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Wideband ceramic anti-metal tag

An anti-metal tag, wide-band technology, applied in the field of microwave communication, can solve the problems of restricting the use of tags and narrow antenna bandwidth, and achieve the effect of extending the reading and writing distance, expanding the bandwidth and convenient application.

Inactive Publication Date: 2015-05-20
BEIJING CEC HUADA ELECTRONIC DESIGN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the higher the dielectric constant of the ceramic medium, the larger the Q value, most of the energy is stored in the medium, and the bandwidth of the antenna is extremely narrow, only a few tenths of ordinary large-size anti-metal tags, which limits the use of tags. use

Method used

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  • Wideband ceramic anti-metal tag

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Embodiment Construction

[0013] The specific implementation examples described here are only used to explain the present invention, but not to limit the present invention.

[0014] Reference figure 1 In this embodiment, the broadband ceramic anti-metal tag includes an antenna 10, a chip 20, and a substrate 30. The substrate 30 houses the antenna 10 and the chip 20, wherein the antenna 10 matches the chip 20, and the antenna 10 includes a radiating surface 11 And the ground plane 12, the radiating plane 11 is located on the front of the substrate 30, the ground plane 12 is on the back of the substrate 30, the chip 20 is located on the side of the substrate 30, and is connected to the radiating plane 11 and the ground plane 12. The plane 11 and the ground plane 12 are arranged in a mirror image.

[0015] The shape and size of the substrate 30 require specific settings. For example, in one embodiment, the substrate 30 may be arranged in a rectangular shape with a length of 5 mm to 35 mm and a width of 5 mm ...

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Abstract

The invention relates to the field of RFID (radio frequency identification) and provides a wideband ceramic anti-metal tag. The wideband ceramic anti-metal tag comprises an antenna, a chip and a substrate, and the substrate holds the antenna and the chip which are matched with each other. The antenna comprises a radiation portion, an impedance regulating portion, a coplanar coupling portion and a ground plane, wherein the radiation portion, the impedance regulating portion and the coplanar coupling portion are positioned on the front face of the substrate, the ground plane is positioned on the back face of the substrate, and the impedance regulating portion and the ground plane are connected with the chip positioned on the side face of the substrate. The wideband ceramic anti-metal tag has the advantages that the wideband ceramic anti-metal tag is small in size; a Q value and spread bandwidth of the antenna can be decreased greatly by the aid of own special design, and the performance of the wideband ceramic anti-metal tag is superior to that of a common large-size anti-metal tag, so that the wideband ceramic anti-metal tag can be applied to many metal environments small in size and high in requirements on reading distance and bandwidth.

Description

Technical field: [0001] The invention relates to a wide-band ceramic anti-metal tag, belonging to the technical field of microwave communication, and suitable for radio frequency identification in the frequency range of 800MHz to 1GHz Background technique: [0002] With the development of RFID in recent years, more and more electronic tags are used in logistics and anti-counterfeiting fields. Ordinary flat paper labels attached to the metal surface have reduced radiation efficiency and changes in impedance and radiation pattern, resulting in a significant decrease in the reading distance of this type of label or even failure to be read. Therefore, anti-metal tags are usually required for metal environments. In recent years, ceramic anti-metal tags use high-dielectric constant ceramic materials as the substrate, which greatly reduces the size of the tag and improves the tag’s use of metal objects, especially small-sized metal parts. Usage rate. However, because the dielectric co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077
Inventor 秦津津马纪丰赵军伟
Owner BEIJING CEC HUADA ELECTRONIC DESIGN CO LTD
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