Harmonic suppression system

A technology of trapping and controlling ports, which is applied in the field of communication to achieve the effect of second harmonic suppression

Active Publication Date: 2014-12-31
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a harmonic suppression system, which is used to solve the problem that the existing harmonic suppression scheme cannot realize the second harmonic suppression for multiple frequency bands

Method used

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] figure 2 A schematic structural diagram of a harmonic suppression system provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the system includes: an interface connector 21, a baseband chip 22, at least two LC trap networks 23, an antenna 24, a first differential single-pole multi-throw (Single-Pole Multi-Thro...

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Abstract

The invention provides a harmonic suppression system. The harmonic suppression system comprises an interface connector, a baseband chip, an antenna, an antenna switch, at least two LC (inductance capacitance) trapped wave networks, a first differential SPMT (serial port memory technology) switch and a second differential SPMT switch, wherein the interface connector is connected with a common terminal of the first differential SPMT switch; a control port of the first differential SPMT switch is connected with a control port of the second differential SPMT; gating throwing ends of the first differential SPMT switch are respectively connected with one ends of the LC trapped wave networks correspondingly one by one; the control port of the second differential SPMT switch is connected with the baseband chip; the gating throwing ends of the second differential SPMT switch are respectively connected with the other ends of the LC trapped wave networks correspondingly; a common terminal of the second differential SPMT switch is connected with the baseband chip; the baseband chip is connected with the antenna switch; and the antenna switch is connected with the antenna.

Description

technical field [0001] The invention relates to the communication field, in particular to a harmonic suppression system. Background technique [0002] In the current trend of miniaturization of mobile broadband products, the electromagnetic environment around the antenna is becoming more and more complex, so the antenna signal is usually interfered by the second harmonic. For this reason, the signal interference caused by the second harmonic is usually suppressed by setting an LC notch network. figure 1 Schematic diagram of the structure of the existing harmonic suppression system, such as figure 1 As shown, the system includes an interface connector 11, an LC notch network 12, a baseband chip 13, an antenna switch 14 and an antenna 15, wherein the LC notch network 12 is connected between the interface connector 11 and the baseband chip 13, for To suppress the second harmonic that occurs when the working frequency band of the antenna 15 is the frequency band corresponding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/212
CPCH03J5/24H01R13/73H04B15/00
Inventor 王永超张辉董峰王亚军程岳云
Owner HUAWEI DEVICE CO LTD
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