Anti-harmonic interference device of carrier aggregation, antenna device and mobile terminal

Abstract

The present invention discloses an anti-harmonic interference device of carrier aggregation, an antenna device and a mobile terminal. The anti-harmonic interference device comprises a power amplifier, a switching unit, a control unit, a first diplexer and a second diplexer. The first diplexer and the second diplexer are connected with accesses of a first frequency band and a second frequency band respectively, the frequency of a downlink signal of the first frequency band and the frequency of a secondary harmonic of an uplink signal of the second frequency band are overlapped, and the switching unit is connected with the control unit. When the first frequency band is used as a slave cell frequency band, and the second frequency band is used as a master cell frequency band, the switching unit switches an interface for outputting the first frequency band in the power amplifier to be connected with a harmonic consumption end used for consuming the secondary harmonic, otherwise, the switching unit switches the interface for outputting the first frequency band in the power amplifier to be connected with the first diplexer. According to the scheme of the present invention, the simple structure and the low cost are realized while the harmonic interference in the carrier aggregation is eliminated.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a carrier aggregation anti-harmonic interference device, an antenna device and a mobile terminal. Background technique [0002] In order to meet the requirements of single-user peak rate and system capacity improvement, one of the most direct methods is to increase the system transmission bandwidth. Carrier aggregation (CA, Carrier Aggregation) can effectively increase the system transmission bandwidth. In carrier aggregation, two or more carriers receive data at the same time, one TX transmits (primary cell, pcell), and multiple RX receives (primary cell&second cell, scell), In this way, the throughput can be doubled and the user's online experience is improved. [0003] In carrier aggregation, the combination of low frequency and intermediate frequency is mainly selected, especially the CA combination of B3+B8. Commercial applications of carrier aggregation base...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a carrier aggregation anti-harmonic interference device, an antenna device and a mobile terminal to solve the problem of large volume and high cost of eliminating harmonic interference by carrier aggregation in the prior art

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