Radio transceiver

Abstract

The invention relates to the communication technology field, more particularly to a radio transceiver that is compatible with a TD-LTE frequency range of 2.3 to 2.4 GHz and is oriented to an IMT-Advanced frequency range of 3.4 to 3.6 GHz. The radio transceiver comprises: an antenna module, which is used for receiving and transmitting a signal; a switch, which is used for completing switching between a transmitting link and a reception link; a frequency synthesizer, which is used for providing a local oscillator signal; the reception link, which is used for dividing a received radio frequency signal into two paths of signals, carrying out mixing respectively on the two paths of signals and the local oscillator signal provided by the frequency synthesizer, carrying out down conversion processing and then providing the processed signals for a base band to carry out digital signal processing; the transmitting link, which is used for carrying out mixing on two paths of base band signals and the local oscillator signal provided by the frequency synthesizer, carrying out up conversion processing, generating two paths of emitted radio frequency signals that are combined into one path of signal and then carrying out power amplification. According to the invention, receiving and sending of wireless signals can be realized; and control on a gain, frequency, a bandwidth, time division multiplex, and transmitting power is contained.

Description

technical field [0001] The invention relates to a wireless transceiver applied to the fourth-generation mobile communication IMT-Advanced, in particular to a wireless transceiver compatible with the TD-LTE 2.3-2.4GHz frequency band and facing the IMT-Advanced 3.4-3.6GHz frequency band. 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 will have the function of PDA connected to wireless local area network, and more than 40% of PDA will have the function of mobile phone connected to mobile communication network. The data business volume of the mobile communication network will reach more than 80%. It is estimated that in 2015, the demand for mobile data traffic will reach 100-1000 times of the current one. In the past 20 years, ITU has been committed to coordinating the forces of governments, industries and private...

AI Technical Summary

Problems solved by technology

However, there is currently no RF front-end chip for IMT-Advanced technology in the world, and it is impossible to conduct comprehensive and effective verification and evaluation of relevant key technologies proposed by various countries or organizations, which is not conducive to the effective development of standardization work.

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