CN211404691U

CN211404691U - Double-waveguide structure feed source and tuner

Info

Publication number: CN211404691U
Application number: CN201922405511.2U
Authority: CN
Inventors: 袁萍; 陈章红; 颜娜
Original assignee: Shenzhen X Square Technology Co ltd
Current assignee: Shenzhen X Square Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-01
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a feed source with a double-waveguide structure, which comprises a feed source and a bearing plate, wherein the feed source comprises two independent waveguide cavities, and a partition plate is arranged between the two waveguide cavities; the waveguide cavities each include a waveguide port and a waveguide tube. The utility model also discloses a tuner of including above-mentioned double waveguide structure feed. The utility model discloses a dual waveguide structure feed has two waveguide cavity, can compatible different satellite antenna that sets up respectively, compact structure, low cost, stability and uniformity advantage such as good, and signal loss is little. And the two waveguide cavities are independently arranged, so that mutual interference between the satellite antennas can be prevented.

Description

Double-waveguide structure feed source and tuner

Technical Field

The utility model relates to a satellite communication field technical field especially relates to a two waveguide structure feed and tuner.

Background

The tuner is used for receiving satellite television signals, performing channel selection, signal amplification and frequency reduction processing, and finally outputting stable intermediate frequency signals. The tuner usually comprises a waveguide, one end of the waveguide is connected with the feed source, and a circuit board box is arranged outside the other end of the waveguide.

With the rapid development of global broadcast and digital television satellite communication technologies and the increasing increase of users, the interval between geosynchronous orbit satellites is gradually reduced, a one-pot and multi-satellite system is urgently needed to receive satellite signals, and a feed source of a tuner has a core function in the one-pot and multi-satellite system. The existing double-satellite feed source for receiving double-satellite signals with two-degree spacing adopts a combined and separated structure, namely, the two separated feed sources are bonded together through glue, the working procedure is complex, the stability and the consistency are poor, and the signal loss is large.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, the present application provides a dual waveguide structure feed source, which includes a feed source and a bearing plate, wherein the feed source includes two independent waveguide cavities, and a partition plate is disposed between the two waveguide cavities; the waveguide cavities each include a waveguide port and a waveguide tube.

Preferably, the two waveguide cavities are arranged side by side in the horizontal direction, and the central axes of the two waveguide cavities are parallel and have a distance of 20 mm.

Preferably, the distance from the end part of the waveguide port to the bottom of the two waveguide cavities is 85.1 mm.

Preferably, be provided with 4F head connection positions on the loading board, 4F head connection positions set up side by side, and the distance of adjacent F head connection position is 16 mm.

Preferably, the waveguide tubes of the two waveguide cavities are provided with an I-shaped pinhole and an L-shaped pinhole, and the central line of the I-shaped pinhole passes through the central axis of the corresponding waveguide cavity.

Preferably, the L-shaped pin hole comprises a vertical part and a horizontal part which are perpendicular to each other, the vertical part is parallel to the I-shaped pin hole, and the horizontal part is perpendicular to the I-shaped pin hole;

the distance between the vertical part and the I pinhole of each waveguide cavity along the horizontal direction is 11.3mm, and the distance between the vertical part and the I pinhole along the vertical direction is 11.6 mm.

Preferably, the waveguides are circular structure waveguides.

Preferably, the circular waveguide has a first plane and a second plane symmetrically arranged on the inner wall; the first plane and the second plane are not connected with each other, the first plane and the second plane are vertical, and the first plane is parallel to the bearing plate;

the first plane and the second plane both extend from the bottom of the waveguide cavity to a position close to the waveguide port along the central axis direction of the waveguide cavity.

Preferably, the waveguide mouths of the two cavities are sequentially a horn mouth and a circular truncated cone, the end part of the feed source is an elliptical table, and the elliptical table is connected with the circular truncated cones of the two cavities.

The application also provides a tuner which comprises the double-waveguide structure feed source.

The utility model discloses following beneficial effect has:

the utility model discloses a dual waveguide structure feed has two waveguide cavity, can compatible different satellite antenna that sets up respectively, compact structure, low cost, stability and uniformity advantage such as good, and signal loss is little. And the two waveguide cavities are independently arranged, so that mutual interference between the satellite antennas can be prevented.

Drawings

Fig. 1 is a schematic perspective view of a feed source with a dual waveguide structure according to the present invention;

fig. 2 is a top view of a dual-waveguide structure feed source provided by the present invention;

fig. 3 is a side view of a dual-waveguide structure feed source provided by the present invention;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;

fig. 6 is a bottom view of a dual-waveguide feed source provided by the present invention;

fig. 7 is a front view of a dual-waveguide structure feed source provided by the present invention.

Reference numerals:

10-waveguide port;

11-a bell mouth;

12-a circular table;

13-an elliptical table;

20-a waveguide;

21-a second plane;

22-a first plane;

23-a bridge-like bevel;

30-a carrier plate;

40-a separator;

a 51-I pinhole;

a 52-L pinhole;

60-F head connecting position.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

As shown in fig. 1-7, the utility model discloses a double-waveguide structure feed source, which comprises a feed source and a bearing plate 30.

The dual-waveguide structure feed source of the embodiment of the application is suitable for receiving two-degree-distance dual-satellite signals and comprises two waveguides. Specifically, the feed source comprises two independent waveguide cavities, and a partition plate 40 is arranged between the two waveguide cavities for separating, so that mutual interference between the satellite antennas can be prevented. Each waveguide cavity comprises a 1 waveguide port 10 and a waveguide 20, with a baffle 40 extending from the feed base to the 1 waveguide port 10. The waveguide tubes 20 of the two waveguide cavities are respectively provided with an I-shaped needle hole 51 and an L-shaped needle hole 52 for fixing the I-shaped needle and the L-shaped needle respectively.

The utility model discloses specific embodiment's double waveguide structure feed has two waveguide cavity, can compatible different satellite antenna that sets up respectively, and compact structure, low cost, stability and uniformity advantage such as good, signal loss are little. And the two waveguide cavities are independently arranged, so that mutual interference between the satellite antennas can be prevented.

The two waveguide cavities of the embodiment of the present application are arranged side by side in the horizontal direction. The central axes of the two waveguide cavities are parallel and the distance is 20mm, which accords with the value of the included angle of a 2-degree satellite.

The waveguide depth of the present embodiment-1 the distance from the end of the waveguide port 10 to the bottom of the two waveguide cavities is preferably 85.1 mm. When the waveguide depth is the value, the effect of the dual-waveguide structure feed source on receiving satellite signals is optimal.

The feed source is part of the tuner. In the tuner, the relative position of the I pin and the L-shaped pin is important for the layout of the PCB, and improper layout can influence the receiving intensity of the two-degree satellite signals. In the embodiment of the present application, the L-shaped pin hole 52 includes a vertical portion and a horizontal portion perpendicular to each other, and the vertical portion is parallel to the I-shaped pin hole 51 and is perpendicular to the carrier plate 30. The horizontal part of the L-shaped pin hole 52 is perpendicular to the I-shaped pin hole 51. The I-pin hole 51 is disposed close to the 1-waveguide port 10 with respect to the L-pin hole 52. In each waveguide cavity, the distance between the vertical portion and the I-pin hole 51 in the horizontal direction was 11.3mm, and the distance between the vertical portion and the I-pin hole 51 in the vertical direction was 11.6 mm.

Wherein the center line of the I-pinhole 51 passes through the central axis of the corresponding waveguide cavity. The vertical portion of the L-shaped pin hole 52 is located off-center from the central axis of the waveguide cavity.

The waveguide 20 of the present embodiment is a circular waveguide. On the inner wall of the circular structure waveguide, there are two first planes 22 symmetrically arranged and two second planes 21 symmetrically arranged.

Wherein, the first plane 22 is parallel to the loading plate 30, and the first plane 22 and the second plane 21 are perpendicular to each other. The first plane 22 and the second plane 21 each extend from the bottom of the waveguide cavity to a position close to the waveguide port 10 in the direction of the central axis of the waveguide cavity. The first plane 22 and the second plane 21 each have a width smaller than the diameter of the circular-structured waveguide, and the first plane 22 and the second plane 21 are not connected to each other. This gives the waveguide 20 a cross-section in the shape of four circular arcs connected by four straight lines. Along the central axis of the waveguide cavity, the first plane 22 and the main part of the waveguide 20 are transited by a bridge-like slope 23, and the second plane 21 and the main part of the waveguide 20 are also transited by a bridge-like slope 23.

The 1 waveguide port 10 of the two waveguide cavities is sequentially provided with a bell mouth 11 and a circular truncated cone 12, and the partition plate 40 is positioned between the bell mouths 11 of the two waveguide cavities and also between the circular truncated cones 12 of the two waveguide cavities. The bell 11 adjoins the waveguide 20. The diameter of the circular truncated cone 12 is larger than the maximum diameter of the bell mouth 11.

The end of the feed source is an elliptical table 1312, and the elliptical table 1312 is connected with the circular tables 12 of the two waveguide cavities. The elliptical stage 1312 has no diaphragm 40.

This application embodiment loading board 30 is provided with 4F head hookup locations 60, the utility model discloses a two waveguide structure feed is four output F heads of two stars. The F-head connection site 60 is used for mounting the F-head. In this application, 4F head connection positions 60 are arranged side by side in a straight line, and the distance between adjacent F head connection positions 60 is preferably 16 mm.

The utility model also discloses a tuner. The tuner comprises a dual-waveguide structure feed as described above. The tuner also comprises a PCB arranged at the carrier plate and an F-shaped head.

The utility model discloses following beneficial effect has:

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. A double-waveguide structure feed source comprises a feed source and a bearing plate, and is characterized in that the feed source comprises two independent waveguide cavities, and a partition plate is arranged between the two waveguide cavities; the waveguide cavities each include a waveguide port and a waveguide tube.

2. The dual waveguide structure feed of claim 1 wherein the two waveguide cavities are horizontally disposed side by side, and the central axes of the two waveguide cavities are parallel and spaced apart by 20 mm.

3. The dual waveguide structure feed as claimed in claim 1, wherein the distance from the waveguide port end to the bottom of both waveguide cavities is 85.1 mm.

4. The feed source of dual-waveguide structure of claim 1, wherein 4F-connection sites are disposed on the carrier plate, the 4F-connection sites are disposed side by side, and a distance between adjacent F-connection sites is 16 mm.

5. The dual-waveguide structure feed source of claim 1, wherein the waveguides of the two waveguide cavities are provided with an I-pinhole and an L-shaped pinhole, and a central line of the I-pinhole passes through a central axis of the corresponding waveguide cavity.

6. The dual waveguide structure feed of claim 5 wherein the L-shaped pin holes comprise vertical portions and horizontal portions perpendicular to each other, the vertical portions being parallel to the I-pin holes and the horizontal portions being perpendicular to the I-pin holes;

7. The dual waveguide structure feed as claimed in claim 1, wherein the waveguides are all circular structure waveguides.

8. The dual waveguide structure feed as claimed in claim 7, wherein the circular structure waveguide has a first plane and a second plane symmetrically disposed on its inner wall; the first plane and the second plane are not connected with each other, the first plane and the second plane are vertical, and the first plane is parallel to the bearing plate;

9. The feed source with the double-waveguide structure of claim 1, wherein the waveguide openings of the two cavities are a horn opening and a circular truncated cone in sequence, the end portion of the feed source is an elliptical table, and the elliptical table is connected with the circular truncated cones of the two cavities.

10. A tuner comprising the dual-waveguide feed as claimed in any one of claims 1 to 9.