A novel T-shaped high-power waveguide phase shifter with continuous linear phase adjustment.

Area of Science:

• Electromagnetics and Wave Propagation
• Microwave Engineering
• Component Design

Background:

• High-power waveguide components are crucial for microwave systems.
• Existing phase shifters often face limitations in phase adjustment range and efficiency.
• Novel designs are needed to meet the demands of advanced applications.

Purpose of the Study:

• To investigate a novel T-shaped high-power waveguide phase shifter.
• To develop an optimal design approach for the phase shifter.
• To validate the performance through simulation and experimental testing.

Main Methods:

• Design and simulation of a T-shaped waveguide structure.
• Utilizing a boundary element method for optimal design.
• Fabrication and experimental testing of a prototype at 9.3 GHz.

Main Results:

• Achieved 0°-360° linear phase adjustment by varying the metal plate distance.
• Demonstrated high power transmission efficiency exceeding 99.6%.
• Experimental results closely matched simulation, with return loss > 29 dB and insertion loss < 0.3 dB.

Conclusions:

• The T-shaped waveguide phase shifter is a viable solution for high-power applications.
• The device offers a wide, linear phase adjustment range with excellent efficiency.
• The boundary element method provides an effective approach for optimizing such components.