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

A technology of harmonic interference and carrier aggregation, applied in transmission noise suppression, electrical components, transmission systems, etc., can solve the problems of high cost and large size of power amplifier, and achieve the effect of simple structure, elimination of harmonic interference, and low cost

Active Publication Date: 2016-10-12
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this implementation requires an additional power amplifier, and the power amplifier is large in size and high in cost.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] image 3 It is a schematic structural diagram of an anti-harmonic interference device for carrier aggregation provided in Embodiment 1 of the present invention. Such as image 3 As shown, the anti-harmonic interference device includes: a power amplifier 20 , a first filtering unit 30 , a first duplexer 40 and a second duplexer 50 .

[0026] The sending terminal 41 of the first duplexer 40 is connected with the first uplink interface 21 that sends the uplink signal of the first frequency band in the power amplifier 20, and the receiving terminal is used to send the downlink signal of the first frequency band to the wireless transceiver; the antenna terminal is used for The signal transmission of the first frequency band signal is performed with the antenna.

[0027] The sending terminal 51 of the second duplexer 50 is connected to the second uplink interface 22 that sends the uplink signal of the second frequency band in the power amplifier 20 through the first filteri...

Embodiment 2

[0038] Figure 5 It is a schematic diagram of a working process of a carrier aggregation anti-harmonic interference device provided by Embodiment 2 of the present invention. Such as Figure 5 As shown, the anti-harmonic interference device includes: a power amplifier 20 , a first filtering unit 30 , a first duplexer 40 , a second duplexer 50 , a third duplexer 80 and a second filtering unit 90 .

[0039] The sending terminal 81 of the third duplexer 80 is connected to the third uplink interface 23 that sends the uplink signal of the third frequency band in the power amplifier 20 through the second filtering unit 90, and the receiving terminal 82 is used to send the third frequency band to the wireless transceiver 10 the downlink signal; the antenna terminal 83 is used for signal transmission of the third frequency band signal with the antenna 70 .

[0040] The frequency of the harmonics of the uplink signal in the first frequency band overlaps with the frequency of the downlin...

Embodiment 3

[0048] An embodiment of the present invention provides an antenna device, Figure 6 It is a schematic structural diagram of an antenna device provided in Embodiment 3 of the present invention, refer to Figure 6 , the antenna device includes the anti-harmonic interference device 100 described in any embodiment of the present invention, a wireless transceiver 10 and an antenna 70 .

[0049] The wireless transceiver 10 includes multiple downlink interfaces for receiving downlink signals of multiple frequency bands, and the multiple downlink interfaces are connected to receiving terminals of corresponding duplexers in the anti-harmonic interference device 100 . The antenna 70 is connected to antenna terminals of a plurality of duplexers of the anti-harmonic interference device 100 .

[0050] Exemplary, refer to Figure 6 , the wireless transceiver 10 is used to send and receive signals of different frequency bands, and has a corresponding uplink interface and downlink interface...

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Abstract

The embodiment of the invention discloses an anti-harmonic interference device for carrier aggregation, an antenna device and a mobile terminal. The anti-harmonic interference device comprises a first duplexer of which the sending terminal is connected with a first uplink interface in a power amplifier, wherein the first uplink interface is used for sending uplink signals in a first band, and the receiving terminal of the first duplexer is used for sending downlink signals in the first band to a wireless transceiver; a second duplexer of which the sending terminal is connected with a second uplink interface in the power amplifier through a first filtering unit, wherein the second uplink interface is used for sending the uplink signals in a second band, and the receiving terminal of the second duplexer is used for sending the downlink signals in the second band to the wireless transceiver, and there is overlap between the frequency of the harmonics of the uplink signals in the first band and the frequency of the downlink signals in the second band; and the first filtering unit which is used for filtering the part in the harmonics of the uplink signals in the first band overlapping with the frequency of the downlink signals in the second band. According to the embodiment of the devices and the mobile terminal, the scheme for eliminating carrier aggregation harmonic interferences is small in size and low in cost.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of carrier aggregation, and 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 is widely used because it can effectively increase system transmission bandwidth. [0003] Such as figure 1 As shown, in some current carrier aggregation frequency band combinations, the harmonic frequency of the uplink signal in the low frequency band overlaps with the downlink signal frequency band in the mid-high frequency band. The low-frequency band and the mid-high frequency band share an MMPA (Multi-band Multi-mode Power Amplifier, multi-band multi-mode power amplifier). Since the interfaces connected to each frequen...

Claims

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Application Information

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IPC IPC(8): H04B15/00
CPCH04B15/00
Inventor 张福
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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