Low power consumption architecture system of ultra-high frequency passive RFID digital baseband

Abstract

The invention discloses a low power consumption architecture system of an ultra-high frequency passive RFID digital baseband. The system comprises a radio frequency analog front end, a digital baseband processor part and a memorizer; the radio frequency analog front end is mainly used for converting AC radio frequency energy received by an antenna into DC energy available for other circuits of a label through a rectifying circuit, recovering data transmitted by a reader from the received radio frequency through a detection circuit, and producing a clock signal for driving the work of the digital baseband processor part through a clock production circuit, and modulating and sending the signal returned by the label; the protocol processing is performed through the main load of the digital baseband processor part; and the memorizer is used for memorizing related useful information. Through the improvement, the structure can effectively and uniformly distribute the power consumption of theelectronic label to the whole work time by combining with a power supply management mechanism including a gated clock, thereby reducing the maximum instant power consumption.

Description

technical field [0001] The invention relates to the field of wireless communication corresponding to low power consumption in the Internet of Things, and specifically belongs to a low power consumption technology of a digital baseband part in a radio frequency identification system. Background technique [0002] Radio frequency identification technology is a wireless communication technology that uses radio frequency signals to achieve non-contact information transmission through spatial coupling (alternating magnetic field or electromagnetic field), and achieves multi-target identification and moving target identification through the transmitted information. This technology has many advantages such as anti-harsh environment, high accuracy, security, flexibility and scalability; it is convenient to realize item tracking and logistics management through the Internet; it can be widely used in railway wagon identification, automatic highway toll collection, and air baggage handl...

AI Technical Summary

Problems solved by technology

Among them, the utilization rate of power supply energy has the largest influence factor, but it is generally difficult to improve the utilization rate; the power consumption of digital baseband is relatively large, accounting for about 50% of the power consumption after rectification; the RF analog front end and memory (EEPROM) Equivalent power consumption, each accounting for 25% of rectified power consumption

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