High-efficiency rectifier constituting RFID electronic tag and rectifier units

Abstract

The invention discloses a high-efficiency rectifier constituting an RFID electronic tag and rectifier units. The high-efficiency rectifier is characterized in that the high-efficiency rectifier comprises n stages of rectifier units, the output end of the first stage of rectifier unit is connected with the input end of the second stage of rectifier unit, the output end of the second stage of rectifier unit is connected with the input end of the third stage of rectifier unit, and by analogy, the output end of the (n-1)th stage of rectifier unit is connected with the input end of the nth stage of rectifier unit; the radio frequency input ends of all the stages of rectifier units are connected; each stage of rectifier unit comprises a first bootstrap circuit, a second bootstrap circuit, a fourth rectification field-effect transistor, a fifth rectification filed-effect transistor, a DC blocking capacitor and an energy storage capacitor, the first bootstrap circuit and the second bootstrap circuit provide DC bias for a grid electrode of the fourth rectification filed-effect transistor and a grid electrode of the fifth rectification filed-effect transistor respectively, a substrate of the fourth rectification filed-effect transistor and a source electrode of the fifth rectification filed-effect transistor are connected with the output end of the rectifier unit and grounded through the energy storage capacitor. The sensitivity and the communication distance of the RFID electronic tag can be effectively improved, and the high-efficiency rectifier has good application prospects.

Description

technical field [0001] The invention relates to a rectifier, in particular to a high-efficiency rectifier and a rectification unit constituting an RFID electronic tag. Background technique [0002] RFID electronic tag is an important component widely used in wireless communication. It can be used in livestock, cold chain, transportation, access control security, identification, cargo management, automatic control, anti-theft and anti-counterfeiting and other fields. With the rapid development of RFID technology, the requirements for the sensitivity and power consumption of RFID tags are getting higher and higher, and the requirements for the cost and process of RFID are also becoming more and more stringent. The function of the rectifier in the RFID tag is to convert the RF signal received by the RFID antenna into DC power to supply power to other unit modules (such as: oscillator, reference, modulator, demodulator, digital protocol module, memory). The efficiency of the re...

AI Technical Summary

Problems solved by technology

However, these technologies will require the use of expensive process materials, or increase the complexity of the process, affecting the cost and application of RFID

Images