Ka-Band Compact Waveguide Differential Phase Shifter for Satellite Communication

This paper presents a compact waveguide differential phase shifter that adjusts the number and size of pins on both the top and bottom surfaces for accurate phase control. It operates from 0 to 180 degrees in the Ka-band, and the waveguide length is set at <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathrm{L}=1\lambda \mathrm{g}$</tex> ‘ This design enhances both performance and compactness.