Mobile terminal and radio frequency front terminal thereof with radio frequency digital-to-analog conversion type linear transmitter

Abstract

The invention discloses a multi-standard mobile terminal. The mobile terminal comprises a baseband processor, a radio frequency front terminal transceiver, two transmitting terminal power amplifiers and a radio frequency switch, wherein the radio frequency switch is connected with an antenna; the radio frequency front terminal transceiver is respectively connected with the baseband processor and an antenna; and each transmitting terminal power amplifier is connected with the radio frequency front terminal transceiver. In addition, the invention also discloses the radio frequency front terminal transceiver with a radio frequency digital-to-analog conversion type linear transmitter. According to the mobile terminal and the radio frequency front terminal thereof with the radio frequency digital-to-analog conversion type linear transmitter, the production cost of the mobile terminal can be obviously reduced, the area of the whole chip of the mobile terminal is reduced, the strength of an output signal of a transmitter in the radio frequency front terminal transceiver can be improved, the overall performance and the market competitiveness are improved, and significant production practice significance is realized.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobile terminal suitable for various mobile communication standards and a radio frequency front end with a radio frequency digital-to-analog conversion linear transmitter. Background technique [0002] At present, with the development of smart phones and tablet computers, the business volume of global mobile data has increased significantly. Among them, the development of LTE (Long Term Evolution) technology not only improves the spectrum utilization rate of wireless communication, but also increases the data transmission rate and processable data capacity of wireless communication. [0003] At present, the wireless communication spectrum of LTE technology (frequency up to 3.8 GHz) can be divided into 43 bands, 1 to 33 bands are listed as LTE-FDD (Frequency Division Duplex), and 33 to 43 bands are listed as LTE-TDD ( time division duplex frequency band). [0004...

AI Technical Summary

Problems solved by technology

Therefore, the existing mobile terminals have more signal radio frequency input ports and more surface acoustic wave filters, resulting in higher production costs of the mobile terminal signal transceivers (ie, radio frequency front-end transceivers) and loss of mobile terminal The price competitive advantage of the mobile terminal greatly increases the overall chip area of ​​the mobile terminal. The chip area of ​​the mobile terminal is relatively large, which seriously affects the market application prospect of the mobile terminal.

Images