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A transceiver module for communication base station

A technology for transceiver modules and communication base stations, applied in wireless communication, electrical components, transmission systems, etc., can solve problems such as difficulty in automatic calibration of system frequencies, adverse effects of daily work of base stations, poor work reliability, etc., to avoid receiving DC offset effects, Conducive to automatic calibration and increased reliability

Inactive Publication Date: 2016-06-15
SHENYANG ZHONGKE MICROELECTRONICS
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  • Description
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AI Technical Summary

Problems solved by technology

The automatic calibration of the system frequency of the existing transceiver module for the base station is difficult and the work reliability is poor, which adversely affects the daily work of the base station

Method used

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  • A transceiver module for communication base station

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Embodiment Construction

[0019] As shown in the figure, the present invention includes a receiving link, a transmitting link, and a local oscillator generating circuit. The main points of the structure are that the receiving link undergoes two frequency conversions, and the radio frequency signal is down-converted to an intermediate frequency signal, and then the intermediate frequency signal is decomposed. The analog baseband signal is generated by modulation; the local oscillator generating circuit includes two frequency synthesizers 25,27 and a single sideband mixer 26; two frequency synthesizers 25,27 provide the frequency conversion twice for the receiving link For the local oscillator signal, the two frequency synthesizers 25 and 27 provide the local oscillator signal for the transmission link after frequency summing by the single sideband mixer 26 .

[0020] The gain adjustment in the receiving chain adopts intermediate frequency variable gain amplifiers 9 and 11 and analog baseband variable...

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Abstract

A transceiver module for a communication base station belongs to a transceiver, that is, a transmitter and a receiver form a structural whole, and at least a part of it is used as a device group for transmitting and receiving functions. Technical field, especially relates to a communication The transceiver module of the base station. The invention provides a transceiver module for a communication base station which is beneficial to the automatic calibration of the system frequency and works reliably. The invention includes a receiving link, a transmitting link and a local oscillator generating circuit. The main points of the structure are that the receiving link undergoes two frequency conversions, the radio frequency signal is down-converted to an intermediate frequency signal, and then the intermediate frequency signal is demodulated to generate an analog baseband signal. ; The local oscillator generation circuit includes two frequency synthesizers and SSB mixers; the two frequency synthesizers provide local oscillator signals for the two frequency conversions of the receiving link respectively, and the two frequency synthesizers pass the unilateral After frequency addition with a mixer, a local oscillator signal is provided for the transmitting link.

Description

technical field [0001] According to the International Patent Classification (IPC), the present invention belongs to the Department of Electrical Engineering, the major category of telecommunication technology, the minor category of transmission, the major group of devices connected to users through radio links or inductive links, and dual-purpose transceivers, that is, transmitters and The receiver forms a structural whole, and at least a part of it is used as a device group for transmitting and receiving functions. Technical field, especially relates to a transceiver module for a communication base station. Background technique [0002] According to relevant analysis, the demand for mobile communication data traffic is developing rapidly at a rate of 100 times every 6-7 years. By 2010, more than 60% of mobile phones have the function of PDA connected to the wireless local area network, and more than 40% of PDAs have the function of mobile phone connected to the mobile commu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04W88/08
Inventor 张海英
Owner SHENYANG ZHONGKE MICROELECTRONICS
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