C-band DPOM main body structure

Abstract

The utility model relates to the technical field of amplifiers, and discloses a C-band DPOM main body structure which comprises a body, a circular resonance cavity is formed in the body, one end of the circular resonance cavity penetrates through the bottom of the body, two probe mounting holes are formed in the circular resonance cavity, and the other end of the circular resonance cavity penetrates through the bottom of the body. Signals are input through the circular resonance cavity, the transmission loss of the circular resonance cavity is small, noise outside an effective frequency band can be effectively filtered out after satellite television downlink signals pass through the circular resonance cavity, and extremely high anti-interference capacity can be achieved. And through the structural design, the C-band DPOM main body structure has the characteristics of small size, low cost and easiness in assembly, and has relatively strong filtering and anti-interference effects in a complex electromagnetic environment.

Description

Technical Field

[0001] The present application relates to the technical field of amplifiers, in particular to a low-noise frequency-reduction amplifier, and specifically to a C-band DPOM main structure. Background Art

[0002] An LNB (low noise block downconverter) is a low-noise, frequency-reducing amplifier (RFA) consisting of a mixer and a local oscillator. LNBs are generally categorized as C-band LNBs (3.4-4.2 GHz) and KU-band LNBs (10.7-12.75 GHz). Because satellite signals are already quite weak before reaching the antenna, and because higher frequencies transmitted via coaxial cables experience greater signal loss, an LNB is needed to amplify them while minimizing signal-to-noise ratio degradation. The LNB first amplifies the high-frequency satellite signal. Then, using a local oscillator circuit (with an intermediate frequency range determined by the LNB type), the high-frequency satellite signal is converted to an intermediate frequency (IF) of 950-2150 MHz and amplified again for coaxial cable transmission and demodulation by the satellite receiver.

[0003] Traditional LNBs have the problems of being bulky, resource-intensive, having complex manufacturing processes, poor moisture-proofing, and being too expensive. Utility Model Content

[0004] The purpose of this application is to provide a C-band DPOM main structure to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present application discloses the following technical solutions: a C-band DPOM main structure, comprising a main body, the interior of the main body having a circular resonance cavity, and the main body also having a PCB placement plane, one end of the circular resonance cavity passing through the bottom of the main body, two probe mounting holes being provided in the circular resonance cavity, the circular resonance cavity being connected to the PCB placement plane through the two probe mounting holes, a circuit board being provided in the PCB placement plane, the bottom surface of the circuit board being connected to the bottom of the PCB placement plane, and a shielding cover being further provided on the circuit board, the top surface of the circuit board being connected to the bottom of the shielding cover, a polarization isolation rod being provided in the circular resonance cavity, and the polarization isolation rod being located in the middle position of the PCB placement plane.

[0006] Preferably, a circuit board fixing hole and a cover plate fixing hole are provided on the main body, the circuit board fixing hole is used to fix the shielding cover and the circuit board, and the cover plate fixing hole is used to fix the cover plate.

[0007] Preferably, a plurality of fixing screw holes are provided on the PCB placement plane, and each of the fixing screw holes is movably connected to a self-tapping screw.

[0008] Preferably, the cover is arranged above the PCB and the shielding cover, and the cover is connected to the body through a plurality of the self-tapping screws.

[0009] Preferably, the main structure further includes two polarization needles, one end of each polarization needle is inserted into the probe mounting hole, and the other end extends to the PCB.

[0010] Preferably, an F-connector output hole is provided on a side wall of the PCB placement plane, and the F-connector output hole is communicated with the PCB placement plane.

[0011] Preferably, a signal focus scale is provided on the body, and the signal focus scale is provided on the side of the body.

[0012] Preferably, the signal focus scale is a scale groove.

[0013] Preferably, the body is provided with polarization scale lines, and the polarization scale lines are provided below the F-head of the body.

[0014] Preferably, the polarization scale lines are scale grooves.

[0015] Beneficial Effects: The C-band DPOM main structure of this application utilizes a circular resonance cavity for signal input, and the circular resonance cavity has low transmission loss. After the satellite TV downlink signal passes through the circular resonance cavity, it can effectively filter out noise outside the effective frequency band, achieving extremely high anti-interference capabilities. Based on the structural design of this application, the entire C-band DPOM main structure has a moderate volume and can provide strong filtering and anti-interference capabilities in complex electromagnetic environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the C-band DPOM main structure provided in an embodiment of the present application;

[0018] Figure 2 An exploded diagram of the main structure of the C-band DPOM provided in an embodiment of the present application;

[0019] Figure 3 These are the top view and right view of the main body of the C-band DPOM main structure provided in the embodiment of the present application.

[0020] Figure numerals: 100, main body; 101, signal focus scale; 103, polarization scale line; 110, circular resonance cavity; 120, PCB placement plane; 131, fixing screw hole; 150, probe mounting hole; 300, circuit board; 200, shielding cover; 600, polarization isolation rod; 400, cover plate; 500, self-tapping screw; 122, F-head output hole; 700, F connector; 900, polarization needle. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] In this document, the term "comprising" is intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0023] See also Figure 1-3

[0024] This embodiment discloses a C-band DPOM main structure, comprising a main body 100. The main body 100 includes a circular resonance chamber 110, which is also provided with a PCB placement surface 120. One end of the circular resonance chamber 110 extends through the bottom of the main body 100. Two probe mounting holes 150 are defined within the circular resonance chamber 110, connecting the circular resonance chamber 110 to the PCB placement surface 120 through the two probe mounting holes 150. A circuit board 300 is disposed within the PCB placement surface 120. The bottom surface of the circuit board 300 is connected to the bottom of the PCB placement surface 120, and the top surface is connected to the bottom of the shielding cover 200. A polarization isolation rod 600 is disposed within the circular resonance chamber 110. The polarization isolation rod 600 is located in the center of the PCB placement surface 120, enabling it to isolate vertical and horizontal signals based on the polarity of the received satellite signal. In this embodiment, the circular resonance chamber 110 has a circular cross-section; in other words, the circular resonance chamber 110 is a single circular cavity. The signal is input through the circular resonance cavity 110, and the circular resonance cavity reduces signal transmission loss. After the satellite TV downlink signal passes through the circular resonance cavity 110, it can effectively filter out noise outside the effective frequency band, achieving extremely high anti-interference ability.

[0025] Specifically, the main body 100 is provided with a signal focus scale 101, which is arranged on the side of the main body 100 and is a graduated groove. When the product is mounted on the bracket of the forward-feed antenna, the opening of the circular resonance cavity 110 of the main body 100 is adjusted so that it is exactly at the focus of the antenna. In other words, the scale position of the signal focus scale 101 is used to complete this operation.

[0026] In summary, the C-band DPOM main structure of this embodiment uses circular resonant cavity 110 to input signals. The circular resonant cavity 110 has low transmission loss. After the satellite TV downlink signal passes through circular resonant cavity 110, it effectively filters out noise outside the effective frequency band, achieving extremely high anti-interference capabilities. Furthermore, this structural design ensures that the C-band DPOM main structure is of moderate size and exhibits strong filtering and anti-interference capabilities in complex electromagnetic environments.

[0027] As a preferred embodiment of this embodiment, polarization scale lines 103 are provided on the main body 100. Polarization scale lines 103 are located below the F-connector of the main body 100 (i.e., below the F-connector output port 122), and polarization scale lines 103 are scale grooves. Polarization scale lines 103 are used to adjust the opening of the circular resonance cavity 110 of the main body 100 to the polarization position of the antenna when the product is mounted on the bracket of the forward-feed antenna. This is accomplished by using the scale position of polarization scale lines 103.

[0028] In one embodiment, the body 100 is provided with holes for securing a circuit board and a cover. The holes are used to secure the circuit board 300 and shielding cover 200, while the holes are used to secure the cover 400. The PCB placement surface 120 is provided with a plurality of screw holes 131, each of which is movably connected to a self-tapping screw 500. The cover 400 is mounted on the circuit board 300 and shielding cover 200 and is connected to the body 100 via a plurality of self-tapping screws 500.

[0029] In one embodiment, an F-connector output hole 122 is defined on a sidewall of the PCB mounting surface 120 and communicates with the PCB mounting surface 120. Specifically, an F-connector 700 is disposed within the F-connector output hole 122. The C-band DPOM main structure of this embodiment also includes two polarization pins 900. Each polarization pin 900 partially extends through a probe mounting hole 150, with its other end positioned within the circular resonance cavity 110.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A C-band DPOM main structure, characterized in that: The invention comprises a body (100), wherein the interior of the body (100) is provided with a circular resonance cavity (110), and the body (100) is further provided with a PCB placement plane (120), one end of the circular resonance cavity (110) passes through the bottom of the body (100), and two probe mounting holes (150) are provided in the circular resonance cavity (110), and the circular resonance cavity (110) is communicated with the PCB placement plane (120) through the two probe mounting holes (150), and the PCB is placed on the PCB. A circuit board (300) is provided in the B placement plane (120), the bottom surface of the circuit board (300) is connected to the bottom of the PCB placement plane (120), and a shielding cover (200) is further provided on the circuit board (300), the top surface of the circuit board (300) is connected to the bottom of the shielding cover (200), and a polarization isolation rod (600) is provided in the circular resonance cavity (110), and the polarization isolation rod (600) is located in the middle position of the PCB placement plane (120).

2. The C-band DPOM main structure according to claim 1, characterized in that: The body (100) is provided with a circuit board fixing hole and a cover plate fixing hole. The circuit board fixing hole is used to fix the shielding cover (200) and the circuit board (300), and the cover plate fixing hole is used to fix the cover plate (400).

3. The C-band DPOM main structure according to claim 2, characterized in that: A plurality of fixing screw holes (131) are provided on the PCB placement plane (120), and each of the fixing screw holes (131) is movably connected to a self-tapping screw (500).

4. The C-band DPOM main structure according to claim 3, characterized in that: The cover plate (400) is arranged above the PCB (300) and the shielding cover (200), and the cover plate (400) is connected to the body (100) via a plurality of self-tapping screws (500).

5. The C-band DPOM main structure according to claim 1, characterized in that: The main structure further comprises two polarization needles (900), one end of each polarization needle (900) is inserted into the probe mounting hole (150), and the other end extends onto the PCB (300).

6. The C-band DPOM main structure according to claim 1, characterized in that: An F-head output hole (122) is provided on the side wall of the PCB placement plane (120), and the F-head output hole (122) is communicated with the PCB placement plane (120).

7. The C-band DPOM main structure according to claim 1, characterized in that: A signal focus scale (101) is provided on the body (100), and the signal focus scale (101) is provided on a side surface of the body (100).

8. The C-band DPOM main structure according to claim 7, characterized in that: The signal focus scale (101) is a scale groove.

9. The C-band DPOM main structure according to claim 1, characterized in that: The body (100) is provided with a polarization scale line (103), and the polarization scale line (103) is provided below the F-head of the body (100).

10. The C-band DPOM main structure according to claim 9, characterized in that: The polarization scale lines (103) are scale grooves.

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