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The Loaded Transmission Line Phase Shifter
Chik Wong & Amnad Ounayakovit
Advisor: Dr. S. Navarro

This project considers the construction of a loaded transmission line phase shifter (LTLPS) with non-ideal diodes. The LTLPS provides the phase control of a RF microwave signal by switching the susceptances between these two diodes. The design procedure for this LTLPS will be presented. It will emphasize the microstrip elements, the biasing circuit measuring the diodes impedances and the phase reflection modulator in the imbedding network. Also, the computer simulation by Touchstone of the final design before sending it for the fabrication will be discussed. The design uses a 50 ohm microstrip line and the operating frequency is 2.5 GHz.

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