Time division-long term evolution (TD-LTE)/time division-synchronous code division multiple access (TD-SCDMA) radio-frequency front transmitter-receiver system

Abstract

The invention relates to a time division-long term evolution (TD-LTE) / time division-synchronous code division multiple access (TD-SCDMA) radio-frequency front transmitter-receiver system, which is characterized in that one output of a radio-frequency front circuit is connected with a baseband processor, the other output of the radio-frequency front circuit is connected with a signal input end of a single-pole four-throw switch respectively through a first power amplifier and a second power amplifier, one input end of the radio-frequency front circuit is connected with a signal output end of the single-pole four-throw switch and a second antenna, the other input end of the radio-frequency front circuit is connected with the baseband processor, and the single-pole four-throw switch is connected with a first antenna. The radio-frequency front circuit comprises a receiver, a transmitter and a frequency synthesizer, wherein the signal input end of the receiver is respectively connected with the signal output end of the single-pole four-throw switch, the second antenna and the output end of the frequency synthesizer, and the signal output end of the receiver is connected with the baseband processor; and the signal input end of the transmitter is connected with the baseband processor and the frequency synthesizer, and the signal output end of the transmitter is connected with the signal input end of the single-pole four-throw switch respectively through the first power amplifier and the second power amplifier. Due to the adoption of the TD-LTE / TD-SCDMA radio-frequency front receiver-transmitter system, the system complexity is reduced, the system cost is reduced, and the performance is improved.

Description

technical field [0001] The invention relates to a radio frequency front-end transceiver. In particular, it relates to a TD-LTE / TD-SCDMA radio frequency front-end transceiver system with low design cost and optimized performance. Background technique [0002] With the development of smart phones and tablets, the traffic volume of mobile data has increased significantly. LTE (Long Term Evolution) improves spectrum utilization, increases transmission rate and capacity of data that can be processed. The success of LTE technology depends on the development of the ecosystem in which it exists, and transceiver technology must evolve at the same or faster rate than the infrastructure implementation is in place. [0003] Due to the expected explosive growth of data usage, operators must effectively use spectrum resources and implement LTE technology with a large number of frequency bands as soon as possible. This is a transceiver design challenge. The 3rd Generation Partnership P...

AI Technical Summary

Problems solved by technology

Current TD-SCDMA technical problems such as power consumption and performance cannot be launched and promoted on a large scale, because the design is not specific and detailed enough, and the performance of the chip is sacrificed due to the one-sided pursuit of multiple standards.

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