Ka-band power amplifier high-frequency box

Abstract

The Ka-band power amplifier high-frequency box comprises an input unit, a power amplifier link module, a switching network and an output unit which are connected in sequence, the power amplifier link module comprises a power supply module, and a power amplifier unit, a monitoring module and a heat dissipation device which are respectively connected with the power supply module; the power amplifier unit comprises a first isolator, a radio frequency adjusting assembly, a driving power amplifier, a four-way waveguide power divider, a four-way final-stage power amplifier, a four-way waveguide power combiner, a filter, a second isolator, a coupler and an output waveguide window which are connected in sequence. According to the invention, the power amplifier is optimally designed, so that the emission efficiency can be improved, the power consumption can be reduced, the power amplifier has good heat dissipation capability and capability of adapting to outdoor severe conditions and environments, the reliability and the stability of the system are improved, and amplification and filtering of three paths of up-conversion signals of 30.5-31.3 GHz can be completed.

Description

Technical Field

[0001] The present invention relates to the technical field of power amplifiers, and in particular to a Ka-band power amplifier high-frequency box. Background Art

[0002] The Ka-band is a portion of the microwave electromagnetic spectrum, with a frequency range of 26.5-40 GHz. In electronic communications, Ka-band amplifiers are often used to amplify weak electrical signals in systems such as satellite communications to meet transmit power requirements and ensure efficient signal transmission to distant receivers.

[0003] However, the transmission efficiency, power consumption, heat dissipation capacity, adaptability to harsh outdoor conditions, reliability and stability of existing Ka-band power amplifier high-frequency boxes need to be improved. Summary of the Invention

[0004] In view of the above problems, the present invention aims to provide a Ka-band power amplifier high-frequency box.

[0005] The technical solutions of the present invention are as follows:

[0006] A Ka-band power amplifier high-frequency box comprises an input unit, a power amplifier link module, a switch network, and an output unit connected in sequence; the power amplifier link module comprises a power module and power amplifier units, a monitoring module, and a heat sink respectively connected to the power module; the power amplifier unit comprises a first isolator, a radio frequency adjustment component, a driving power amplifier, a four-way waveguide power divider, a four-way final-stage power amplifier, a four-way waveguide power combiner, a filter, a second isolator, a coupler, and an output waveguide window connected in sequence.

[0007] Preferably, when the input of the power module is 220V AC voltage, the power module converts the 220V AC voltage into multiple DC voltages.

[0008] Preferably, the multiple DC voltages include -5V, +6V and +24V DC; wherein, +24V DC is used to power the monitoring module and the air cooling device, and -5V, +6V and +24V DC are used to power the power amplifier unit.

[0009] Preferably, the monitoring module is used to receive and correctly execute control instructions from the monitoring subsystem, and report the current working status of each component and comprehensive alarm status to the monitoring subsystem.

[0010] Preferably, the heat dissipation device is an air-cooled heat dissipation device.

[0011] Preferably, the radio frequency adjustment component includes a power divider, a detector and an attenuator 1 respectively connected to the power divider, and an attenuator 2 connected to the attenuator 1.

[0012] Preferably, the driving power amplifier includes a connected primary driver and a connected secondary driver, and both the primary driver and the secondary driver include a connected amplifier and an isolator.

[0013] Preferably, the Ka-band power amplifier high-frequency box is a Ka-band 50W power amplifier high-frequency box.

[0014] Preferably, the Ka-band 50W power amplifier high-frequency box includes three groups of 50W power amplifier link modules, and the back-end is connected to a switch network, and the switch network includes 3 waveguide switches, 1 magic T synthesizer, 1 waveguide filter and 3 loads.

[0015] Preferably, the power amplifier link modules of the first and second groups are connected to waveguide switch one, and the power amplifier link modules of the second and third groups are connected to waveguide switch two. The output ends of waveguide switch one and waveguide switch two are connected to the magic-T synthesizer, and the output end of the magic-T synthesizer is connected to waveguide switch three through the waveguide filter; waveguide switch two is connected to one of the loads, and waveguide switch three is connected to the remaining two loads.

[0016] The beneficial effects of the present invention are:

[0017] By optimizing the design of the power amplifier, the present invention can improve transmission efficiency, reduce power consumption, have good heat dissipation capabilities and the ability to adapt to harsh outdoor conditions, improve system reliability and stability, and can complete the amplification and filtering of three-way 30.5GHz to 31.3GHz up-converted frequency signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of the Ka-band power amplifier high-frequency box of the present invention;

[0020] Figure 2 This is a structural diagram of the Ka-band power amplifier high-frequency box power amplifier link module of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described below with reference to the accompanying drawings and examples. It should be noted that, in the absence of conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as those commonly understood by those of ordinary skill in the art to which this application belongs. The use of similar words such as "include" or "comprising" in the present invention means that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0022] like Figure 1-2 As shown, the present invention provides a Ka-band power amplifier high-frequency box, comprising an input unit, a power amplifier link module, a switch network, and an output unit connected in sequence; the power amplifier link module comprises a power module and power amplifier units, a monitoring module, and a heat dissipation device respectively connected to the power module; the power amplifier unit comprises an isolator 1, a radio frequency adjustment component, a driving power amplifier, a four-way waveguide power divider, a four-way final stage power amplifier, a four-way waveguide power combiner, a filter, an isolator 2, a coupler, and an output waveguide window connected in sequence.

[0023] In the present invention, after the excitation signal enters the chassis through the input waveguide, the signal enters the RF adjustment component, which has gain adjustment and input over-excitation protection functions, and cooperates with the output detector to complete the ALC function; then the signal enters the driving power amplifier, which can amplify the signal to a sufficient level to promote the final power synthesis; then the signal drives the four final power amplifiers respectively after passing through the four-way waveguide power distributor, and after being amplified by the final power amplifier, it is sent to the four-way waveguide power combiner for power synthesis; finally, the signal passes through the filter and coupler / isolator to reach the predetermined power output, completing the power amplification task of security control and external measurement uplink signals.

[0024] In a specific embodiment, when the input of the power module is a 220V AC voltage, the power module converts the 220V AC voltage into multiple DC voltages. Optionally, the multiple DC voltages include -5V, +6V, and +24V DC; wherein the +24V DC is used to power the monitoring module and the air-cooling device, and the -5V, +6V, and +24V DC are used to power the power amplifier unit. It should be noted that in addition to having the positive and negative voltage timing function, the power module of the present invention can also simultaneously have current detection, temperature protection, input overvoltage and overcurrent, output current limiting protection and other functions.

[0025] In a specific embodiment, the monitoring module is used to receive control instructions from the monitoring subsystem (such as power setting, transmit / stop switching, opening and closing of the automatic level control (ALC) function, switch network setting, etc.) and execute them correctly, and report the current working status of each component (such as current transmit power, reflected power, module temperature, power supply current, transmit / stop status, ALC status, switch network status, air cooling device working status, etc.) and comprehensive alarm conditions to the monitoring subsystem.

[0026] In a specific embodiment, the heat dissipation device is an air-cooled heat dissipation device, which can solve the heat dissipation problem of the entire device.

[0027] In a specific embodiment, the radio frequency adjustment component includes a power divider, a detector and an attenuator 1 respectively connected to the power divider, and an attenuator 2 connected to the attenuator 1.

[0028] In a specific embodiment, the driving power amplifier includes a connected primary driver and a connected secondary driver, and both the primary driver and the secondary driver include a connected amplifier and an isolator.

[0029] In a specific embodiment, the Ka-band power amplifier high-frequency box is a Ka-band 50W power amplifier high-frequency box. Optionally, the Ka-band 50W power amplifier high-frequency box includes three groups of 50W power amplifier link modules, with a subsequent stage connected to a switch network, wherein the switch network includes three waveguide switches, one magic-T synthesizer, one waveguide filter, and three loads. Optionally, the first and second groups of power amplifier link modules are connected to waveguide switch one, and the second and third groups of power amplifier link modules are connected to waveguide switch two. The output ends of waveguide switch one and waveguide switch two are connected to the magic-T synthesizer, and the output end of the magic-T synthesizer is connected to waveguide switch three via the waveguide filter; waveguide switch two is connected to one of the loads, and waveguide switch three is connected to the remaining two loads.

[0030] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A Ka-band power amplifier high-frequency box, characterized in that: The invention comprises an input unit, a power amplifier link module, a switch network and an output unit connected in sequence; the power amplifier link module comprises a power module and power amplifier units respectively connected to the power module, a monitoring module and a heat dissipation device; the power amplifier unit comprises an isolator 1, a radio frequency adjustment component, a driving power amplifier, a four-way waveguide power divider, a four-way final stage power amplifier, a four-way waveguide power combiner, a filter, an isolator 2, a coupler and an output waveguide window connected in sequence.

2. The Ka-band power amplifier high-frequency box according to claim 1, characterized in that: When the input of the power module is 220V AC voltage, the power module converts the 220V AC voltage into multiple DC voltages.

3. The Ka-band power amplifier high-frequency box according to claim 2, characterized in that: The multiple DC voltages include -5V, +6V and +24V DC; wherein, +24V DC is used to power the monitoring module and the air cooling device, and -5V, +6V and +24V DC are used to power the power amplifier unit.

4. The Ka-band power amplifier high-frequency box according to claim 1, characterized in that: The monitoring module is used to receive and correctly execute control instructions from the monitoring subsystem, and report the current working status of each component and comprehensive alarm conditions to the monitoring subsystem.

5. The Ka-band power amplifier high-frequency box according to claim 1, characterized in that: The heat dissipation device is an air-cooled heat dissipation device.

6. The Ka-band power amplifier high-frequency box according to claim 1, characterized in that: The radio frequency adjustment component includes a power divider, a detector and an attenuator 1 respectively connected to the power divider, and an attenuator 2 connected to the attenuator 1.

7. The Ka-band power amplifier high-frequency box according to claim 1, characterized in that: The driving power amplifier includes a connected primary driver and a connected secondary driver, and both the primary driver and the secondary driver include a connected amplifier and an isolator.

8. The Ka-band power amplifier high-frequency box according to any one of claims 1 to 7, characterized in that: The Ka-band power amplifier high-frequency box is a Ka-band 50W power amplifier high-frequency box.

9. The Ka-band power amplifier high-frequency box according to claim 8, characterized in that: The Ka-band 50W power amplifier high-frequency box includes three groups of 50W power amplifier link modules, and the back-end is connected to a switch network. The switch network includes three waveguide switches, one magic T synthesizer, one waveguide filter and three loads.

10. The Ka-band power amplifier high-frequency box according to claim 9, characterized in that: The power amplifier link modules of the first and second groups are connected to waveguide switch 1, and the power amplifier link modules of the second and third groups are connected to waveguide switch 2. The output ends of waveguide switch 1 and waveguide switch 2 are connected to the magic-T synthesizer, and the output end of the magic-T synthesizer is connected to waveguide switch 3 through the waveguide filter; waveguide switch 2 is connected to one of the loads, and waveguide switch 3 is connected to the remaining two loads.

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