Wirelessly chargeable RFID electronic tag

Abstract

The invention relates to a wirelessly chargeable RFID electronic tag, comprising a signal receiving antenna, a signal processing module, an energy receiving antenna, a rectifying circuit module and an energy storage capacitor, wherein the rectifying circuit module comprises a low pass filter, a matching circuit, a rectifier diode and a direct-pass filter, wherein one end of the low pass filter is directly connected with the energy receiving antenna and the other end is connected with the matching circuit; the matching circuit is connected with the direct-pass filter via the rectifier diode, the other end of the direct-pass filter is directly connected with the energy storage capacitor, the other end of the energy storage capacitor is directly connected with the signal processing module, and the signal processing module is connected with the signal receiving antenna. The RFID electronic tag capable of being charged in a wireless mode has the following benefits that the advantages of an active RFID such as long recognition distance, large transmission data amount, low emission power and high compatibility and the like are reserved, and the problem that the service life of the existing active RFID electronic tag depends on the service life of cells is eliminated. The wirelessly chargeable RFID electronic tag has wide application prospect.

Description

technical field [0001] The invention relates to the technical field of RFID, in particular to an RFID electronic tag. Background technique [0002] Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology, which can automatically identify targets and obtain required data through radio frequency signals. RFID electronic tag is the core of radio frequency identification technology and the real data carrier of radio frequency identification system. [0003] RFID electronic tags are divided into passive RFID electronic tags and active RFID electronic tags. At present, the mainstream RFID electronic tags on the market are passive RFID electronic tags. [0004] There is no battery on the passive RFID electronic tag, and all the power required for its work is obtained by converting the received RF energy sent by the reader. The specific working methods are divided into two cases: for high-frequency RFID, based on inductance Coupling t...

AI Technical Summary

Problems solved by technology

Although active RFID electronic tags overcome the shortcomings of passive RFID electronic tags, active RFID electronic tags are generally thicker after being packaged into cards because of their own power supply; the price of active RFID electronic tags is more expensive than passive tags; At the same time, the life of the active tag depends on the battery, generally about 1 to 2 years

It is precisely because of these deficiencies that the development of active RFID technology is relatively lagging behind.

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