Communication radio frequency front-end module and communication radio frequency front-end communication method

Abstract

The invention provides a communication radio frequency front-end module and a communication radio frequency front-end communication method. The communication radio frequency front-end module comprises an antenna switch for switching transmission links, a diplexer for supporting multi-band frequency signal transmission, a power amplifier for transmitting output signals of a transmitter to the diplexer, and a low-noise amplifier for transmitting input signals to receiver. By regulating an impedance balance network, the communication radio frequency front-end module is arranged to a corresponding frequency range; the antenna receives signals of the corresponding frequency range, and the signals are transmitted to the low-noise amplifier by the diplexer in a differential mode signal form; the transmitter sends signals which are amplified by the power amplifier and then transmitted to the diplexer and then the antenna, at the same time, the diplexer transmits output signals to the low-noise amplifier in a common mode signal form, and the low-noise amplifier eliminates the common mode signals to achieve the isolation effect. The number of devices required by the radio frequency front end is effectively reduced, and requirements for supporting multiple communication radio frequency ranges, achieving small noise coefficients and according with practical application are met.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a communication radio frequency front-end module and a communication method. Background technique [0002] FDD (Frequency Division Duplexing, also known as full duplex) is a kind of full duplex communication technology used in mobile communication systems, corresponding to TDD (Time Division Duplexing, time division duplex). FDD uplink and downlink data are transmitted at the same time, and two independent channels are required for operation. One channel is used to transmit information downwards and the other channel is used to transmit information upwards. A guard band exists between the two channels to prevent mutual interference between adjacent transmitters and receivers. The system working in FDD mode is a continuous control system, which is suitable for national and international coverage roaming in a large area system, and is suitable for symmetrical services, such as...

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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a communication radio frequency front-end module and a communication method, which are used to solve the problems of the large number and complex structure of the communication radio frequency front-end devices in the prior art

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