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Reflection power suppression for solid state amplifiers with combiner optimization.

Shengyi Chen1, Xiao Li1, Junyu Zhu1

  • 1Spallation Neutron Source Science Center, Dongguan, Guangdong 523803, China.

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|April 4, 2023
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Summary
This summary is machine-generated.

High-power solid state amplifiers (SSAs) risk damage from reflected power. Optimizing power combiners reduces this risk, enhancing SSA stability and preventing module failure.

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Area of Science:

  • Electrical Engineering
  • Physics
  • Accelerator Technology

Background:

  • High-power solid state amplifiers (SSAs) are crucial in accelerator facilities.
  • Equipment failure due to reflected power poses a significant risk to SSA longevity.
  • Unequal module amplitudes in SSAs exacerbate damage from full power reflection.

Purpose of the Study:

  • To analyze the mechanisms of reflected power generation in SSAs.
  • To propose an optimization scheme for power combiners to improve SSA stability.
  • To mitigate damage to power amplifier modules caused by reflected power.

Main Methods:

  • Analysis of reflected power generation using scattering parameters of power combiners.
  • Development of an optimization scheme for power combiner design.
  • Simulation and experimental validation of the proposed optimization scheme.

Main Results:

  • Identified conditions where SSA modules can receive up to four times their rated power in reflected energy.
  • Demonstrated that optimizing combiner parameters significantly reduces maximum reflected power.
  • Showcased the effectiveness of the proposed scheme in enhancing anti-reflection capabilities.

Conclusions:

  • Power combiner optimization is essential for improving the stability and reliability of high-power SSAs.
  • The proposed optimization scheme effectively suppresses maximum reflected power, protecting amplifier modules.
  • Implementing optimized combiners enhances the operational lifespan of SSAs in demanding applications.