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Ultra wide band reconfigurable receiving and transmitting front end and a signal receiving and transmitting method

An ultra-wideband, baseband signal technology, applied in the field of communication, can solve the problem of unable to realize the reconfiguration of the instantaneous bandwidth technical indicators of the frequency conversion architecture, and achieve the effect of realizing loop self-calibration and self-checking, and realizing reconfiguration.

Active Publication Date: 2019-05-24
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

Especially for broadband applications in the microwave frequency band, these frequency converters usually adopt multi-stage frequency conversion in the form of superheterodyne. The frequency conversion scheme and technical indicators are fixed, and it is impossible to realize reconfigurable functions and technical indicators such as frequency conversion architecture and instantaneous bandwidth.

Method used

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  • Ultra wide band reconfigurable receiving and transmitting front end and a signal receiving and transmitting method
  • Ultra wide band reconfigurable receiving and transmitting front end and a signal receiving and transmitting method
  • Ultra wide band reconfigurable receiving and transmitting front end and a signal receiving and transmitting method

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] An ultra-wideband reconfigurable transceiver front-end, which includes a reconfigurable frequency converter 1, a reconfigurable intermediate frequency link 2, a reconfigurable zero-IF transceiver 3, the first port 1-1 of the reconfigurable frequency converter 1 and External RF signal connection, the second port 1-2 is used to receive the first local oscillator input signal, the third port 1-3 is connected to the first port 2-1 of the reconfigurable IF link 2, reconfigurable zero-IF transceiver The first port 3-1 of the transmitter 3 is connected to the second port 2-2 of the reconfigurable intermediate frequency link 2, and the second port 3-2 of the reconfigurable zero-IF transceiver 3 is used to receive the second local oscillator input signal , the third port 3-3 is used to output the baseband signal to the outside, and the fourth port 3-4 is used t...

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Abstract

The invention discloses an ultra wide band reconfigurable receiving and transmitting front end and a signal receiving and transmitting method, and belongs to the technical field of communication. Thetransmitting-receiving front end comprises a reconfigurable frequency converter. According to the reconfigurable intermediate frequency link and the reconfigurable zero intermediate frequency transceiver, a superheterodyne frequency conversion scheme is combined with a zero intermediate frequency conversion scheme, a two-way amplifier, a reconfigurable band-pass filter, a reconfigurable low-pass amplifier, a numerical control attenuator and a variable gain amplifier are adopted, and a zero intermediate frequency receiving and transmitting self-closed loop technology is combined, so that 3GHz-can be realized; And transmitting and receiving conversion from the 18GHz radio frequency signal to the baseband signal. Functional reconstruction of receiving and transmitting, frequency conversion architecture and the like and reconstruction of technical indexes of gain, instantaneous bandwidth and the like are achieved, and the method is particularly suitable for being used in software radio andcognitive wireless receiving and transmitting systems in the communication field.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an ultra-wideband reconfigurable transceiver front end and a signal transceiver method. Background technique [0002] As a key component of the communication system, the receiving front-end mainly converts the radio frequency signal of a specific frequency into a baseband signal for digital-to-analog conversion, while the transmitting front-end mainly converts the analog baseband signal obtained by analog-to-digital conversion into a radio frequency signal of a specific frequency for transmission. [0003] At present, for different communication standards, signal frequency bands and signal characteristics, it is necessary to use dedicated up and down converters to convert between radio frequency signals and baseband signals. Especially for broadband applications in the microwave frequency band, these frequency converters usually adopt multi-stage frequency conversion in th...

Claims

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Application Information

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IPC IPC(8): H04B1/00H04B1/401
Inventor 王璇宋庆辉郑见树
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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