CN210518282U - Ku waveband satellite ground station receiving protector - Google Patents

Abstract

The utility model discloses a protector is received to Ku wave band satellite ground station, include: an antenna for receiving an external signal; signals received by the antenna are directly accessed to a duplexer of the LNB component through an antenna mechanical transmission mechanism; and a receiving protector for carrying out amplitude limiting on the high-power interference signal received by the antenna is arranged between the duplexer and the LNB component. The utility model provides a protector is received to Ku wave band satellite ground station, its LNB subassembly front end that can be in Ku wave band satellite ground station receiving link adds the protector, can effectively protect ground station not burnt by high-power interference signal, improves the anti ability of burning out of ground station reception.

Description

Ku waveband satellite ground station receiving protector

Technical Field

The utility model relates to a device that uses under the satellite communication condition. More specifically, the utility model relates to a Ku waveband satellite ground station reception protector for use under the Ku waveband satellite communication circumstances.

Background

Any one of the satellite communication lines includes originating and terminating ground stations, uplink and downlink lines, and a satellite communication repeater. It can be seen that ground stations are an important component in satellite communication systems. The ground station basically functions to transmit signals to the satellite while receiving signals retransmitted by other ground stations via the satellite.

At present, the front-end circuit of the receiving link of the satellite ground station is that a signal received by an antenna is directly accessed to an LNB component through a duplexer, and the connection schematic diagram is shown in fig. 8-9 by structural schematic diagrams. In today's complex electromagnetic environment, satellite ground stations are susceptible to malicious electromagnetic interference from ambient microwave signals or hostile forces. The most serious interference is in-band interference, and the LNB component of the satellite ground station can be burnt out due to the excessive power of the in-band interference signal, so that the satellite ground station is paralyzed.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

The utility model discloses still another purpose provides a protector is received to Ku wave band satellite ground station, its LNB subassembly front end that can be in Ku wave band satellite ground station receiving link adds the protector, can effectively protect ground station not burnt by high-power interfering signal, improves the anti ability of burning out of ground station reception.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a Ku band satellite ground station reception protector, comprising:

an antenna for receiving an external signal;

signals received by the antenna are directly accessed to a duplexer of the LNB component through an antenna mechanical transmission mechanism;

and a receiving protector for carrying out amplitude limiting on the high-power interference signal received by the antenna is arranged between the duplexer and the LNB component.

Preferably, the receiving protector is configured to include a limiting circuit, and a WR75 waveguide to microstrip circuit and a microstrip to WR75 waveguide circuit disposed at input and output ends of the limiting circuit.

Preferably, the WR75 waveguide is converted into a microstrip circuit, the microstrip is converted into a WR75 waveguide circuit, the frequency range is configured to cover 12.25 GHz-12.75 GHz, and the frequency range is configured to adopt a narrow band or a wide band.

Preferably, the clipping circuit is configured to include:

the port blocking mechanism is respectively matched with the output end and the input end of the WR75 waveguide-to-microstrip circuit and the WR75 waveguide circuit;

at least two microstrip lines which are arranged between the port blocking mechanisms in series;

the two ends of each microstrip line are respectively arranged at intervals to form limiting diodes with at least three-stage limiting function, and each limiting diode is configured to be grounded;

the limiting diode at the first stage is also provided with a matching inductance configured to ground to form a dc loop.

Preferably, wherein the blocking mechanism is configured to employ a capacitance;

the types of the limiting diodes are respectively configured to be MA4L401-134, MA4L101-134 and MA4L032-134, so that the limiting limit output is in a three-level decreasing state.

Preferably, the two ends of the receiving protector are further respectively provided with a mounting end for matching with the duplexer and the LNB module, and a matching mounting hole is formed in the mounting end.

The utility model discloses at least, include following beneficial effect: an one, the utility model discloses add the protector at the LNB subassembly front end in Ku wave band satellite ground station receiving link, can effectively protect ground station not burnt by high-power interference signal, improve the anti ability of burning out of ground station reception.

And secondly, the utility model discloses a structural design to the amplitude limiting circuit for the cost of protector is controllable, further makes Ku wave band satellite ground station can adapt to high-power signal reception's use occasion and use needs.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a block diagram of a receiving protector combined with a Ku-band satellite ground station according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a receive protector according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a limiting circuit in the receiver-protector according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating comparison of the performance of each limiting diode according to an embodiment of the present invention;

fig. 5 is a left side view schematically illustrating the structure of the receiver-protector according to an embodiment of the present invention;

fig. 6 is a schematic front view of a receiver-protector according to another embodiment of the present invention;

FIG. 7 is a schematic view of a satellite ground station equipped with a receiver-protector;

FIG. 8 is a schematic block diagram of a prior art satellite ground station architecture connection;

fig. 9 is a schematic structural diagram of a satellite ground station in the prior art.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Fig. 1 and 7 show an implementation form of a Ku waveband satellite ground station receiving protector according to the utility model, which includes:

an antenna 1 for receiving an external signal;

signals received by the antenna are directly accessed to the duplexer 5 of the LNB component 3 through the antenna mechanical transmission mechanism 2, and the signals are received by the antenna;

the schematic diagram of the Ku waveband satellite ground station receiving protector accessing the satellite ground station is shown in figure 1, the accessing position is between the LNB component and the duplexer, the high-power electromagnetic interference signal enters the receiving protector through the antenna surface and the duplexer, and the receiving protector carries out an amplitude limiting treatment instrument on the high-power interference signal in the band so as to protect the LNB component from being burnt. In the scheme, the protector is added at the front end of the LNB component in the receiving link of the Ku-band satellite ground station, so that the ground station can be effectively protected from being burnt by high-power interference signals, and the receiving anti-burning capacity of the ground station is improved.

As shown in fig. 2 and 6, in another example, the receiving protector is configured to include a limiting circuit 6, and a WR75 waveguide-to-microstrip circuit 7 and a microstrip-to-WR 75 waveguide circuit 8 disposed at the input and output ends of the limiting circuit, in this scheme, the WR75 waveguide-to-microstrip circuit and the microstrip-to-WR 75 waveguide circuit belong to the prior art, and are used for converting signals into signals recognizable by microstrip lines for limiting, and converting and outputting the limited signals for identification by devices in a satellite terminal, and only adjusting the signals according to different adaptability and model types, the structure of the receiving protector can be selected according to requirements as the structure in the patent number CN201710479958.7, the patent name as Ka-band microstrip waveguide converting circuit, and can also be selected similarly as the structure in the patent number CN201811198101.9, the patent name as waveguide coaxial microstrip converting circuit, and the limiting circuit is used for limiting the received signals, therefore, the amplitude limiting circuit can be in accordance with the range of the acceptable amplitude of the LNB component, the service life of the LNB component is further ensured, the cost of the protector is controllable due to the amplitude limiting circuit, and the Ku-band satellite ground station can adapt to the use requirement of the high-power signal receiving condition.

In another example, the WR75 waveguide-to-microstrip circuit and the microstrip-to-WR 75 waveguide circuit are configured to adopt a narrow band or a wide band, and the frequency range thereof is configured to cover 12.25 GHz-12.75 GHz, in this scheme, the WR75 waveguide-to-microstrip circuit and the microstrip-to-WR 75 waveguide circuit can respectively pass through the narrow band or the wide band, so that the frequency range thereof covers 12.25 GHz-12.75 GHz.

As shown in fig. 3, in another example, the clipping circuit is configured to include:

the port blocking mechanisms 9 and 10 are respectively matched with the output end and the input end of the WR75 waveguide-to-microstrip circuit and the output end and the input end of the WR75 waveguide circuit and are used for isolating direct current so that the output of the WR75 waveguide circuit meets the requirements of an amplitude limiting circuit;

at least two microstrip lines 11, 12 are connected in series between the port blocking mechanisms, and the microstrip line is a microwave transmission line formed by a single conductor strip supported on a dielectric substrate. The planar structure transmission line is suitable for manufacturing microwave integrated circuits, and compared with metal waveguides, the planar structure transmission line is small in size, light in weight, wide in using frequency band, high in reliability, low in manufacturing cost and the like;

the limiting diodes are respectively arranged at two ends of each microstrip line at intervals to form limiting diodes 13, 14 and 15 with at least three-level limiting function, and each limiting diode is configured to be grounded and used for forming multi-level limiting through a plurality of limiting diodes so that the output of the limiting diodes is controlled within the receivable range of the LNB component, the service life of the limiting diodes is further ensured, and the limiting diodes are prevented from being burnt;

the limiter diode located at the first stage is further provided with a matched inductor 16 configured to be grounded to form a direct current loop, and the direct current loop is matched with the limiter diode located at the first stage through direct current backflow, so that the first stage limiting effect is remarkably increased, the output of the first stage limiting diode is controlled within the controllable range of the other two diodes located behind, and the use effect of the first stage limiting diode is guaranteed to meet the requirement under the condition that the cost is controllable.

In another example, the blocking mechanism is configured to adopt a capacitor, which is used for controlling the cost thereof through a simple structural design, and the blocking effect meets the requirement;

the types of the limiting diodes are respectively configured to be MA4L401-134, MA4L101-134 and MA4L032-134, so that the limiting limit output is in a three-level decreasing state, after the limiting is performed on the diodes at all levels, the cost of the diode at the rear level is controllable, the effect is in a preset range, the use requirement is met, and the performance parameters of the limiting diodes at all levels can be as shown in FIG. 4.

In another example, as shown in fig. 5-6, the two ends of the receiving protector are further respectively provided with a mounting end 16 for cooperating with the duplexer and the LNB module, and a cooperating mounting hole 17 is provided thereon for implementing connection between the protector and the LNB module and the duplexer on the satellite ground terminal, thereby ensuring connection stability between devices.

The above embodiments are merely illustrative of a preferred embodiment, but not limiting. When the utility model is implemented, the proper replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the Ku-band satellite earth station receiver protector of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (6)

1. A Ku band satellite earth station receiving protector, comprising:

an antenna for receiving an external signal;

signals received by the antenna are directly accessed to a duplexer of the LNB component through an antenna mechanical transmission mechanism;

and a receiving protector for carrying out amplitude limiting on the high-power interference signal received by the antenna is arranged between the duplexer and the LNB component.

2. The Ku band satellite ground station receive protector as claimed in claim 1, wherein the receive protector is configured to include a limiting circuit, and a WR75 waveguide to microstrip circuit, a microstrip to WR75 waveguide circuit disposed at an input and an output of the limiting circuit.

3. The Ku band satellite ground station receive protector as claimed in claim 2, wherein the WR75 waveguide to microstrip circuit, the microstrip to WR75 waveguide circuit, is configured to employ a narrowband or broadband, and the frequency range is configured to cover within 12.25GHz to 12.75 GHz.

4. The Ku band satellite ground station reception protector of claim 2, wherein the clipping circuit is configured to comprise:

the port blocking mechanism is respectively matched with the output end and the input end of the WR75 waveguide-to-microstrip circuit and the WR75 waveguide circuit;

at least two microstrip lines which are arranged between the port blocking mechanisms in series;

the two ends of each microstrip line are respectively arranged at intervals to form limiting diodes with at least three-stage limiting function, and each limiting diode is configured to be grounded;

the limiting diode at the first stage is also provided with a matching inductance configured to ground to form a dc loop.

5. The Ku band satellite earth station reception protector of claim 4, wherein the dc blocking mechanism is configured to employ a capacitor;

the types of the limiting diodes are respectively configured to be MA4L401-134, MA4L101-134 and MA4L032-134, so that the limiting limit output is in a three-level decreasing state.

6. The Ku band satellite earth station receiver protector as claimed in claim 1, wherein the receiver protector further comprises mounting ends for mating with the duplexer and the LNB module, respectively, and the mounting ends are provided with mating mounting holes.

Images