An antenna of book electronic certificate read-write device

Abstract

This invention discloses an antenna of a book electronic certificate read-write device composed of an upper antenna conductor loop, an upper antenna conductor loop, an impedance match network connected with them, a RF connector connected with the impedance match network, a lower antenna base board and an upper antenna base board, in which, a metal antenna coil starts from the RF connector to circle around one or many times to come back to the connector again, and the impedance match network part is composed of resistors and capacitors, which can read non-contacted IC chips of multiple regions in certificates at the same time and avoids interference among antennas.

Description

technical field [0001] The invention relates to the field of non-contact integrated circuit card reading and writing equipment, in particular to an antenna of the type electronic document reading and writing equipment. Background technique [0002] Traditional certificates generally contain image information such as a photo of the holder and text information such as name and identity, and are usually machine-readable by an OCR reader. With the development and popularization of non-contact integrated circuit card technology, people began to add non-contact integrated circuit chips to traditional certificates in order to enhance the security, reusability and scalability of this certificate, which constitutes a cost electronic certificate. According to the current status of this type of electronic certificate in circulation on the market, the non-contact integrated circuit chip inside this type of electronic certificate may be on each of the different pages of this type of ele...

AI Technical Summary

Problems solved by technology

[0005] To sum up, the shortcoming of the existing technology is that two antennas must be used to ensure that the automatic reading and writing of the internal electronic information can be completed once the electronic certificate is placed.

Otherwise, it is necessary to place this type of electronic certificate multiple times, which is not only too cumbersome but also reduces efficiency. However, this technical solution using two antennas has the difficulty of circuit design and high cost of the radio frequency control module, and the reading and writing speed is slow. , There are disadvantages such as mutual interference between the two antennas, increased output energy loss, and decreased success rate of reading and writing.

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