High-frequency antenna feeder signal lightning protection device with low residual voltage

Abstract

The utility model discloses a high-frequency antenna feeder signal lightning protection device with low residual voltage. The high-frequency antenna feeder signal lightning protection device comprises a gas discharge tube GAS, a TVS tube TVS, an air core inductor L1, an air core inductor L2, a magnetic rod inductor L3, a magnetic rod inductor L4, a high-frequency capacitor C, a piezoresistor MOV, an input connector J1 and an output connector J2. The beneficial effects of the utility model lie in that the high-frequency capacitor is connected in series in the feeder line, so that a 0.8-2.6 GHz high-frequency signal can pass smoothly, and the attenuation of the signal is very small; a lightning protection circuit is composed of a gas discharge tube, an inductor, a piezoresistor and a TVS tube, energy discharge can be carried out on low-frequency-band lightning current, and the lightning current can be effectively prevented from flowing to an equipment end. The antenna has the advantages of good protection effect, low residual voltage and the like, can transmit power simultaneously, and is suitable for occasions with or without an amplifier.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency antenna feed signal surge protectors, in particular to a high-frequency antenna feed signal lightning protection device with low residual voltage. Background Art

[0002] In the current high-frequency antenna signal communication system, a high-frequency antenna feed gas discharge tube type lightning arrester is installed at the entrance of the antenna. In order to ensure the integrity of the high-frequency communication signal, this type of lightning arrester can only use a gas discharge tube with very small junction capacitance. Since the gas ionization requires a certain amount of time, the response speed is slow. The reaction time is generally 0.2~0.3μs (200~300ns), and the fastest is about 0.1μs (100ns). Before it is turned on, a large-amplitude sharp pulse will leak through, which can easily cause damage to the back-end equipment.

[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a high-frequency antenna feed signal lightning protection device with low residual voltage.

[0005] The technical solution of the utility model is as follows: The utility model provides a high-frequency antenna signal lightning protection device with low residual voltage, including: a gas discharge tube GAS, a TVS tube TVS, an air-core inductor L1, an air-core inductor L2, a magnetic rod inductor L3, a magnetic rod inductor L4, a high-frequency capacitor C, a varistor MOV, an input connector J1 and an output connector J2, one end of the high-frequency capacitor C is electrically connected to the input connector J1 and one end of the air-core inductor respectively, and the other end of the high-frequency capacitor C is electrically connected to the output connector J2 and one end of the air-core inductor L2 respectively. The other end of the air-core inductor is electrically connected to one end of the magnetic bar inductor L3 and one end of the gas discharge tube GAS respectively; the other end of the magnetic bar inductor L3 is electrically connected to one end of the varistor and one end of the magnetic bar inductor L4 respectively; the other end of the magnetic bar inductor L4 is electrically connected to the other end of the air-core inductor L2 and one end of the TVS tube TVS respectively; the other end of the gas discharge tube GAS, the other end of the varistor MOV, and the other end of the TVS tube TVS are electrically connected to the PE ground terminal respectively.

[0006] Furthermore, the scheme also includes a shell assembly, in which a accommodating space is formed, and the gas discharge tube GAS, TVS tube TVS, air-core inductor L1, air-core inductor L2, magnetic rod inductor L3, high-frequency capacitor C and varistor MOV are all arranged in the accommodating space of the shell assembly, and the input connector J1 and the output connector J2 are respectively arranged on two opposite ends of the shell assembly.

[0007] Furthermore, the housing assembly includes a main housing and a cover plate, the cover plate is arranged on the opening of the main housing by screw fastening, and a waterproof sealing ring is also arranged between the main housing and the cover plate.

[0008] Furthermore, the input connector J1 and the output connector J2 are respectively arranged on the housing assembly by screw fastening, a waterproof sealing ring is provided between the input connector J1 and the housing assembly, and a waterproof sealing ring is provided between the output connector J2 and the housing assembly.

[0009] By adopting the above scheme, the beneficial effect of the utility model is that: by setting a high-frequency capacitor in series in the feeder, the high-frequency signal of 0.8-2.6GHz can pass smoothly, and the signal attenuation is very small; the lightning protection circuit composed of a gas discharge tube, an inductor, a varistor and a TVS tube can discharge the energy of the low-frequency lightning current and effectively prevent the lightning current from flowing to the equipment end; it has the advantages of good protection effect and low residual pressure, and can transmit power at the same time, and is suitable for occasions where the antenna is with or without an amplifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A circuit diagram of an embodiment of the utility model

[0011] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0012] Figure 3 It is an exploded view of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Please refer to Figures 1 to 3In this embodiment, the utility model provides a high-frequency antenna signal lightning protection device with low residual voltage, including: a gas discharge tube GAS, a TVS tube TVS, an air-core inductor L1, an air-core inductor L2, a magnetic rod inductor L3, a magnetic rod inductor L4, a high-frequency capacitor C, a varistor MOV, an input connector J1 and an output connector J2, one end of the high-frequency capacitor C is electrically connected to the input connector J1 and one end of the air-core inductor respectively, and the other end of the high-frequency capacitor C is electrically connected to the output connector J2 and one end of the air-core inductor L2 respectively. The other end of the air-core inductor is electrically connected to one end of the magnetic bar inductor L3 and one end of the gas discharge tube GAS, the other end of the magnetic bar inductor L3 is electrically connected to one end of the varistor and one end of the magnetic bar inductor L4, the other end of the magnetic bar inductor L4 is electrically connected to the other end of the air-core inductor L2 and one end of the TVS tube TVS, the other end of the gas discharge tube GAS, the other end of the varistor MOV, and the other end of the TVS tube TVS are electrically connected to the PE ground terminal.

[0015] Furthermore, the scheme also includes a shell component 1, in which a accommodating space is formed, and the gas discharge tube GAS, TVS tube TVS, air-core inductor L1, air-core inductor L2, magnetic rod inductor L3, high-frequency capacitor C and varistor MOV are all arranged in the accommodating space of the shell component 1, and the input connector J1 and the output connector J2 are respectively arranged on two opposite ends of the shell component.

[0016] Furthermore, the shell assembly 1 includes a main shell 11 and a cover plate 12. The cover plate 12 is arranged on the opening of the main shell 1 by screw fastening. A waterproof sealing ring is also arranged between the main shell 11 and the cover plate 12. The shell assembly 1 is made of aluminum alloy.

[0017] Furthermore, the input connector J1 and the output connector J2 are respectively arranged on the housing assembly 1 by screw fastening, a waterproof sealing ring is provided between the input connector J1 and the housing assembly 1, and a waterproof sealing ring is provided between the output connector J2 and the housing assembly 1.

[0018] Please continue to refer to Figures 1 to 3In this solution, when a lightning strike occurs, since the energy spectrum of the lightning strike cannot pass through the high-frequency capacitor C, the lightning strike energy is mainly concentrated in 100Hz-100KHz, and the low-frequency lightning strike current is discharged through the hollow inductor L1-gas discharge tube GAS-PE ground end path. The remaining small amount of lightning strike current can be discharged through the hollow inductor L2-varistor MOV-PE ground end path, and then discharged through the magnetic rod inductor L3, TVS tube TVS, and PE ground end path, further reducing the residual pressure of the lightning strike current, improving the response speed of the protection, and effectively and reliably protecting the safe operation of the back-end equipment. .

[0019] In summary, the beneficial effect of this solution is that by setting a high-frequency capacitor in series in the feeder, the high-frequency signal of 0.8-2.6GHz can pass smoothly, and the signal attenuation is very small; the lightning protection circuit composed of a gas discharge tube, an inductor, a varistor and a TVS tube can discharge the energy of the low-frequency lightning current and effectively prevent the lightning current from flowing to the equipment end; it has the advantages of good protection effect and low residual pressure, and can transmit power at the same time, which is suitable for occasions where the antenna is with or without an amplifier.

[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-frequency antenna signal lightning protection device with low residual voltage, characterized in that: include: Gas discharge tube GAS, TVS tube TVS, air-core inductor L1, air-core inductor L2, magnetic rod inductor L3, magnetic rod inductor L4, high-frequency capacitor C, varistor MOV, input connector J1 and output connector J2, one end of the high-frequency capacitor C is electrically connected to the input connector J1 and one end of the air-core inductor respectively, the other end of the high-frequency capacitor C is electrically connected to the output connector J2 and one end of the air-core inductor L2 respectively, the other end of the air-core inductor is electrically connected to one end of the magnetic rod inductor L3 and one end of the gas discharge tube GAS respectively, the other end of the magnetic rod inductor L3 is electrically connected to one end of the varistor and one end of the magnetic rod inductor L4 respectively, the other end of the magnetic rod inductor L4 is electrically connected to the other end of the air-core inductor L2 and one end of the TVS tube TVS respectively, the other end of the gas discharge tube GAS, the other end of the varistor MOV and the other end of the TVS tube TVS are electrically connected to the PE ground terminal respectively.

2. The high-frequency antenna signal lightning protection device with low residual voltage according to claim 1, characterized in that: It also includes a shell component, which has an accommodating space formed therein. The gas discharge tube GAS, TVS tube TVS, air-core inductor L1, air-core inductor L2, magnetic rod inductor L3, high-frequency capacitor C and varistor MOV are all arranged in the accommodating space of the shell component, and the input connector J1 and the output connector J2 are respectively arranged on two opposite ends of the shell component.

3. The high-frequency antenna signal lightning protection device with low residual voltage according to claim 2, characterized in that: The housing assembly comprises a main housing and a cover plate. The cover plate is arranged on the opening of the main housing by screw fastening. A waterproof sealing ring is also arranged between the main housing and the cover plate.

4. The high-frequency antenna signal lightning protection device with low residual voltage according to claim 2, characterized in that: The input connector J1 and the output connector J2 are respectively arranged on the housing assembly by screw fastening, and a waterproof sealing ring is also arranged between the input connector J1 and the housing assembly, and a waterproof sealing ring is also arranged between the output connector J2 and the housing assembly.

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