System architecture of wideband radio frequency front end

Abstract

The invention discloses system architecture of a wideband radio frequency front end. The system architecture comprises a wideband transceiver, a transmitting module, a receiving module and a widebandantenna; the transmitting module comprises a wideband driving power amplifier, a wideband power amplifier and a transmitting module matching circuit; the receiving module comprises a wideband low-noise amplifier and a receiving module matching circuit; the transmitting module matching circuit comprises an input matching circuit in multiple bands, an inter-stage matching circuit in multiple bands,and an output matching circuit in multiple bands; and the receiving module matching circuit comprises an input matching circuit in multiple bands and an output matching circuit in multiple bands. By combining the matching circuit in multiple bands and a channel switching function of the radio frequency switch, the wideband power amplifier and the wideband low-noise amplifier are applied to the radio frequency front end module to replace the effects of multiple power amplifiers and multiple low-noise amplifiers, the transceiving in multiple bands is realized, the design difficulty and the design cost of the radio frequency front end circuit are reduced, and the integration level of the circuit is improved.

Description

technical field [0001] The present invention relates to the field of radio frequency front-ends, in particular to a system architecture of wideband radio frequency front-ends. Background technique [0002] At present, multiple modes and multiple frequency bands coexist in the mobile communication system. The market hopes that a single mobile terminal can support different communication protocols and frequency bands. At the same time, in order to reduce the cost of the whole machine, the system integration level is constantly improving. With the rapid development of integrated circuits, RF front-end modules are also developing in the direction of miniaturization, broadband and high frequency, and their performance is directly related to the communication quality of the entire communication system. [0003] The RF front-end module plays two important roles in wireless communication at the same time. It converts binary signals into high-frequency wireless electromagnetic wave s...

AI Technical Summary

Problems solved by technology

[0005] The traditional RF front-end circuit uses multiple drive power amplifiers, power amplifiers, and low-noise amplifiers, combined with the switching channel function of the RF switch, to achieve multi-band transmission and reception, which undoubtedly increases the complexity of the RF front-end circuit and improves the system. Overall design difficulty and cost

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