustable attenuator with a to-be-tested tag chip and the reader through coaxial transmission lines to construct a radio frequency test device; Ss2, adjusting the attenuation value of the adjustable attenuator and the output power of the reader to enable the to-be-measured label chip to work at the lowestpower, measuring the reflection coefficient of the to-be-measured label chip at the lowest power, and calculating the sensitivity value of the to-be-measured label chip according to the lowest power and the reflection coefficient; and adjusting the distance between the to-be-measured label chip and the reader to adjust the incident power of the to-be-measured label chip, and when the incident power reaches the calculated sensitivity value, measuring the input impedance of the current to-be-measured label chip. The method has and the device have the advantages of being simple in operation method, low in implementation cost, high in verification test efficiency and precision and the like.

Description

technical field [0001] The present invention relates to the technical field of UHF RFID (Radio Frequency Identification, radio frequency identification), in particular to a verification test method and device for UHF RFID tags. Background technique [0002] UHF (Ultra High Frequency, UHF) RFID technology has developed rapidly in recent years, among which the ISO / IEC 18000-6C (EPCglobal Class 1Generation 2) UHF RFID air interface protocol in the 860–960MHz frequency band has more perfect functions and application The prospect is broad and attracts much attention. The electronic tag (Tag) is an important part of the RFID system, and it forms the basic RFID system together with the reader (Reader). UHF passive electronic tag is composed of three parts: antenna, RF / analog front-end circuit and baseband circuit. The tag receives the UHF frequency band signal transmitted by the reader from the antenna, rectifies and stabilizes the received signal, and generates a DC power supply...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00G06K17/00
CPCG06K7/0095G06K17/0029
Inventor 黄瑞杨茂涛刘谋海胡军华陈浩申丽曼吴志勇
Owner STATE GRID HUNAN ELECTRIC POWER
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