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Small directional coupler

A technology of directional coupler and coupling line, which is applied in the direction of waveguide devices, electrical components, connecting devices, etc., can solve the problems that it is difficult to meet the requirements of small size, the lateral size of directional coupler is large, and the space occupied is large, so as to achieve good The effect of electrical performance, small lateral width, and high precision

Inactive Publication Date: 2015-10-14
胡雨思
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the microstrip circuit board adopts a matrix structure, relatively, in order to adapt to the size of the microstrip circuit board, the size of the dielectric board and the floor needs to be increased, resulting in a larger lateral dimension of the directional coupler. Large, takes up a lot of space, it is difficult to meet the requirements of small size, and the accuracy is poor, and it is difficult to accurately achieve the indicators that some directional couplers need to achieve

Method used

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  • Small directional coupler
  • Small directional coupler
  • Small directional coupler

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 2 As shown, a miniaturized directional coupler described in this embodiment includes a signal line and a coupling line and an insulating body 1 for fixing the signal line and the coupling line; the insulating body 1 has a built-in coupling cavity 12, the The signal line and the coupling line are arranged in the coupling cavity 12; in the miniaturized directional coupler described in this embodiment, the signal line includes a first line strip 21, and one end of the first line strip 21 extends outward There is a signal input part 24, the side of the first line strip 21 extends vertically to the side of the coupling line with a second line strip 22, and the edge of the second line strip 22 near the coupling line is provided with a zigzag structure; One side of the strip 21 near the coupling line is provided with a plurality of first protrusions 23 side by side, the first protrusions 23 are cylindrical, and the top of the first protrusions 23 is...

Embodiment 2

[0034] Such as image 3 In the miniaturized directional coupler described in this embodiment, the thickness of the first strip 21 and the second strip 22 is D=0.7-1.5mm. In the miniaturized directional coupler described in this embodiment, the lengths of the first strip 21 and the second strip 22 are L=8-10cm. In the miniaturized directional coupler described in this embodiment, the sawtooth angle of the sawtooth structure of the first strip 21 and the second strip 22 is 60 degrees. Under this size, through calculation software simulation, it is known that its various data are excellent, especially the coupling coefficient, reflection coefficient and isolation, such as Figure 4 to Figure 5 Shown is the simulation calculation curve of a miniaturized directional coupler described in this embodiment. It can be seen from the figure that within the relative bandwidth range from 5GHz to 8GHz, the coupling coefficient is 2.08dB to 2.25dB, the reflection coefficient of each port is...

Embodiment 3

[0036] The miniaturized directional coupler described in this embodiment further includes an isolation shell 3 wrapping the insulating body 1 . In the miniaturized directional coupler described in this embodiment, a cavity 11 is also provided in the insulating body 1, the cavity 11 is provided above the coupling cavity 12, and the top surface of the cavity 11 is provided with a A through hole opened for the outside world; pour semiconductor powder into the cavity 11 in the through hole, and adjust the coupler parameters in this way. When the adjustment is completed, inject wax oil into the cavity 11 and seal it. The adjustment method is fine-tuning, which is set when there is a certain deviation in the parameters of the combiner produced, which can be effectively used as an adjustment method.

[0037] In the miniaturized directional coupler described in this embodiment, a spacer 13 is further provided on the bottom surface of the coupling cavity 12 to improve the isolation. I...

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Abstract

The invention discloses a small directional coupler which comprises a signal line, a coupling line, and an insulated body which fixes the signal line and the coupling line. The insulated body is internally provided with a coupling chamber. The signal line and the coupling line are arranged in the coupling chamber. Through a unique square structure and projected points, the directional coupler has advantages of small transverse width, small volume, high precision and relatively good electrical performance.

Description

technical field [0001] The present invention relates to a miniaturized directional coupler. Background technique [0002] The directional coupler is a general microwave or millimeter wave component, which is used to distribute the input signal according to a certain power ratio; the directional coupler is widely used in various microwave circuits, and can be used as a power divider for Signal isolation, separation and mixing, etc. When a transmission signal is input into the main line from one end of the main line, part of the power is output from the other end of the main line. Due to the mutual coupling between the main line and the secondary line, the power transmitted in the main line can be partially coupled to the secondary line , and make the power propagation in the sub-line directional, that is, one end of the sub-line, that is, the coupling end, has power output, and the other end, that is, the isolation end, has no signal output, so that the input signal is distr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/04
Inventor 胡雨思
Owner 胡雨思