All-solid-state short-wave broadband power amplifier

Abstract

The utility model relates to the field of radio frequency amplification, and discloses an all-solid-state short-wave broadband power amplifier, which comprises a controller, broadband power modules, a three-way distributor and a three-way synthesizer, the three-way distributor, the three broadband power modules and the three-way synthesizer are connected in sequence, the controller is connected with the broadband power modules and a directional coupler, and the directional coupler is connected with the controller. The input port of the three-way distributor is connected with an input signal. According to the utility model, the input signals are distributed and synthesized, and then are dynamically adjusted through the controller, so that the effects of realizing full-band coverage and guaranteeing the quality of full-band signals without connecting a plurality of traditional narrow-band devices in parallel are achieved, and the requirements of the fields of short-wave communication and the like on broadband high-power signals are met.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency amplification, and in particular to an all-solid-state shortwave broadband power amplifier. Background Technology

[0002] Shortwave communication achieves beyond-line-of-sight communication through ionospheric reflection, possessing survivability and autonomous communication capabilities, making it a core means of military and emergency communication. Modern communication systems require coverage of the entire 1.6-30MHz shortwave frequency band, which traditional narrowband amplifiers cannot meet. However, high output power can enhance signal penetration and propagation distance. Therefore, it is necessary to develop an all-solid-state shortwave broadband power amplifier to meet the broadband signal processing requirements of modern communication systems. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides an all-solid-state shortwave broadband power amplifier, which aims to improve the problem that some traditional amplifiers only support fixed frequency points and cannot cover the full frequency band of 1.6-30MHz, requiring multiple devices to be used in parallel.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an all-solid-state shortwave broadband power amplifier, comprising a controller, broadband power modules, a three-way distributor, and a three-way combiner, characterized in that: the three-way distributor, the three broadband power modules, and the three-way combiner are connected in sequence; the controller is connected to the broadband power modules and a directional coupler; and the input port of the three-way distributor is connected to an input signal.

[0005] The above technical solution allows the three-way distributor to distribute the received amplified signal evenly, thereby ensuring that the signal amplitudes at the three output terminals are consistent.

[0006] As a further description of the above technical solution:

[0007] The three-way distributor divides the input signal into three output terminals, and the three broadband power modules are connected in parallel.

[0008] The above technical solution allows three distributors to evenly distribute signals to three broadband power modules, and the parallel connection of the three broadband power modules can amplify the distributed signals.

[0009] As a further description of the above technical solution:

[0010] The three output terminals of the three distributor are electrically connected to the three input terminals of the three broadband power modules, respectively.

[0011] The above technical solution effectively amplifies the signal by connecting the three broadband power modules in parallel, thus meeting the operating requirements of shortwave broadband.

[0012] As a further description of the above technical solution:

[0013] The three output terminals of the three broadband power modules are electrically connected to the input terminal of the three-synthesizer.

[0014] The above technical solution allows the signal to be amplified and then transmitted to a tri-synthesizer via three broadband power modules.

[0015] As a further description of the above technical solution:

[0016] The triple synthesizer combines the outputs of the three broadband power modules.

[0017] Through the above technical solution, the tri-synthesizer can synthesize the amplified signal to achieve the desired carrier power output of ≥2kW.

[0018] As a further description of the above technical solution:

[0019] The output of the three-synthesizer is electrically connected to the input of the directional coupler.

[0020] Through the above technical solution, the directional coupler can monitor phase information, use the signal for power calibration, and determine whether the phase of the output signal of each power module is consistent and whether adjustments are needed.

[0021] As a further description of the above technical solution:

[0022] The directional coupler and the controller are connected bidirectionally.

[0023] The above technical solution enables the controller to understand the output status of the power amplifier in real time based on the feedback information monitored by the directional coupler.

[0024] As a further description of the above technical solution: the output terminal of the controller is electrically connected to the output terminals of the three broadband power modules.

[0025] Through the above technical solution, the controller can send control signals to the three broadband power modules, thereby controlling the signals to adjust and optimize the system performance.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, by distributing and synthesizing the input signal and then dynamically adjusting it through a controller, the full-band coverage can be achieved without the need for multiple narrowband devices connected in parallel, ensuring the signal quality of the entire band and meeting the demand for broadband high-power signals in fields such as shortwave communication.

[0028] 2. In this utility model, through the cooperation between the directional coupler and the controller in the structural design, signal monitoring or distribution can be performed through the coupled branch line without affecting the main line signal transmission, thereby improving the performance and efficiency of the entire power amplifier. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the composition and structure of the all-solid-state shortwave broadband power amplifier proposed in this utility model. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 This utility model provides an embodiment of an all-solid-state shortwave broadband power amplifier, comprising a controller, broadband power modules, a three-way splitter, and a three-way combiner. The three-way splitter, three broadband power modules, and the three-way combiner are connected sequentially. The controller is connected to the broadband power modules and a directional coupler. The input port of the three-way splitter is connected to the input signal, and the three-way splitter divides the input signal into three output terminals. All three broadband power modules use BLF189XR to achieve an amplification gain of approximately 23dB. The maximum output power of a single BLF189XR tube can reach 1500W, with an efficiency of nearly 80%. The operating voltage is DC50V, and it can withstand a reflected voltage surge of 130V. The standing wave ratio is 65:1. To ensure the reliability of the entire unit, a component derating design is adopted in this embodiment, with a single tube rated output of 1200W. The controller uses a high-performance MCU to monitor the operating status of the broadband power modules.

[0032] Specifically, the input amplified signal is divided into three identical signals by a three-way distributor, which can then be sent to three broadband power modules for parallel processing.

[0033] Reference Figure 1 The three broadband power modules are connected in parallel; the three outputs of the three distributors are electrically connected to the three inputs of the three broadband power modules; the three outputs of the three broadband power modules are electrically connected to the inputs of the three combiners; the three combiners combine the outputs of the three broadband power modules; the output of the three combiners is electrically connected to the input of the directional coupler.

[0034] Specifically, since the power amplification capability of a single power module is limited, the frequency range of 1.5-30MHz can be extended through the coordinated work of three broadband power modules. The amplified signal is then combined into a single output signal by a tri-synthesizer. The tri-synthesizer plays a role in signal integration in the entire system. A portion of the signal can be coupled out from the main signal path through a directional coupler. This portion of the signal is used for monitoring or control purposes.

[0035] Reference Figure 1 The directional coupler and controller are connected bidirectionally; the output of the controller is electrically connected to the output of the three broadband power modules.

[0036] Specifically, the signal output from the directional coupler is transmitted to the controller, enabling the controller to acquire the signal status of the three-synthesizer output in real time. Based on the received signal, the controller can control and adjust the system, ensuring the stable and efficient operation of the system. Then, the controller can send control signals to the three broadband power modules, thereby adjusting the operating parameters of the power modules, such as gain and phase, to achieve precise control and optimization of the entire power amplifier.

[0037] Working principle: In use, the three-way distributor first receives the input signal, then splits it into three signals, which are then evenly distributed to three broadband power modules at the output. The parallel connection of the three broadband power modules effectively amplifies the signal, increasing the output power of the carrier. The amplified signals from the three broadband power modules are then combined into a high-power output signal by a three-way combiner to meet the high-power requirements of practical applications. A directional coupler then couples a portion of the main signal output from the three-way combiner to monitor the status of the power amplifier's output signal. This information is fed back to the controller via the directional coupler, which then sends control signals to the three broadband power modules to adjust their parameters, thereby maximizing the combining efficiency.

[0038] This closed-loop control system enables the power amplifier to maintain stable performance under different operating conditions, improves the quality and stability of the output signal, and also enables some protection functions. When an abnormality is detected, the controller can adjust the operating status of the power module in a timely manner to avoid equipment damage.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An all-solid-state shortwave broadband power amplifier, comprising a controller, a broadband power module, a three-way distributor, and a three-way combiner, characterized in that: The three-way distributor, three broadband power modules, and three-way combiner are connected in sequence. The controller is connected to the broadband power modules and the directional coupler. The input port of the three-way distributor is connected to the input signal.

2. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The three-way distributor splits the input signal into three output terminals.

3. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The three broadband power modules are connected in parallel; the three output terminals of the three distributors are electrically connected to the three input terminals of the three broadband power modules, respectively.

4. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The three output terminals of the three broadband power modules are electrically connected to the input terminal of the three-synthesizer.

5. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The triple synthesizer combines the outputs of the three broadband power modules.

6. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The output of the three-synthesizer is electrically connected to the input of the directional coupler.

7. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The directional coupler and the controller are connected bidirectionally.

8. The all-solid-state shortwave broadband power amplifier according to claim 1, characterized in that: The output of the controller is electrically connected to the output of the three broadband power modules.

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