Carrier aggregation radio-frequency circuit and communication terminal

Abstract

The invention provides a carrier aggregation radio-frequency circuit comprising a radio frequency transceiver, a first front-end network, a second front-end network, a first antenna and a second antenna. The first antenna is connected with the radio frequency transceiver electrically by the first front-end network to form a first receiving-transmitting access. The second antenna is connected with the radio frequency transceiver electrically by the second front-end network to form a second receiving-transmitting access. The first receiving-transmitting access and the second receiving-transmitting access are used for realizing carrier aggregation of a first frequency band and a second frequency band and are used for carrier aggregation of a third frequency band and a fourth frequency band. Ina addition, the invention also provides a communication terminal using the carrier aggregation radio-frequency circuit. With the carrier aggregation radio-frequency circuit, carrier aggregation of multiple frequency bands can be realized, thereby improving the communication bandwidth of the communication terminal.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a carrier aggregation radio frequency circuit and a communication terminal using the carrier aggregation radio frequency circuit. Background technique [0002] In order to meet the explosive growth of data services and user perception requirements when users use new services, broadband networks for mobile communications need to evolve continuously. Using carrier aggregation to obtain wider communication bandwidth is the most effective way to improve the throughput of mobile communication network. The improvement of carrier aggregation to user perception and network capacity based on user perception has been verified by a mature Long Term Evolution (LTE) network, and almost all leading LTE operators are actively deploying carrier aggregation to minimize limited Spectrum resource aggregation is used to obtain higher network throughput. [0003] The LTE standard mainl...

AI Technical Summary

Problems solved by technology

However, the problem with the above-mentioned solution using a quadruplexer is that the frequency band interval between 1710-1785MHz and 1805-1880MHz of the B3 frequency band and 1920-1980MHz and 2110-2170MHz of the B1 frequency band, that is, the duplex interval is only 20MHz, while The bandwidth of the B3 frequency band reaches 75MHz, resulting in a high index of the quadruplexer and high production costs; and the use of the quadruplexer will have the problem of excessive insertion loss, and the power amplifier needs to output more power to compensate for the quadruplexer. The insertion loss makes the communication terminal transmit more power and consume more power

In addition, when the communication terminal is in the non-carrier aggregation state, the power amplifier still outputs a relatively large transmit power, resulting in waste of power consumption

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