Multi-mode radio frequency receiving and processing chip and multi-mode terminal

Abstract

The invention provides a multi-mode radio frequency receiving and processing chip, a multi-mode terminal and a signal receiving method of the multi-mode terminal. The multi-mode radio frequency receiving and processing chip is applied to a receiving passageway of the multi-mode terminal and comprises a filtering module, a variable-frequency processing module and an amplifying module which are connected with one another in sequence, wherein the filtering module is used for receiving signals in respective modes and filtering out-of-band noise of the signal; the variable-frequency processing module is used for mixing and varying frequencies of the signals of filtering the out-of-band noise of the filtering module; and the amplifying module is used for amplifying and outputting the signal of the noise produced when the variable frequency of the variable-frequency processing module is filtered. When the multi-mode radio frequency receiving and processing chip and the multi-mode terminal including the same are adopted, the number of internal devices of the chip is effectively reduced, and occupied area of a PCB (Printed Circuit Board) is greatly reduced.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a multi-mode radio frequency receiving and processing chip, a multi-mode terminal and a method for receiving signals by the multi-mode terminal. Background technique [0002] At present, there are many different wireless communication systems in the field of telecommunications, each of which adopts its own communication standards, and the operating frequencies and operating modes of different communication standards are different. For example, the second-generation communication standard Global Mobile Communication system (Global System for Mobile Communication, GSM), and the third-generation communication standard Wideband Code Division Multiple Access (WCDMA) system that is being promoted globally. In order to enable the terminal to be used all over the world, it must support various communication standards at the same time. At present, the most commonly used terminal is a ter...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a multi-mode radio frequency receiving and processing chip, a multi-mode terminal and a method for receiving signals by the multi-mode terminal, so as to solve the defect that the existing multi-mode terminal radio frequency receiving and processing chip occupies a large PCB area

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