Overview

The 1.3GHz 30kW solid-state power source is structurally divided into three parts: preamplifier and control cabinet, power amplifier cabinet, and high-power synthesis part. The overall structure is reasonable and the layout is beautiful. The control system and power amplifier are placed separately, and the RF related components are shielded in multiple layers to meet the design requirements of electromagnetic compatibility.
A single cabinet adopts a modular design, with four 660W level final power amplifier modules forming a 2KW power amplifier plugin, and six 2KW power amplifier plugins placed in one cabinet to form an 8KW power amplifier cabinet.
Four power amplifier cabinets, along with a matching liquid cooling system, preamplifier and control cabinet, and waveguide synthesizer, are combined to produce a 30kW power source system.

Features

Multiple special structural designs to ensure high-performance performance requirements
The design of the single tube power amplifier module adopts the method of welding power amplifier tubes and printed boards on a pure copper base plate to improve the thermal conductivity and conductivity of the power amplifier module, and reduce the impact of temperature on the stability of the power amplifier.
The RF matching circuit of the power amplifier module adopts high stability and reliability mica capacitors to reduce the impact of components on the performance indicators of the power amplifier tube matching circuit.
Each power amplifier module output is equipped with a loop generator, which bears the total reflection power through the loop generator and corresponding load, and increases the loop generator power and the maximum load bearing power to improve stability under total reflection conditions.
The conductor of the power amplifier output synthesizer is made of copper strip with a thickness of 2mm or more, which reduces synthesis loss, increases thermal tolerance and throughput power capability.
Distributed DC nearby DC power supply reduces the series resistance value from the power supply to the power amplifier module and improves pulse response performance. At the same time, the power module adopts a current sharing method to ensure redundant design of power supply.
Highly reliable control method
There are automatic and manual power on/off systems, and the automatic power on system has two methods: remote control and local touch screen control. The whole machine is equipped with multi-stage air switches to ensure reliable and sensitive control of the power source.
Backup redundancy design, eliminating single fatal failure points, high reliability and stability
The power amplifier module has a large power margin, redundant design, mutual backup, and can be replaced at will; When any module has a problem, it does not affect the overall operation of the power source.
All power modules are powered by parallel current sharing.
Modular design concept
RF power amplification: It is mainly composed of 660W power amplifier modules, which are combined in a simple building block manner to form the main component of the whole machine, the power amplifier. Compact structure, clear boundaries between functional units, easy to maintain.
DC power supply: Based on three 4KW power modules, combined into a 12KW output power component, multiple components are combined again to provide the required DC power for an amplifier cabinet.
All kinds of protection functions are complete
Switching power supply has high efficiency, wide voltage regulation range, and strong adaptability to changes in the power grid. It is equipped with protection measures such as overvoltage, overcurrent, undervoltage, overheating, short circuit, and lightning protection.
The power amplifier module is equipped with overheat, overexcitation, and overload protection.
The whole machine is equipped with measures such as high standing wave ratio, overheating, over excitation, phase loss and lightning protection, water circulation fault protection, as well as functions such as water pressure, water temperature, flow rate exceeding the preset range alarm.