Ultrahigh frequency electronic tag antenna

An electronic tag and ultra-high frequency technology, applied in the field of radio frequency identification, can solve the problems of difficult chip matching, complex structure, high cost, etc., and achieve the effect of expanding bandwidth, reducing size, and widening bandwidth

Inactive Publication Date: 2016-04-20
南京聚普电子科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, in order to overcome the shortcomings of the miniaturized tag antenna, such as complex structure, high cost, small gain, and difficulty in matching with the chip, the present invention provides a UHF electronic tag antenna based on a meander line symmetrical structure, And use T-shaped matching network to feed the antenna

Method used

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  • Ultrahigh frequency electronic tag antenna

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specific Embodiment

[0041] A specific embodiment of the present invention is as follows:

[0042] In the present invention, the working frequency range of the electronic tag antenna 1 is used in the UHF frequency band. The UHF frequency band is the ultra-high frequency radio wave frequency band. At present, the working frequency range of the UHF electronic tag in my country is 860MHz~960MHz. The resonant frequency of the electronic tag antenna 1 is 925MHz. When the designed dipole antenna has a center frequency of 925MHz, the return loss of the antenna signal port (S 11 ) reached the minimum value during the optimization process, indicating that the impedance matching is good. Therefore, the resonant frequency in this embodiment is 925MHz.

[0043] An ultra-high frequency electronic tag antenna includes a dielectric substrate 2 and an electronic tag antenna 1 loaded on the surface of the dielectric substrate 2. The dielectric substrate 2 includes two oppositely arranged front and back surfaces, a...

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Abstract

The invention discloses an ultrahigh frequency electronic tag antenna, which belongs to the production technology field of electronic tags, and comprises a medium base plate and an ultrahigh frequency electronic tag antenna which is loaded on the surface of the medium base plate, radiating antennas are further symmetrically arranged on the surface of the medium base plate, and comprise bending structures and loading wires, and the bending structures are formed by alternately connecting wide wires and narrow wires. The ultrahigh frequency electronic tag antenna further comprises T-type matching structures which are symmetrically arranged, the T-type matching structures are embedded into the radiating antennas which are symmetrically arranged, and are used to feed for the radiating antennas, feed ports are arranged on openings of the T-type matching structures which are symmetrically arranged, electronic tag chips are welded on the feed ports, and the radiating antennas and the T-type matching structures are bonded on the medium base plate through a curable adhesion film. The ultrahigh frequency electronic tag antenna is simple in structure, cheap in price, excellent in gain effect and easy to match with chips.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification and the technical field of electronic label production, and in particular relates to an ultra-high frequency electronic label antenna. Background technique [0002] The RFID system is a non-contact automatic identification system, which automatically identifies the target object through radio frequency wireless signals and obtains relevant data. According to the electromagnetic wave frequency used by the RFID system, RFID can be divided into low frequency, high frequency and ultra high frequency. Ultra-high frequency radio frequency identification (UHF RFID) technology has the characteristics of long recognition distance, high recognition accuracy, fast recognition speed, strong anti-interference ability, long service life, penetrable non-metallic materials and wide application range. It is a brand-new management method launched to automatically collect characteristic data ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38G06K19/07
CPCH01Q1/38G06K19/07
Inventor 吴欣延
Owner 南京聚普电子科技有限公司
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