CN202797229U

CN202797229U - Orthogonal mode coupler

Info

Publication number: CN202797229U
Application number: CN 201220372074
Authority: CN
Inventors: 杨春
Original assignee: SUZHOU ETERNAL TECHNOLOGY Co Ltd
Current assignee: Suzhou Real Estate Investment Co., Ltd.
Priority date: 2012-07-30
Filing date: 2012-07-30
Publication date: 2013-03-13
Anticipated expiration: 2022-07-30

Abstract

Disclosed in the utility model is an orthogonal mode coupler that comprises an uplink rectangular waveguide, a downlink rectangular waveguide, a coupling window, an isolation diaphragm and a cavity. The isolation diaphragm and the coupling window are arranged in the cavity; the uplink rectangular waveguide is arranged at one end of the cavity and the downlink rectangular waveguide is arranged at the side wall of the cavity; and the coupling window is arranged below the downlink rectangular waveguide, wherein the length of the coupling window is 19.69 mm and the width thereof is 10.11 mm. According to the orthogonal mode coupler provided by the utility model, because the length of the coupling window is 19.69 mm and the width thereof is 10.11 mm, the coupler enables orthogonal mode coupling to be realized well under the high working frequency of 7GHz.

Description

Orthomode coupler

Technical field

The utility model belongs to the orthomode coupler field, especially is applicable to the orthomode coupler of high frequency.

Background technology

Orthomode coupler is the critical component of realizing duplexer dual polarization function, and the orthomode coupler of function admirable has a lot of impacts to the isolation performance of duplexer.The realization of orthomode coupler normally adopts the way that is coupled out a kind of signal of polarization from the public passage with polarization orthogonal to realize polarization separation.Public passage is selected circular waveguide or square wave guide usually, and the equivalent short circuit face of coupling polarized signal adopts the modes such as isolation diaphragm, stepped impedance transformer or taper impedance transformer to realize usually.

As shown in Figure 1, orthomode coupler is the waveguide connector of three an arms dress.In this waveguide connector, motivate mutually perpendicular electromagnetic wave (TE10 TE01) in rectangular waveguide in the rectangular waveguide of straight-arm and limit arm, polarized wave by the rectangular waveguide output orthogonal, or the polarized wave of a quadrature is inputted by rectangular waveguide, one of them electric vector that is parallel to the narrow wall of straight-arm will enter straight-arm, and another and its perpendicular electric vector just are coupled to the limit arm by the coupling aperture of limit arm.Orthomode coupler for two each other the polarized wave of quadrature be an element separation or that mix.Existing orthomode coupler particularly under the 7GHz high operate frequency, is difficult to realize the orthogonal mode coupling under high operate frequency.

Therefore, be necessary to design a kind of orthomode coupler that is applicable to high frequency.

The utility model content

The technical problem that (one) will solve

The technical problems to be solved in the utility model is: orthomode coupler the orthogonal mode coupling often can occur being difficult to realize under high operate frequency.

(2) technical scheme

In order to solve the problems of the technologies described above, the utility model provides a kind of orthomode coupler that is applicable to high frequency.

Wherein, described coupler comprises up square waveguide, descending square waveguide, coupling window, isolation diaphragm and cavity, be provided with isolation diaphragm and coupling window in the described cavity, one end of described cavity is provided with up square waveguide, the sidewall of described cavity is provided with descending square waveguide, described coupling window is positioned at the below of descending square waveguide, and described coupling window is of a size of 19.69 * 10.11mm.

Preferably, described cavity is notch cuttype.

Preferably, described cavity is cylindrical at the end near up square waveguide.

Preferably, described cavity is Split type structure.

Preferably, also be provided with the impedance matching section in the described cavity, described isolation diaphragm is connected with the impedance matching section.

(3) beneficial effect

Technique scheme has following advantage: the coupling window size of orthomode coupler of the present utility model is 19.69 * 10.11mm, so that this coupler under the 7GHz high operate frequency, still can preferably be realized the orthogonal mode coupling.The cavity of this orthomode coupler is notch cuttype, is easier to realize the orthogonal mode coupling of coupler.

Description of drawings

Fig. 1 is the schematic diagram of existing a kind of orthomode coupler;

Fig. 2 is the structural representation of a kind of embodiment of the utility model;

Fig. 3 is the A-A place cutaway view of Fig. 2.

Wherein, 1: up square waveguide; 2: descending square waveguide; 3: coupling window; 4: isolation diaphragm; 5: cavity; 6: the impedance matching section; 7: import and export.

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.

As shown in Figure 2, it is the structural representation of a kind of embodiment of the utility model, this coupler comprises up square waveguide 1, descending square waveguide 2, coupling window 3, isolation diaphragm 4 and cavity 5, be provided with isolation diaphragm 4 and coupling window 3 in the described cavity 5, one end of described cavity 5 is connected with up square waveguide 1, and the other end is for importing and exporting 7.The sidewall of described cavity 5 is provided with descending square waveguide 2, and described coupling window 3 is positioned at the below of descending square waveguide 2.Preferably, this coupling window is of a size of 19.69 * 10.11mm.Coupling window size of the present utility model is 19.69 * 10.11mm, this size draws through experimental test, and more can realize in actual use the orthogonal mode coupling, the length of this coupling window is 19.69mm, width is 10.11mm, and this rectangular dimension relatively meets the orthogonal mode coupling, because the coupling window size is 19.69 * 10.11mm, so that this coupler under the 7GHz high operate frequency, can preferably be realized the orthogonal mode coupling.

As shown in Figure 3, partial sectional view for Fig. 1, this coupler comprises up square waveguide 1 and descending square waveguide 2, motivates mutually perpendicular electromagnetic wave (TE10 TE01) in rectangular waveguide in these two rectangular waveguides, and the electromagnetic wave of vertical stack is via the polarized wave of importing and exporting 7 output orthogonals.Input by importing and exporting 7 when the polarized wave of a quadrature, one of them electric vector that is parallel to the narrow wall of straight-arm will enter up square waveguide 1, and another and its perpendicular electric vector just are coupled to descending square waveguide 2 by the coupling aperture of limit arm.

Cavity 5 of the present utility model can be various suitable shapes, preferably, is notch cuttype.Because cavity is notch cuttype, more be easy to realize the orthogonal mode coupling.More preferably, this cavity 5 is cylindrical at the end near up square waveguide 1.In cavity, also be provided with impedance matching section 6, this impedance matching section 6 import and export 7 and isolation diaphragm 4 between, and be connected with described isolation diaphragm 4.More preferably, this cavity is Split type structure, is combined by the multistage cavity.

As can be seen from the above embodiments, it is 19.69 * 10.11mm that the utility model embodiment utilizes the coupling window size, so that this coupler under the 7GHz high operate frequency, still can preferably be realized the orthogonal mode coupling.

The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection range of the present utility model.

Claims

1. orthomode coupler, it is characterized in that, described coupler comprises up square waveguide, descending square waveguide, coupling window, isolation diaphragm and cavity, be provided with isolation diaphragm and coupling window in the described cavity, one end of described cavity is provided with up square waveguide, the sidewall of described cavity is provided with descending square waveguide, and described coupling window is positioned at the below of descending square waveguide, and described coupling window is of a size of 19.69 * 10.11mm.

2. orthomode coupler as claimed in claim 1 is characterized in that, described cavity is notch cuttype.

3. orthomode coupler as claimed in claim 1 is characterized in that, described cavity is cylindrical at the end near up square waveguide.

4. such as any one described orthomode coupler among the claim 1-3, it is characterized in that described cavity is Split type structure.

5. such as any one described orthomode coupler among the claim 1-3, it is characterized in that also be provided with the impedance matching section in the described cavity, described isolation diaphragm is connected with the impedance matching section.