CN202797232U - Directional coupler - Google Patents

Abstract

Disclosed in the utility model is a directional coupler, which relates to the communication equipment field. The directional coupler with a cavity structure comprises an input port, an output port, a coupled port, an isolated port and a coupled window. Besides, the directional coupler is characterized in that the length of the coupled window is 6.05mm and the width thereof is 2.84mm; and the lengths of the input port, the output port, the coupled port and the isolated port are 5.69mm and the widths thereof are 2.84mm. According to the directional coupler provided by the utility model, directional coupling with a 6-dB coupling degree can be realized at the working frequency of 38GHz, so that the directional coupler has wide application prospects.

Description

Directional coupler

Technical field

The utility model relates to the communication equipment technical field, particularly a kind of directional coupler.

Background technology

Directional coupler is a kind of general microwave/millimeter wave parts, can be used for isolation, separation and the mixing of signal, such as monitoring, source power output fixed ampllitude, signal source isolation, the transmission of power and the sweep check of reflecting etc.The key technical indexes has directivity, standing-wave ratio, the degree of coupling, insertion loss.

Fig. 1 is existing directional coupler operation principle schematic diagram, as shown in Figure 1, directional coupler comprises four network ports, its operation principle is: when signal is inputted from input port 1, most of signal is from output port 2 straight-through outputs, wherein the sub-fraction signal is coupled out from coupling port 3, and isolated port 4 connects a matched load usually.

The defective of existing directional coupler is, under the operating frequency of 38GHz, is difficult to realize the directional couple of degree of coupling 6dB.

The utility model content

The technical problem that (one) will solve

The technical problems to be solved in the utility model is: how a kind of directional coupler is provided, so that under the operating frequency of 38GHz, realizes the directional couple of degree of coupling 6dB.

(2) technical scheme

For solving the problems of the technologies described above, the utility model provides a kind of directional coupler, comprising: input port, output port, coupling port, isolated port and coupling window;

Described directional coupler is cavity body structure;

And described coupling window is of a size of 6.05mm * 2.84mm, and the size of described input port, output port, coupling port and isolated port is 5.69mm * 2.84mm.

Wherein, described input port is communicated with described output port and consists of the first cavity;

Described coupling port is communicated with described isolated port and consists of the second cavity;

Described the first cavity and described the second cavity are symmetrically distributed in the both sides of the axis of described directional coupler, and are interconnected by described coupling window.

Wherein, the operating frequency of described directional coupler is 38GHz.

(3) beneficial effect

Described directional coupler of the present utility model, the design of employing cavity body structure, and its coupling window is of a size of 6.05mm * 2.84mm, the size of its input port, output port, coupling port and isolated port is 5.69mm * 2.84mm, by above-mentioned design, described directional coupler can be realized the directional couple of degree of coupling 6dB under the operating frequency of 38GHz, be with a wide range of applications.

Description of drawings

Fig. 1 is existing directional coupler operation principle schematic diagram

Fig. 2 is the vertical view of the described directional coupler of the utility model embodiment;

Fig. 3 is that the A-A of Fig. 2 is to view.

Embodiment

Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.

Fig. 2 is the vertical view of the described directional coupler of the utility model embodiment, Fig. 3 is that the A-A of Fig. 2 is to view, referring to Fig. 2 and Fig. 3, the described directional coupler of the utility model embodiment comprises: input port 100, output port 200, coupling port 300, isolated port 400 and coupling window 500.

Described directional coupler integral body is cavity body structure, particularly,

Described input port 100 is communicated with described output port 200 and consists of the first cavity;

Described coupling port 300 is communicated with described isolated port 400 and consists of the second cavity;

Described the first cavity and described the second cavity are symmetrically distributed in the both sides of the axis of described directional coupler, and are interconnected by described coupling window 500.

Wherein, described coupling window 500 is rectangle, and its length L is 6.05mm, and width N is 2.84mm.

Described input port 100, output port 200, coupling port 300 and isolated port 400 also are measure-alike rectangle, and its length M is 5.69mm, and width N is 2.84mm.

The operating frequency of described directional coupler is 38GHz, and can realize the coupling energy of 6dB under the operating frequency of 38GHz, i.e. the coupling energy of described coupling port 300 output 6dB.

The described directional coupler of the utility model embodiment, the design of employing cavity body structure, and its coupling window is of a size of 6.05mm * 2.84mm, the size of its input port, output port, coupling port and isolated port is 5.69mm * 2.84mm, by above-mentioned design, described directional coupler can be realized the directional couple of degree of coupling 6dB under the operating frequency of 38GHz, be with a wide range of applications.

Above execution mode only is used for explanation the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that does not break away from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.

Claims (3)

1. a directional coupler comprises: input port, output port, coupling port, isolated port and coupling window;

It is characterized in that described directional coupler is cavity body structure;

And described coupling window is of a size of 6.05mm * 2.84mm, and the size of described input port, output port, coupling port and isolated port is 5.69mm * 2.84mm.

2. directional coupler as claimed in claim 1 is characterized in that,

Described input port is communicated with described output port and consists of the first cavity;

Described coupling port is communicated with described isolated port and consists of the second cavity;

Described the first cavity and described the second cavity are symmetrically distributed in the both sides of the axis of described directional coupler, and are interconnected by described coupling window.

3. directional coupler as claimed in claim 1 is characterized in that, the operating frequency of described directional coupler is 38GHz.

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