Transmitting circuit for super high frequency radio frequency recognition read-write machine to reduce power consumption

Abstract

An emitting circuit of the hyper-high-frequency radio frequency recognizing read-write machine pertains to the hyper-high-frequency radio frequency recognizing read-write machine technique field, which is characterized by containing a baseband control module, an up-conversion module and a power amplification module. The power amplification module is under the control of the baseband control module at a non-linearity operating status, emits a single frequency banner carrier signal to the radio frequency label, and provides energy required by the work to the radio frequency label; after the single-chip receives the radio frequency answer, the power amplification module is at the linearity operating status, and the single-chip transmits instructions to the radio frequency label by the up converter and the power amplifier. The power consumption of the invention is lower than the power consumption of the general emitting circuit using single linear power amplifier.

Description

technical field [0001] The invention relates to a realization scheme of a transmission path of an ultra-high frequency radio frequency identification reader-writer in the radio frequency identification technology in the communication field, in particular a design scheme for reducing power consumption of an ultra-high frequency radio frequency identification reader-writer. Background technique [0002] RFID (Radio Frequency Identification) technology in the field of communication is an automatic item identification technology that uses radio frequency for long-distance communication to identify items. RFID has the characteristics of large amount of stored data, high security, strong penetrating power, long recognition distance, fast recognition speed, long service life, readable and writable, strong environmental adaptability, waterproof and antimagnetic, etc. At the same time, due to the high cost and high technical content of the chip itself, the chip itself has an anti-cou...

AI Technical Summary

Problems solved by technology

[0005] In order to enable passive tags to recover the power required for work within a certain range, the reader must have a certain transmission power, so a power amplifier is used inside the reader to increase the output power; in order to prevent the reader from being affected when it is working For the work of other communication equipment, the emission spectrum of the reader must meet the requirements of the spectrum specification, so the power amplifier in the reader uses a linear power amplifier with low efficiency

This increases the power consumption of the reader under the same transmission power, which is not conducive to the realization of low-power portable readers

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