A through coaxial waveguide radial power combiner

Abstract

The utility model discloses a kind of straight-through coaxial waveguide radial power combiners, including outer cavity, inner cavity, cover plate, probe, medium, output end connector, input end connector, output connector mounting screw, cover plate mounting screw, input connector mounting screw, the probe is set in the bottom of inner cavity, the outer cavity, inner cavity, cover plate are sequentially connected from top to bottom, medium is sleeved on probe, output end connector is set above outer cavity by output connector mounting screw, the input end connector is set in the bottom of cover plate by input connector mounting screw.The utility model input connector and output connector are on the line of direction opposite in length direction, save the space of chassis in height direction, make chassis height lower;Save the space of chassis in width direction, make power amplifier module, power module better realize layout.

Description

Technical Field

[0001] This utility model relates to the field of power combiners, and more particularly to a through coaxial waveguide radial power combiner. Background Technology

[0002] Waveguide-based power splitting / combining technology boasts high combining efficiency, simple structure, easy miniaturization, good bandwidth performance, low radiation loss, and excellent heat dissipation, making it a superior method for achieving high power output. Research on waveguide-based microwave spatial power combining technology not only meets the needs of the times but also has practical application value.

[0003] The working modes of spatial power combining based on coaxial waveguides are mainly TEM and quasi-TEM modes. It has the potential for ultra-wideband operation and good symmetry. Its combining efficiency is independent of the number of power devices. It has application value for realizing ultra-wideband, multi-channel, and amplitude / phase consistent power combining circuits.

[0004] Chinese invention patent application number 2018106386193, entitled "A Coaxial Waveguide Radial Power Combiner," discloses a coaxial waveguide radial power combiner, including a first connector, a cavity, several second connectors, a central conductor, a rubber ring, and a cover plate. The central conductor is a stepped cylinder with a stepped cavity at its bottom. An annular groove is provided on the stepped cavity, and the rubber ring is placed inside the annular groove. The cavity is fixedly fitted around the central conductor. The first inner conductor of the first connector passes through a first through-hole at the top of the cavity and is fixedly connected to the top of the central conductor. Several second connectors are inserted through multiple second through-holes on the side of the cavity, and the second inner conductors of the second connectors are fixedly connected to the side of the central conductor. However, as shown in the appendix... Figure 1 As shown, the coaxial waveguide radial power combiner has multiple second connectors and one first connector in an orthogonal manner, meaning the connectors are on the side of the combiner. In practical applications, the multiple second connectors occupy a lot of space in the width and height directions, and space must be reserved for the installation of RF cables, which is not conducive to the overall layout of the chassis. Utility Model Content

[0005] The purpose of this invention is to address the space-consuming problem of output connectors in the prior art by proposing a through-coaxial waveguide radial power combiner.

[0006] A through-coaxial waveguide radial power combiner includes an outer cavity, an inner cavity, a cover plate, a probe, a dielectric, an output connector, an input connector, an output connector mounting screw, a cover plate mounting screw, and an input connector mounting screw. The probe is disposed at the bottom of the inner cavity. The outer cavity, inner cavity, and cover plate are connected sequentially from top to bottom. The dielectric is sleeved on the probe. The output connector is disposed above the outer cavity by the output connector mounting screw, and the input connector is disposed at the bottom of the cover plate by the input connector mounting screw.

[0007] The input connector and the output connector are on opposite lines along the length direction, so no space needs to be left on the side of the synthesizer when it is installed in the chassis.

[0008] Furthermore, in a through-coaxial waveguide radial power combiner, one end of the probe is externally threaded and is positioned within a threaded hole corresponding to the bottom edge of the inner cavity via the external thread.

[0009] Furthermore, in a through-coaxial waveguide radial power combiner, a dielectric is sleeved on the other end of the probe.

[0010] The other end of the probe is the probe tip, which passes through the hole in the medium and is fitted onto the probe tip.

[0011] Furthermore, in a through-coaxial waveguide radial power combiner, the inner cavity and the cover plate are sequentially connected and fixed from top to bottom by multiple cover plate mounting screws.

[0012] Furthermore, in a through-coaxial waveguide radial power combiner, the cover plate mounting screws sequentially pass through the screw holes of the cover plate and the screw holes of the inner cavity to connect and fix the inner cavity and the cover plate.

[0013] Furthermore, in a through-coaxial waveguide radial power combiner, the input connector mounting screws are used to connect and fix the input connector and the cover plate via screw holes passing through the cover plate.

[0014] Furthermore, in a through-coaxial waveguide radial power combiner, the output connector mounting screw is used to fix the output connector and the outer cavity by passing through a screw hole above the outer cavity.

[0015] Furthermore, in a through-coaxial waveguide radial power combiner, the outer cavity, inner cavity, and cover plate are made of aluminum alloy.

[0016] The surfaces of the outer cavity, inner cavity, and cover plate can be electrically oxidized or electroplated with gold, silver, or other processes.

[0017] Furthermore, a through-coaxial waveguide radial power combiner is provided, wherein the probe is made of brass;

[0018] The probe surface can be electroplated with gold, silver, or other processes;

[0019] The medium is made of insulating materials such as PTFE.

[0020] The beneficial effects of this utility model are as follows: By using a through coaxial waveguide radial power combiner, the orthogonal method of the connector is changed to a through method, and the input connector and the output connector are on opposite lines in the length direction, which saves space in the height direction of the chassis and makes the chassis height lower; it also saves space in the width direction of the chassis, allowing for better layout of the power amplifier module and power supply module. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an orthogonal coaxial waveguide radial power combiner.

[0022] Figure 2 This is a schematic diagram of a coaxial waveguide radial power combiner with a through-type design.

[0023] Figure 3 This is a schematic diagram of the explosive decomposition of this utility model.

[0024] Figure 4 This is a schematic diagram of the external cavity.

[0025] Figure 5 This is a schematic diagram of the internal cavity structure.

[0026] Figure 6 This is a schematic diagram of the cover plate.

[0027] Figure 7 This is a schematic diagram of the probe structure.

[0028] Figure 8 This is a schematic diagram of the medium's structure.

[0029] Figure 9 This is a modeling diagram of the present invention in the 2-4 GHz range.

[0030] Figure 10 The simulation results of the return loss of this invention in the 2-4GHz range are shown.

[0031] Figure 11 The simulation results show the insertion loss of this invention in the 2-4 GHz range.

[0032] In the diagram, 1-outer cavity, 2-inner cavity, 3-cover plate, 4-probe, 5-medium, 6-output connector, 7-input connector, 8-output connector mounting screw, 9-cover plate mounting screw, 10-input connector mounting screw. Detailed Implementation

[0033] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0034] Specific Implementation Example 1: Advantages of a Through-Channel Coaxial Waveguide Radial Power Combiner

[0035] As attached Figure 1 As shown, the multiple input connectors of the orthogonal coaxial waveguide radial power combiner are located on the side of the combiner. When placed inside the chassis, space needs to be reserved for connectors and RF cables in both the height and width directions of the chassis. The reserved width and height are approximately 100mm, while the standard 19-inch chassis is approximately 465mm wide. Therefore, the reserved width occupies about 20% of the chassis width, and the chassis height also increases by more than 2U. 1U = 44.45mm. This method restricts the layout of modules such as the power amplifier module and the power supply module.

[0036] As attached Figure 2 As shown, the multiple input connectors that were originally on the side of the synthesizer were moved to the bottom of the synthesizer. When the synthesizer is installed in the chassis, no space needs to be left on the side of the synthesizer. The space occupied in the height and width directions of the chassis is reduced by 100mm. Only about 50mm of reserved space is added in the length direction of the chassis, which greatly reduces the size of the chassis and reduces the impact on the layout of other modules in the chassis.

[0037] Specific Embodiment Two: A Structure of a Straight-through Coaxial Waveguide Radial Power Combiner

[0038] As attached Figure 3-8 As shown, a through-coaxial waveguide radial power combiner includes an outer cavity 1, an inner cavity 2, a cover plate 3, a probe 4, a dielectric 5, an output connector 6, an input connector 7, an output connector mounting screw 8, a cover plate mounting screw 9, and an input connector mounting screw 10. The probe 4 is located at the bottom of the inner cavity 2. The outer cavity 1, the inner cavity 2, and the cover plate 3 are connected sequentially from top to bottom. The dielectric 5 is sleeved on the probe 4. The output connector 6 is located above the outer cavity 1 via the output connector mounting screw 8, and the input connector 7 is located at the bottom of the cover plate 3 via the input connector mounting screw 10.

[0039] One end of the probe 4 has an external thread, which is set in the threaded hole corresponding to the bottom edge of the inner cavity 2 through the external thread.

[0040] Medium 5 is attached to the other end of probe 4.

[0041] The inner cavity 2 and the cover plate 3 are connected and fixed from top to bottom by multiple cover plate mounting screws 9.

[0042] The cover plate mounting screws 9 pass through the screw holes of the cover plate 3 and the screw holes of the inner cavity 2 in sequence to connect and fix the inner cavity 2 and the cover plate 3.

[0043] The input connector mounting screw 10 is used to fix the input connector 7 and the cover plate 3 through the screw hole passing through the cover plate 3.

[0044] The output connector mounting screw 8 is used to fix the output connector 6 and the outer cavity 1 by passing through the screw hole above the outer cavity 1.

[0045] The outer cavity 1, inner cavity 2, and cover plate 3 are made of aluminum alloy, and the probe 4 is made of brass.

[0046] Specific Embodiment Three: Simulation Results of a Through-Cyclic Coaxial Waveguide Radial Power Combiner

[0047] As attached Figure 9 As shown, the synthesizer achieves good frequency band matching through step transformation and cone transformation. The operating frequency band of the synthesizer can be widened by increasing the number of steps. The power handling capacity of the synthesizer can be increased by expanding the internal cavity of the synthesizer and replacing it with a high-power connector. The power synthesizer has been successfully applied to a 100W continuous wave transmitter in the 2-4GHz range.

[0048] As attached Figure 10-11 As shown, in the 2–4 GHz frequency band, the synthesizer's return loss is < -30 dB, insertion loss is < 0.1 dB, and distribution loss is approximately 7.78 dB, achieving good matching within the operating frequency band. Specific parameters of the actual product are as follows:

[0049] Operating frequency band: 2-4GHz

[0050] Number of channels: 6

[0051] Insertion loss: ≤0.4dB

[0052] Output VSWR: <1.5

[0053] Power handling capacity: ≥100W continuous wave

[0054] Input connector: SMA-K

[0055] Output connector: NK.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A through-coaxial waveguide radial power combiner, comprising an outer cavity (1), an inner cavity (2), a cover plate (3), a probe (4), a dielectric (5), an output connector (6), an input connector (7), an output connector mounting screw (8), a cover plate mounting screw (9), and an input connector mounting screw (10), wherein the probe (4) is disposed at the bottom of the inner cavity (2), the outer cavity (1), the inner cavity (2), and the cover plate (3) are connected sequentially from top to bottom, the dielectric (5) is sleeved on the probe (4), and the output connector (6) is disposed above the outer cavity (1) via the output connector mounting screw (8), characterized in that, The input connector (7) is mounted on the bottom of the cover plate (3) by the input connector mounting screw (10).

2. The through-coaxial waveguide radial power combiner according to claim 1, characterized in that, One end of the probe (4) has an external thread, which is set in the threaded hole corresponding to the bottom edge of the inner cavity (2) through the external thread.

3. The through-coaxial waveguide radial power combiner according to claim 2, characterized in that, The other end of the probe (4) is fitted with a medium (5).

4. The through-coaxial waveguide radial power combiner according to claim 1, characterized in that, The inner cavity (2) and the cover plate (3) are connected and fixed from top to bottom by a plurality of cover plate mounting screws (9).

5. The through-coaxial waveguide radial power combiner according to claim 4, characterized in that, The cover plate mounting screws (9) pass through the screw holes of the cover plate (3) and the screw holes of the inner cavity (2) in sequence to connect and fix the inner cavity (2) and the cover plate (3).

6. The through-coaxial waveguide radial power combiner according to claim 1, characterized in that, The input connector mounting screw (10) is used to fix the input connector (7) and the cover plate (3) by means of a screw hole passing through the cover plate (3).

7. The through-coaxial waveguide radial power combiner according to claim 1, characterized in that, The output connector mounting screw (8) is used to fix the output connector (6) and the outer cavity (1) by passing through the screw hole above the outer cavity (1).

8. The through-coaxial waveguide radial power combiner according to claim 1, characterized in that, The outer cavity (1), inner cavity (2), and cover plate (3) are made of aluminum alloy.

9. The through-coaxial waveguide radial power combiner according to claim 1, characterized in that, The probe (4) is made of brass.

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