Ku wave band duplexer

Abstract

The utility model discloses a Ku wave band duplexer, which comprises a main cavity, and is characterized in that the main cavity is a rectangular box body, a public port is arranged on the main cavity, a public coupling block is arranged at the position of the public port corresponding to a cover plate, and the public coupling block can shunt signals coupled by the public port to a transmitting channel and a receiving channel. The transmitting end and the receiving end of the duplexer realize a coaxial interface; according to the utility model, through the internal structure of the main cavity, the transmitting end and the receiving end of the duplexer are coaxial interfaces under the condition that the size of the Ku wave band duplexer is the same, so that a waveguide coaxial converter is omitted, parts applied to a communication system are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of communication equipment technology, and in particular to a Ku-band duplexer. Background Technology

[0002] A duplexer is a microwave passive device that can separate or combine transmit and receive signals. It is widely used in antenna feeding systems. Its function is to divide a common channel into two channels with different frequencies and a certain degree of isolation, or to combine two channels with different frequencies and a certain degree of isolation into a common channel. The two channels do not interfere with each other during operation. The performance of the duplexer plays a crucial role in the entire communication system.

[0003] In existing technologies, both the transmit and receive channels of Ku-band duplexers use waveguide interfaces. However, most other components connected to the waveguide duplexer in communication system equipment use coaxial interfaces. Therefore, in final use, a waveguide-to-coaxial converter must be added to both the transmit and receive ports to convert the transmission method from waveguide to coaxial. This significantly increases the cost of the communication system equipment and adds an extra installation step during system assembly, thus reducing production efficiency. Utility Model Content

[0004] In order to overcome the structural defects of the prior art, this utility model provides a Ku-band duplexer.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a Ku-band duplexer, including a main cavity, characterized in that: the main cavity is a rectangular box, and a common port is provided on the main cavity. A common coupling block is installed at the position of the common port and the corresponding cover plate, which can split the signal coupled in by the common port to the transmitting channel and the receiving channel, so that the transmitting end and the receiving end of the duplexer realize a coaxial interface.

[0006] Preferably, the main cavity is provided with a transmission channel having 8 transmission resonant cavities, and the top of the transmission resonant cavity is connected to one side of the common coupling block of the common port, and the end of the transmission resonant cavity is connected to the transmission end.

[0007] Preferably, the eight transmitting resonant cavities of the transmitting channel are arranged equidistantly in sequence, and each transmitting resonant cavity has a coupling partition wall on both sides in sequence, with a coupling window vertically opened in the coupling partition wall to form a transmitting filter.

[0008] Preferably, the main cavity has 10 receiving resonant cavities in its receiving channel. The top of each receiving resonant cavity is connected to the other side of a common coupling block of a common port, and the end of each receiving resonant cavity is connected to a receiving end. The 10 receiving resonant cavities in the receiving channel are arranged equidistantly in sequence. Each receiving resonant cavity has coupling partitions on both sides, and the coupling partitions have coupling windows opened laterally to form a receiving filter. Preferably, the main cavity is provided with a cover plate, which is a rectangular flat plate and is connected to the main cavity via a coaxial connector. Flanges are fixedly connected to the left and right ends of the bottom center of the main cavity.

[0009] Preferably, the transmitting end is located at the end inside the main cavity, and the transmitting end is provided with a first transmitting conversion step. A second transmitting conversion step is fixedly connected to the first transmitting conversion step. The second transmitting conversion step is provided with a coaxial inner core grounding hole, and the coaxial inner core grounding hole penetrates the second transmitting conversion step.

[0010] Preferably, the receiving end is located at the top of the main cavity, and the receiving end is provided with a receiving conversion step one. The receiving conversion step one is provided with a receiving conversion step two and a receiving conversion boss, and the receiving conversion step two and the receiving conversion boss are on the same axis. The receiving conversion step two is provided with a coaxial inner core grounding hole, and the coaxial inner core grounding hole penetrates the transmitting conversion step two.

[0011] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0012] The main cavity of this invention is provided with a transmitting channel and a receiving channel at its upper and lower ends. Thus, for the same size Ku-band duplexer, the transmitting end and the receiving end of the duplexer have a coaxial interface, eliminating the need for a waveguide coaxial converter, reducing the number of components used in the communication system, and improving working efficiency.

[0013] This utility model features a debugging-free structural design, and the transmitting and receiving ports are coaxially directly matched to connect the system equipment. The duplexer has more stable performance and better reliability, and the production process is simple to operate, thus greatly reducing production costs and improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a partial internal schematic diagram of the present invention;

[0015] Figure 2 This is a front view of the present utility model;

[0016] Figure 3 This is a side view of the present invention;

[0017] Figure 4 This utility model relates to a coaxial connector.

[0018] The components are: 1. Main cavity; 2. Common port; 3. Common coupling block; 4. Transmitting channel; 5. Transmitting resonant cavity; 6. Transmitting end; 7. Coupling partition; 8. Coupling window; 9. Receiving channel; 10. Receiving resonant cavity; 11. Receiving end; 12. Cover plate; 13. Coaxial connector; 14. Flange; 15. Transmitting conversion step one; 16. Transmitting conversion step two; 17. Coaxial inner core grounding hole; 18. Receiving conversion step one; 19. Receiving conversion step two; 20. Receiving conversion boss; Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified. Example

[0020] As shown in the figure, this utility model provides a Ku-band duplexer, including a main cavity (1). The main cavity 1 is a rectangular box, and a common port 2 is provided on the main cavity 1. A common coupling block 3 is installed at the position of the common port 2 and the corresponding cover plate 12. This common coupling block 3 is used to split the signal coupled in through the common port to the transmitting channel 4 and the receiving channel 9, enabling the transmitting end 6 and the receiving end 11 of the duplexer to achieve a coaxial interface. The common coupling block 3 is fixed to the cover plate 12 by fixing screws. Furthermore, its common port 2 is a WR75 (BJ120) standard waveguide interface, and the flange 14 is an FBP120 square flange.

[0021] In this embodiment, specifically, the main cavity 1 is provided with a transmission channel 4 with 8 transmission resonant cavities 5, and the top of the transmission resonant cavity 5 is connected to one side of the common coupling block 3 of the common port 2, and the end of the transmission resonant cavity 5 is connected to the transmission end 6.

[0022] In this embodiment, specifically, the eight transmitting resonant cavities 5 of the transmitting channel 4 are arranged equidistantly in sequence, and each transmitting resonant cavity 5 has a coupling partition wall 7 on both sides in sequence. The coupling partition wall 7 has a coupling window 8 vertically opened to form a transmitting filter.

[0023] In this embodiment, specifically, the receiving channel 9 of the main cavity 1 has 10 receiving resonant cavities 10, and the top of the receiving resonant cavity 10 is connected to the other side of the common coupling block 3 of the common port 2. The end of the receiving resonant cavity 10 is connected to the receiving end 11. The 10 receiving resonant cavities 11 of the receiving channel 9 are arranged equidistantly in sequence. Each receiving resonant cavity 11 has a coupling partition wall 7 on both sides in sequence. The coupling partition wall has a coupling window 8 opened laterally to form a receiving filter.

[0024] In this embodiment, specifically, the main cavity 1 is provided with a cover plate 12, which is a rectangular flat plate. The cover plate 12 is connected to the main cavity 1 via a coaxial connector 13. Flanges 14 are fixedly connected to the left and right ends of the bottom center of the main cavity 1. The coaxial connector is installed on the cover plate with fixing screws. The inner core probe of the coaxial connector 13 passes through the cover plate 1 and is inserted into the grounding hole of the main cavity 1. Solder paste is applied to the surface of the main cavity 1 in contact with the cover plate 12, and reflow soldering is used to weld the main cavity 1 to the cover plate 1, which is equipped with the common coupling block 3 and the coaxial connector 13.

[0025] In this embodiment, specifically, the transmitting end 6 is located at the inner end of the main cavity 1, and the transmitting end 6 has a transmitting conversion step 15 inside. A transmitting conversion step 2 16 is fixedly connected to the transmitting conversion step 15. The transmitting conversion step 2 16 has a coaxial inner core grounding hole 17, and the coaxial inner core grounding hole 17 penetrates through the transmitting conversion step 2 16. The transmitting end 6 is a combination of the transmitting conversion step 15 and the transmitting conversion step 2 16. The outer flange of the coaxial connector 13 is installed on the cover plate 1, and the inner core probe of the coaxial connector 13 passes through the cover plate 1 and is inserted into the coaxial grounding hole 17 on the transmitting conversion step 2 17 of the main cavity 1, so as to realize the conversion of the transmitting filter from waveguide transmission to coaxial transmission. This connection is firm and the performance is stable.

[0026] In this embodiment, specifically, the receiving end 11 is located at the top of the main cavity 1, and the receiving end 11 has a receiving conversion step 18 inside. The receiving conversion step 18 has a receiving conversion step 29 and a receiving conversion boss 20, and the receiving conversion step 29 and the receiving conversion boss 20 are on the same axis. The receiving conversion step 29 has a coaxial inner core grounding hole 17, and the coaxial inner core grounding hole 17 penetrates the receiving conversion step 29. The receiving end 11 is composed of the receiving conversion step 18, the receiving conversion step 29, and the receiving conversion boss 20. The outer flange of the coaxial connector 13 is installed on the cover plate 1, and the inner core probe of the coaxial connector 13 passes through the cover plate 12 and is inserted into the coaxial grounding hole 17 on the conversion step 2 of the main cavity 1, realizing the conversion of the receiving filter from waveguide transmission to coaxial transmission. This design scheme has a simple structure and size, is easy to process, is convenient to install, has a firm connection, and stable performance.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Ku-band diplexer comprising a main cavity (1), characterized in that: The main cavity (1) is a rectangular box, and the main cavity (1) is provided with a common port (2), the common port (2) is provided with a common coupling block (3) installed at the position corresponding to the cover plate (12), which is used to split the signal coupled into the common port to the transmitting channel (4) and the receiving channel (9), so that the transmitting end (6) and the receiving end (11) of the diplexer realize coaxial interface.

2. The Ku-band diplexer of claim 1, wherein: The transmitting channel (4) provided by the main cavity (1) is provided with eight transmitting resonant cavities (5), and the top end of the transmitting resonant cavity (5) is connected to one side of the common coupling block (3) of the common port (2), and the end of the transmitting resonant cavity (5) is connected to the transmitting end (6).

3. The Ku-band diplexer of claim 2, wherein: The eight transmitting resonant cavities (5) of the transmitting channel (4) are arranged in turn and equidistantly, and each transmitting resonant cavity (5) has coupling partition walls (7) on both sides in turn, the coupling partition walls (7) are vertically provided with coupling windows (8), and the transmitting filter is formed.

4. The Ku-band diplexer of claim 1, wherein: The receiving channel (9) provided by the main cavity (1) has ten receiving resonant cavities (10), and the top end of the receiving resonant cavity (10) is connected to the other side of the common coupling block (3) of the common port (2), and the end of the receiving resonant cavity (10) is connected to the receiving end (11), and the ten receiving resonant cavities (10) of the receiving channel (9) are arranged in turn and equidistantly, and each receiving resonant cavity (10) has coupling partition walls (7) on both sides in turn, the coupling partition walls are transversely provided with coupling windows (8), and the receiving filter is formed.

5. The Ku-band diplexer of claim 1, wherein: The main cavity (1) is provided with a cover plate (12), the cover plate (12) is a rectangular flat plate, and the cover plate (12) is connected to the main cavity (1) through a coaxial connector (13), and the bottom of the main cavity (1) is fixedly connected with flanges (14) at the middle and both ends.

6. The Ku-band diplexer of claim 1, wherein: The transmitting end (6) is located at the inner end of the main cavity (1), and the transmitting end (6) is provided with a transmitting conversion step one (15) inside, the transmitting conversion step one (15) is fixedly connected with a transmitting conversion step two (16), the transmitting conversion step two (16) is provided with a coaxial inner core grounding hole (17), and the coaxial inner core grounding hole (17) penetrates the transmitting conversion step two (16).

7. The Ku-band diplexer of claim 1, wherein: The receiving end (11) is located at the inner top end of the main cavity (1), and the receiving end (11) is provided with a receiving conversion step one (18) inside, the receiving conversion step one (18) is provided with a receiving conversion step two (19) and a receiving conversion boss (20), and the receiving conversion step two (19) and the receiving conversion boss (20) are on the same axis, the receiving conversion step two (19) is provided with a coaxial inner core grounding hole (17), and the coaxial inner core grounding hole (17) penetrates the receiving conversion step two (19).

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