WO2019052095A1

WO2019052095A1 - Co-directional directional coupling structure

Info

Publication number: WO2019052095A1
Application number: PCT/CN2018/072585
Authority: WO
Inventors: 王杰
Original assignee: 叶健聪
Priority date: 2017-09-17
Filing date: 2018-01-15
Publication date: 2019-03-21
Also published as: CN107681243A; CN107681243B

Abstract

Disclosed is a co-directional directional coupling structure, comprising a first coupling structure and a second coupling structure. One end surface of the first coupling structure is provided with an isolation rod, and the other end surface thereof is provided with a feeding plate; one end of the feeding plate is electrically connected to the other end surface of the first coupling structure; a coupling rod extends out of the other end of the feeding plate towards the isolation rod, and the coupling rod is positioned in the second coupling structure. The co-directional directional coupling structure is easier to assemble, easy to maintain and convenient to repair. Because a coupling part is reasonable in arrangement, adjustment can be conveniently realized by rotating coupling wings. By rotating the coupling wing at either side, the coupling degree and other electrical performance parameters can be easily adjusted. Particularly, the stability of the co-directional directional coupling structure is high, and is superior to other directional couplers under an anti-knock test. According to the present invention, the coupling rod, the isolation rod, and a signal input rod are provided in the same direction by designing the coupling rod as U-shaped, thereby facilitating use and wiring.

Description

Codirectional directional coupling structure

Technical field

The present invention relates to a co-directional directional coupling structure.

Background technique

[0002] A directional coupler is a general-purpose microwave or millimeter wave component for distributing input signals according to a certain power proportional relationship. A directional coupler is widely used in various microwave circuits and can be used as a power splitter. For signal isolation, separation and mixing. When a transmission signal is input from one end of the main line to the main line, part of the power is output from the other end of the main line, and the power portion transmitted in the main line can be coupled to the sub line due to mutual coupling between the main line and the sub line. And the power is propagated in the secondary line to have directionality, that is, one end of the secondary line, that is, the coupled end has power output, and the other end, that is, the isolated end, has no signal output, thereby completing the allocation of the input signal according to a certain power proportional relationship. .

[0003] In the existing directional coupler, except for the directional coupler of the strip line, the structure of the remaining directional couplers is mostly closed, which is difficult to manufacture, and since most of the directional couplers are formed once, it is difficult to adjust. , and the stability after assembly is poor. In addition, directional couplers also require better electrical performance.

technical problem

Problem solution

Technical solution

[0004] It is an object of the present invention to overcome the above-discussed shortcomings and to provide a co-directional directional coupling structure.

[0005] In order to achieve the above object, a specific embodiment of the present invention is as follows: including a first coupling structure and a second coupling structure;

[0006] one end face isolation rod of the first coupling mechanism, and the other end surface is provided with a feed plate, one end of the feed plate is electrically connected to the other end surface of the first coupling mechanism, and the other end of the feed plate is opposite to the isolation rod The direction extends out of the coupling rod, and the coupling rod is located in the second coupling mechanism;

[0007] One end surface of the second coupling mechanism is provided with a signal input rod.

[0008] wherein the first coupling structure comprises a first structural body having a rectangular parallelepiped shape, a first structural body, a center of the structural body is provided with a rectangular cavity-shaped gap cavity; two sides of the first structural body are recessed inwardly to provide a rectangular first groove, and the first groove inner bottom is facing inwardly and has a rectangular second a second groove is formed in the inner groove of the second groove; the first structure body has a longitudinal direction, the longitudinal width of the first groove is larger than the second groove, and the second groove The longitudinal width is greater than the third groove, and the longitudinal width of the third groove is the same as the thickness of the gap cavity; the center of the top surface and the bottom surface of the first structural body are upwardly convex with a cylindrical adjustment boss to adjust the top surface of the boss a main adjustment hole, the main adjustment hole is communicated through the adjustment boss gap cavity; further comprising a coupling unit mounted on the adjustment boss, the coupling unit comprising a coupling disc and extending outward from the coupling disc a fan-shaped coupling wing; the coupling unit and the main adjustment hole are connected by a rotating shaft; the top surface and the bottom surface of the first structure body are respectively provided with a plurality of secondary adjustment holes, and the adjustment knob is mounted on each of the secondary adjustment holes ;

[0009] The second coupling structure includes a second structural body having a cross-section in a racetrack shape, the second structural body is a tubular second structural body, and the top surface and the bottom surface of the second structural body are respectively provided with a first pupil. The first bore is for receiving the coupling unit; the top surface and the bottom surface of the second mechanism body are each provided with a plurality of second bores, and the second bore is for receiving the adjustment dial.

[0010] wherein, further comprising an insulating pad having a semicircular cross section, the insulating pad is disposed between the first gutter opening of the first structural body and the second structural body, and is configured to make the first structural body and the first structure The relative positions between the two structural bodies are fixed.

[0011] wherein, further comprising a first elongated fixing pad disposed on two sides of the top surface and the bottom surface of the first structural body, the inner wall of the second structural body and the second elongated fixing pad corresponding to the second Long strip fixing pad.

[0012] wherein the inner wall of the gap cavity is coated with an insulating coating.

[0013] wherein, the first structural body and the adjustment boss are integrally formed. Let the width of the first groove be a, the width of the second groove be b, and the thickness of the gap cavity be w, then a+b≥5w.

Advantageous effects of the invention

Beneficial effect

[0014] It is easier to assemble when assembling; it is very easy to maintain, and its maintenance is convenient; because the setting of the coupling part is reasonable, the adjustment is also very convenient, only the rotating coupling wing needs to be rotated, and the rotation of the coupling wings on both sides makes it The coupling and other electrical performance parameters can be easily adjusted. Among them, the most important is that its stability is very good, and it is superior to other directional couplers under seismic test; the invention is designed by U-shaped coupling rod, The coupling rod and the isolation rod and the signal input rod are arranged in the same direction, which is more convenient to use and route.

Brief description of the drawing

DRAWINGS

1 is a perspective view of a directional coupling structure;

2 is a top plan view of a directional coupling structure; [0016] FIG.

[0017] FIG. 3 is an exploded view of the directional coupling structure;

4 is a front elevational view of the directional coupling structure; [0018] FIG.

[0019] FIG. 5 is a perspective view of a directional coupling structure;

6 is a perspective view of a first coupling structure; [0020] FIG.

[0021] FIG. 7 is a perspective view of a coupling wing;

[0022] FIG. 8 is a front view of the directional coupling structure (tossing the coupling rod);

[0023] The reference numerals in FIGS. 1 to 8 illustrate:

[0024] 1-first structural body; 11-gap cavity; 12-coupling rod; 13-isolation rod; 14-second adjustment hole; 15-first groove; 16-second groove; 17-third幵 groove; 18-adjustment boss; 19-rotation axis; 2-second structure body; 21-first pupil; 22-second pupil; 23-signal input rod; 3-insulation pad; Long strip fixed pad; 51-coupled disc; 52-coupled wing; 53-feed plate.

Embodiments of the invention

The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments, which are not intended to limit the scope of the invention.

As shown in FIG. 1 to FIG. 8 , the embodiment includes a first coupling structure and a second coupling structure;

[0027] One end face isolation rod 13 of the first coupling mechanism, and the other end surface is provided with a feed plate 53. One end of the feed plate 53 is electrically connected to the other end surface of the first coupling mechanism, and the other end of the feed plate 53 Extending the coupling rod 12 in the direction of the isolation rod 13, the coupling rod 12 is located in the second coupling mechanism;

[0028] One end face of the second coupling mechanism is provided with a signal input rod 23.

[0029] A co-directional directional coupling structure according to the embodiment, the first coupling structure includes a first structural body 1 having a rectangular parallelepiped shape, a first structural body 1, and a center of the first structural body 1 is provided with a rectangular parallelepiped a gap-shaped cavity 11; the two sides of the first structural body 1 are recessed inwardly and provided with a rectangular first groove 15, the first groove 15 The inner bottom recessed inwardly is provided with a rectangular second groove 16 , and the inner bottom of the second groove 16 is concavely disposed with a rectangular third groove 17; the thickness direction of the first structural body 1 is longitudinal, first The longitudinal width of the groove 15 is larger than the second groove 16, the longitudinal width of the second groove 16 is larger than the third groove 17, and the longitudinal width of the third groove 17 is the same as the thickness of the gap cavity 11; the top of the first structural body 1 The center of the surface and the bottom surface are upwardly convex with a cylindrical adjusting boss 18, and the top surface of the adjusting boss 18 has a main adjusting hole, and the main adjusting hole penetrates through the adjusting boss 18, and the gap cavity 11 communicates; a coupling unit on the boss 18, the coupling unit includes a coupling disc 51 and a fan-shaped coupling wing 52 extending outward from the coupling disc 51; the coupling unit and the main adjustment hole are connected by a rotating shaft 19; The top surface and the bottom surface of the first structural body 1 are respectively provided with a plurality of secondary adjustment holes 14 , and each of the secondary adjustment holes 14 is mounted with an adjustment dial;

[0030] The second coupling structure includes a second structural body 2 having a cross-section in a racetrack shape, and the second structural body 2 is a tubular second structural body 2, and the top surface and the bottom surface of the second structural body 2 are provided with a first a first hole 21 for accommodating the coupling unit; a top surface and a bottom surface of the second mechanism body are respectively provided with a plurality of second holes 22, and the second hole 22 is for accommodating the adjusting wheel . In the co-directional directional coupling structure of the embodiment, the inner wall of the gap cavity 11 is coated with an insulating coating. The invention has the following advantages through reasonable structure setting: The assembly is very convenient, because the structure is reasonable, and the assembly is easier to assemble; the maintenance is very easy to maintain, and the maintenance is convenient; since the setting of the coupling portion is reasonable, the adjustment is It is also very convenient, only need to rotate the coupling wing 52, the rotation of the coupling wings 52 on both sides makes it easy to adjust the coupling degree and other electrical performance parameters. Among them, the most important is that the present invention has a wide-spectrum bandwidth coupling degree of 3.4 GHz to 8 GHz due to an optimized structural design, and the coupling coefficient is between 2.00 WB and 2.205 dB, and the performance is excellent. In addition, its stability is very good, and it is superior to other directional couplers under seismic test. The invention adopts a U-shaped coupling rod design, and the coupling rod, the isolation rod and the signal input rod are arranged in the same direction, which is more convenient to use and route. Moreover, through simulation and actual testing, the electrical performance of the three is still very good and meets the requirements.

[0031] In the present invention, the structure of the gap cavity 11 can effectively balance the coupling on both sides and improve the isolation of the port.

Moreover, it cooperates with the rotating coupling wing 52 to effectively increase the coupling coefficient by 10%-15<3⁄4. In particular, the rotary wing coupling method of the present invention can maximize the coupling coefficient, reduce interference, and reduce the standing wave ratio.

[0032] A co-directional directional coupling structure according to the embodiment further includes an insulating pad 3 having a semicircular cross section. The insulating pad 3 is disposed between the first tongue and groove 15 of the first structural body 1 and the second structural body 2 for fixing the relative position between the first structural body 1 and the second structural body 2.

[0033] A co-directional directional coupling structure according to the embodiment further includes a first elongated fixing pad 4 disposed on two sides of the top surface and the bottom surface of the first structural body 1, and the second structural body A second elongated fixing pad corresponding to the first elongated fixing pad 4 on the inner wall of the second wall.

[0034] In the co-directional directional coupling structure described in this embodiment, the first structural body 1 and the adjustment boss 18 are integrally formed. Let the width of the first groove 15 be a, the width of the second groove 16 be b, and the thickness of the gap cavity 11 be w

, then a+b≥5w, set this parameter, its other performance is more stable, the reflection coefficient of each port is lower than -20dB

The isolation is higher than 18.65dB.

The above description is only a preferred embodiment of the present invention, and equivalent changes or modifications made to the structures, features, and principles described in the scope of the present invention are included in the protection of the present patent application. Within the scope

Claims

Claim

[Claim 1] A co-directional directional coupling structure, comprising: a first coupling structure and a second coupling structure; an end face isolation rod (13) of the first coupling mechanism, and a feed plate on the other end surface (53), one end of the feeding plate (53) is electrically connected to the other end surface of the first coupling mechanism, and the other end of the feeding plate (53) extends out of the coupling rod in the direction of the isolation rod (13) (

12), the coupling rod (12) is located in the second coupling mechanism; one end surface of the second coupling mechanism is provided with a signal input rod (23); the first coupling structure comprises a first structural body (1) having a rectangular parallelepiped shape, a first structural body (the center of the first structural body ( ₁₎ is provided with a rectangular cavity-shaped gap cavity (11); the first structural body (1) is recessed inwardly with a rectangular first groove (15), the first groove (15) is internally recessed with a rectangular second groove (16), and the second groove (16) is internally recessed with a rectangular third groove (17) The first structural body (1) has a longitudinal direction, the longitudinal width of the first groove (15) is greater than the second groove (16), and the longitudinal width of the second groove (16) is greater than the third groove (17), the longitudinal width of the third groove (17) is the same as the thickness of the gap cavity (11); the center of the top surface and the bottom surface of the first structural body (1) are upwardly convex with a cylindrical adjustment boss (18) ), the upper top surface of the adjusting boss (18) has a main adjusting hole, and the main adjusting hole penetrates the adjusting boss (18) 11) communicating; further comprising a coupling unit mounted on the adjustment boss (18), the coupling unit comprising a coupling disc (51) and a fan-shaped coupling wing extending outward from the coupling disc (51) ( 52); the coupling unit and the main adjustment hole are connected together by a rotating shaft (19); the top surface and the bottom surface of the first structural body (1) are respectively provided with a plurality of secondary adjustment holes (14), each adjustment An adjustment dial is mounted on the hole (14); the second coupling structure comprises a second structural body (2) having a cross-section in the shape of a racetrack, and the second structural body (2) is a tubular second structural body (2). The top surface and the bottom surface of the second structural body (2) are respectively provided with a first pupil (21) for receiving the coupling unit; the top surface and the bottom surface of the second mechanism body are respectively provided A plurality of second bores (22) for receiving the adjustment dial.

[Claim 2] A co-directional directional coupling structure according to claim 1, further comprising: an insulating mat (3) having a semicircular cross section, and an insulating mat (3) disposed on the first structural body (1 The first groove (15) between the cornice and the second structural body (2) is used to fix the relative position between the first structural body (1) and the second structural body (2).

[Claim 3] A co-directional directional coupling structure according to claim 1, further comprising: a first elongated fixing provided on both sides of the top surface and the bottom surface of the first structural body (1) a pad (4), a second elongated fixing pad corresponding to the inner wall of the second structural body (2) and the first elongated fixing pad (4).

[Claim 4] A isotropically coupled coupling structure according to claim 1, wherein: the inner wall of the gap cavity (11) is coated with an insulating coating.

[Claim 5] A co-directional directional coupling structure according to claim 1, wherein the first structural body (1) and the adjustment boss (18) are integrally formed.

[6] A co-directional directional coupling structure according to claim 1, wherein: the first groove (15) has a width a, and the second groove (16) has a width b, a gap The thickness of the cavity (11) is w, then a + b ≥ 5w.