Positive feed pan antenna integrated tuner

Abstract

The invention relates to the technical field of tuners, in particular to a positive feed pan antenna integrated tuner which is better in waterproof performance and comprises a circular wave collector, a wave collecting cavity is formed in the middle of the wave collector, a wave guide tube is arranged at the bottom end of the wave collector, and an integrated spacer is arranged in the middle of the bottom end of the wave guide tube. A supporting block is arranged at the side end of the bottom of the wave guide tube, a shielding cover is arranged at the front end of the supporting block, an adapter is arranged at the bottom end of the supporting block, a waterproof shell is arranged on the outer side of the wave collector, a containing cavity is formed in the middle of the waterproof shell and matched with the wave collector, the wave guide tube, the supporting block and the shielding cover, and the top of the waterproof shell is in a conical shape. A secondary reflecting surface is arranged at the top of the waterproof shell, the middle of the secondary reflecting surface is conical, and a plastic cover is arranged at the top end of the waterproof shell. The method is higher in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of high-frequency heads, and in particular to a high-frequency head integrated with a positive-feed dish antenna. Background Art

[0002] The function of the high-frequency head (LNB, downconverter) for positive-feedback dishes is to amplify the signal received from the satellite and to process the image deformation and interference caused by unstable transmission. The existing high-frequency head for positive-feedback dishes generally includes a head (secondary reflection part), a support part, a horn-type interface (commonly known as a wave collector), an integrated circuit board part, and a waveguide part between the integrated circuit board and the wave collector. The wave collector and the waveguide are a whole, and the integrated circuit board part is connected to the waveguide.

[0003] The secondary reflection surface of the existing positive feed dish antenna band high frequency head is connected to the wave collector through a plastic support; it has the following disadvantages:

[0004] Disadvantage 1: The plastic support is a cylindrical structure, and is connected to the secondary reflector and the wave collector by gluing. In long-term sunlight exposure, the connection will become unstable and easy to fall off. In addition, water will easily enter when it rains, resulting in a high product failure rate and a short service life (after power is turned on, the temperature inside the waveguide rises, and the air overflows under the action of pressure. If it is in humid weather, after the power is turned off, the free water molecules in the air will be sucked in due to the pressure, causing corrosion of the waveguide).

[0005] Disadvantage 2: The secondary reflection surface and waveguide exposed to the outside need to be painted to prevent rust, which is not beautiful enough.

[0006] Disadvantage 3: The isolation of the high-frequency head is achieved by a plastic sheet inserted in the waveguide. After long-term use, the plastic sheet is easy to fall off and the isolation performance is poor. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the present invention provides a high-frequency head integrated with a positive-feed dish antenna having better waterproof performance.

[0009] (II) Technical solution

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A positive-feed dish antenna integrated high-frequency head, comprising a waterproof shell, a wave collector and an integrated circuit board, wherein the wave collector and the integrated circuit board are both located in the waterproof shell;

[0012] The wave collector is in a circular structure, and a wave collecting cavity is provided in the middle of the wave collector;

[0013] The bottom end of the wave collector is connected to a waveguide, and the wave collector cavity and the waveguide are in communication; an isolating sheet is also provided at the bottom end of the waveguide, and the isolating sheet and the waveguide are in an integrated design; a support block is provided at the outer side of the bottom of the waveguide, a shielding cover is provided on the support block, and the support block and the shielding cover of the integrated circuit board are connected by screws; the integrated circuit board is located between the support block and the shielding cover, one end of the integrated circuit board is connected to the waveguide through a probe, and the other end is connected to a converter;

[0014] The adapter passes through the bottom of the waterproof shell; a secondary reflection surface is also provided in the waterproof shell, and the secondary reflection surface is located directly above the wave collecting cavity, and the central axes of the two coincide with each other; a waterproof cover is provided above the secondary reflection surface; the waterproof cover overlaps the waterproof shell to form a waterproof cavity.

[0015] Furthermore, the middle portion of the secondary reflection cover is configured in a cone shape.

[0016] Furthermore, the extension direction of the isolation sheet is parallel to the central axis of the waveguide; a step structure is provided at the top of the waveguide; and the step structure extends from one side of the top to the other side.

[0017] Furthermore, a fixed installation plate (9) is arranged on the outer side of the waterproof housing, and a mounting screw hole is arranged in the middle of each fixed installation plate (9).

[0018] Furthermore: the waterproof cover is overlapped on the outer edge of the waterproof shell, and the two are connected by a buckle.

[0019] Furthermore, the isolation plate and the waveguide are of an integrated design; two probes are provided, which are respectively located on both sides of the isolation plate and face the isolation plate.

[0020] Furthermore, the two probes are located on the same straight line.

[0021] Furthermore, a drainage hole is provided at the bottom of the waterproof housing.

[0022] Furthermore, one end of the support block is connected to the outer wall of the waveguide tube, and the other end is fixedly connected to the adapter; the inner and outer conductors of the adapter are connected to the integrated circuit board.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present invention provides a positive-feed dish antenna integrated KU band high-frequency head, which has the following beneficial effects:

[0025] The positive feed dish antenna integrated high frequency head has upgraded waterproof performance by arranging a wave collector, a waveguide, an integrated isolation plate, a circuit box support block, an intelligent circuit box, an adapter, an integrated waterproof shell and a waterproof cover. It is not easy for water to enter when it rains, thereby reducing the product failure rate and prolonging the service life. In addition, the positive feed dish antenna integrated high frequency head can realize the reception and sharing of live broadcast satellite, third-generation set-top box and fourth-generation Beidou positioning set-top box signals, and output them together with satellite signals. The practicality of the positive feed dish antenna integrated high frequency head is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the shaft side structure of the present invention;

[0027] Figure 2 It is an axial cross-sectional view of the present invention;

[0028] Figure 3 for Figure 2 A schematic diagram of the axial side structure with a partial enlargement of point A shown in the figure.

[0029] Figure 4 It is a schematic diagram of the internal structure of the present invention (without shielding cover and integrated circuit board).

[0030] Figure 5 It is a schematic diagram of the internal convex structure of the waterproof housing in the present invention.

[0031] In the figure: 1. wave collector; 2. waveguide; 3. support block; 4. shielding cover; 5. adapter; 6. waterproof housing; 7. secondary reflection surface; 8. waterproof cover; 9. mounting plate; 10. isolation plate; 11. probe mounting slot; 12. probe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-4 The integrated high-frequency head of the forward-fed dish antenna of the present invention includes a wave collector 1, which is arranged in a circular shape. The antenna dish surface receives the signal and focuses and reflects the signal, and sends it to the secondary reflection surface. After the secondary reflection surface 7 reflects the signal for the second time, the signal enters the wave collector; a wave collector cavity is arranged in the middle of the wave collector 1.

[0034] A waveguide 2 is provided at the bottom of the wave collector 1, and an isolation plate 10 is provided in the middle of the bottom of the waveguide 2. The isolation plate 10 and the waveguide 2 are integrally designed and formed at one time, so that the signal receiving performance is stronger.

[0035] The bottom of the waveguide 2 is sealed, with a support block 3 on its side and a shielding cover 4 at the front end of the support block. The integrated circuit board is located between the shielding cover and the support block. The integrated circuit board is clamped by the shielding cover and the support block to achieve quick replacement and better grounding performance.

[0036] Specific reference Figure 4 In this embodiment, the support block is provided with a long slot hole as a probe installation slot 11, and the probe 12 is directly inserted into the long slot hole in a bent form to receive the signal. The integrated circuit board receives the signal through the probe, and after amplification and filtering, the feeder is transferred to the set-top box by the adapter to realize the reception of the signal; the adapter 5 can adopt a single output or multiple outputs, so as to facilitate use.

[0037] A waterproof shell 6 (made of polypropylene) is provided on the outside of the wave collector 1. A placement cavity is provided in the middle of the waterproof shell 6. The placement cavity cooperates with the wave collector 1, the waveguide 2, the support block 3 and the shielding cover. The top of the waterproof shell 6 is set in a cone shape. The waterproof shell 6 can be combined with an antenna dish with a larger diameter by increasing the length, so as to facilitate adjustment and use.

[0038] A secondary reflection surface 7 is arranged on the top of the waterproof shell 6, and the middle part of the secondary reflection surface 7 is arranged in a cone shape. A waterproof cover 8 is arranged on the top of the waterproof shell, and the waterproof cover 8 cooperates with the top of the waterproof shell 6. The waterproof cover 8 and the top of the waterproof shell 6 are connected with each other by snaps. A fixed mounting plate 9 is arranged on the side end of the waterproof shell 6, and a mounting screw hole is arranged in the middle part of each of the fixed mounting plates 9, so as to facilitate the fixation of the integrated high-frequency head of the positive feed dish antenna, and the waterproof performance of the integrated high-frequency head of the positive feed dish antenna is upgraded.

[0039] To sum up, when the positive feed dish antenna integrated high frequency head is in use and it rains, the waterproof shell 6 and the waterproof cover 8 will provide waterproof protection for the wave collector 1, the waveguide 2, the support block 3, the shielding cover 4 and the adapter 5, thereby reducing the failure rate of the product and improving the service life. In addition, the positive feed dish antenna integrated high frequency head can realize signal reception through the integrated circuit board, and the positive feed dish antenna integrated high frequency head is not prone to water ingress when it rains, thereby reducing the failure rate of the product and improving the service life. The positive feed dish antenna integrated high frequency head is more practical (performance improved).

[0040] Reference Figure 5In the waterproof shell, the upper part of the waterproof shell is a bowl-shaped structure, and its inner wall has a partition convexity, so that there is a gap between the outer wall of the wave collector in the waterproof shell and the inner wall of the waterproof shell, further reducing the probability of the waveguide being corroded.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positive feed dish antenna integrated high frequency head, comprising a waterproof housing, a wave collector and an integrated circuit board, characterized in that: The wave collector and the integrated circuit board are both located in a waterproof housing; The wave collector is in a circular structure, and a wave collecting cavity is provided in the middle of the wave collector; The bottom end of the wave collector is connected to a waveguide, and the wave collector cavity and the waveguide are connected; an isolation sheet is also provided at the bottom end of the waveguide, and the isolation sheet and the waveguide are designed as an integrated unit; a support block is provided on the outer side of the bottom of the waveguide, an integrated circuit board is provided on the support block, a shielding cover is provided on the outer side of the integrated circuit board, and the support block and the shielding cover are connected by screws; the integrated circuit board is located between the support block and the shielding cover, one end of the integrated circuit board extends into the waveguide through a probe, and the other end is connected to a converter; The adapter passes through the bottom of the waterproof shell; a secondary reflection surface is also provided in the waterproof shell, and the secondary reflection surface is located directly above the wave collecting cavity, and the central axes of the two coincide with each other; a waterproof cover is provided above the secondary reflection surface; the waterproof cover overlaps the waterproof shell to form a waterproof cavity.

2. The positive feed dish antenna integrated high frequency head according to claim 1, characterized in that: The middle part of the secondary reflection cover is arranged in a cone shape.

3. The high-frequency head integrated with a positive-feed dish antenna according to claim 1, characterized in that: The extending direction of the isolation sheet is parallel to the central axis of the waveguide; a step structure is provided at the top of the waveguide; and the step structure extends from one side of the top to the other side.

4. The positive feed dish antenna integrated high frequency head according to claim 1, characterized in that: A fixed installation plate (9) is arranged on the outer side of the waterproof housing, and a mounting screw hole is arranged in the middle of each fixed installation plate (9).

5. The KU band high-frequency head integrated with a positive-feed dish antenna according to claim 1, characterized in that: The waterproof cover is overlapped on the outer edge of the waterproof shell, and the two are connected by a buckle.

6. The positive feed dish antenna integrated high frequency head according to claim 1, characterized in that: The isolation plate and the waveguide are designed as an integrated unit; two probes are provided, which are respectively located on both sides of the isolation plate and face the isolation plate.

7. The positive feed dish antenna integrated high frequency head according to claim 6, characterized in that: The two probes are located on the same straight line.

8. The positive feed dish antenna integrated high frequency head according to claim 1, characterized in that: The bottom of the waterproof shell is provided with a drainage hole.

9. The positive feed dish antenna integrated high frequency head according to claim 1, characterized in that: One end of the support block is connected to the outer wall of the waveguide tube, and the other end is connected to the adapter; the inner and outer conductors of the adapter are connected to the integrated circuit board.

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