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Ultrahigh frequency radio frequency identification (UHF RFID) reader-writer transmitter framework based power modulation mode

A technology of power modulation and radio frequency identification, applied in the electronic field, can solve the problems of complex structure and high power consumption, and achieve the effect of low integration, low power consumption and simple structure

Active Publication Date: 2016-08-24
复亚智能技术发展(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the structure is more complex and the power consumption is higher

Method used

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  • Ultrahigh frequency radio frequency identification (UHF RFID) reader-writer transmitter framework based power modulation mode
  • Ultrahigh frequency radio frequency identification (UHF RFID) reader-writer transmitter framework based power modulation mode

Examples

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Embodiment 1

[0021] The transmission signal of the UHF RFID reader generally adopts the OOK or ASK modulation method, that is, the signal expresses the instruction information through the amplitude modulation. Inverse amplitude modulation PR-ASK three modes. Among them, SSB-ASK occupies less general spectrum bandwidth than DSB-ASK. Therefore, it can have a faster rate of transmitting command signals under the same spectrum bandwidth. However, for portable, miniaturized, and mobile UHF RFID reader-writer applications, it is not important whether all three transmission signal modulation methods can be supported, but simple structure, low power consumption, and low cost are more important.

[0022] Therefore, the present invention only adopts the DSB-ASK modulation mode to realize the advantages of simple structure, low power consumption and low cost. The specific methods are as follows:

[0023] see figure 1 , the present invention includes a power modulation module and a power amplifier,...

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Abstract

The invention relates to the technical field of electronics, specifically to an UHF RFID reader-writer transmitter framework based power modulation modes. The UHF RFID reader-writer transmitter framework comprises a power modulation module and a power amplifier, and is characterized in that an input baseband signal as an input signal is connected with the port 1 of the power modulation module, a power supply as power supply voltage is connected with the port 2 of the power modulation module, the port 3 of the power modulation module is connected with the port 2 of the power amplifier, the output signal of the port 3 of the power modulation module serves as power supply voltage of the power amplifier, an input carrier signal as an input signal is connected with the port 1 of the power amplifier, and the port 3 of the power amplifier outputs output emission signals. Compared with the prior art, the UHF RFID reader-writer transmitter framework is simple in structure, and low in power dissipation, integration level and cost, and is more suitable for portable, small and mobile UHF RFID reader-writer systems.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a transmitter architecture of an ultra-high frequency radio frequency identification reader-writer based on a power modulation mode. Background technique [0002] UHF radio frequency identification system can be widely used in warehouse management, logistics management, intelligent manufacturing, electronic license plate, anti-counterfeiting traceability, book management, material control, electronic bills and other application fields. It is one of the key core technologies of the Internet of Things. [0003] UHF RFID system consists of two parts: UHF RFID reader and UHF RFID tag. The UHF RFID reader-writer transmits a continuous carrier signal to the tag to transmit wireless energy to the tag. The tag is activated after receiving the continuous carrier signal, and then the UHF RFID reader-writer sends a command signal to the tag. Under the control of the UHF RFID reader, th...

Claims

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Application Information

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IPC IPC(8): H04L27/04
CPCH04L27/04
Inventor 陈佳建
Owner 复亚智能技术发展(江苏)有限公司
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