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Circuit for expanding bandwidth of coupler and mobile communication equipment

A coupler and circuit technology, applied in electrical components, impedance networks, etc., can solve problems such as no more effective solutions, and achieve the effect of expanding bandwidth and eliminating return loss deterioration.

Pending Publication Date: 2021-07-16
ANHUI TATFOOK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no effective solution to this problem

Method used

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  • Circuit for expanding bandwidth of coupler and mobile communication equipment
  • Circuit for expanding bandwidth of coupler and mobile communication equipment
  • Circuit for expanding bandwidth of coupler and mobile communication equipment

Examples

Experimental program
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Embodiment approach

[0031] See Figure 4 , Figure 4 It is a structural diagram of an RC circuit provided by an embodiment of the present invention. As a preferred implementation manner, the RC circuit includes a first resistor R1 and a first capacitor C1;

[0032] Wherein, the second end of the first resistor R1 is connected to the first end of the first capacitor C1, and the second end of the first capacitor C1 is grounded;

[0033] Correspondingly, the first terminal of the first resistor R1 is the input terminal of the RC circuit, and the first terminal of the first capacitor C1 is the output terminal of the RC circuit.

[0034] In this embodiment, a specific implementation manner of an RC circuit is provided. For details, please refer to image 3 , image 3 A structural diagram of an RC circuit provided by an embodiment of the present invention, in the RC circuit, a resistor and a capacitor are used to form the RC circuit. Obviously, when the RC circuit is set in such a structural form,...

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Abstract

The invention discloses a circuit for expanding the bandwidth of a coupler. The circuit comprises a first bridge, a second bridge, a first filter circuit and a second filter circuit, wherein the input end of the first bridge is connected with the output end of the target coupler, the output end of the first bridge is respectively connected with the input end of the first filter circuit and the input end of the second filter circuit, and the output end of the first filter circuit and the output end of the second filter circuit are respectively connected with the input end of the second bridge. Therefore, the bandwidth of the target coupler can be expanded by using the first filter circuit and the second filter circuit, and return loss in the whole circuit can be eliminated through a balance circuit formed by the first bridge and the second bridge. Obviously, through the circuit, the bandwidth of the target coupler can be expanded, and the problem that return loss in the circuit where the target coupler is located becomes poor can be solved. Correspondingly, the mobile communication equipment provided by the invention also has the above beneficial effects.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a circuit for expanding the bandwidth of a coupler and a mobile communication device. Background technique [0002] In the field of mobile communication, a coupler is generally used to couple the radio frequency signal with a certain degree of coupling, so as to observe or measure the main signal. Wherein, the coupling bandwidth of the coupler refers to the frequency width within a certain coupling degree error range. For example: in the frequency range of xHz±ΔxHz, the coupling degree is ydB±ΔydB; where Hz is the unit of frequency, dB is the unit of S parameter, and x, y, Δx and Δy are assumed values. If you want to increase the coupling bandwidth, that is, increase Δx while Δy remains unchanged, in general, you need to add a filter circuit, and use the amplitude-frequency characteristics of the filter circuit to change the amplitude-frequency characteristics of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H9/52
CPCH03H9/52
Inventor 赵修茂
Owner ANHUI TATFOOK TECH CO LTD