Design and Construction of an X-band Gunn Oscillator for Education
Keywords:
Microwave, X-band, Gunn oscillator, Dielectric materials, Resonant cavityAbstract
This study aims to develop a tunable X-band Gunn oscillator for microwave education and experimental purposes. The device operates based on the principle of resonant cavity perturbation, using dielectric materials to modify the electric field within the cavity. Test results show that the prototype can be tuned over the range of 11.1034 - 13.0345 GHz (based on the experiment of moving to the minimum point of the standing wave), with the main dielectric tuning range between 11.865 and 12.355 GHz. The tested materials include Polytetrafluoroethylene (PTFE, Teflon), Polyvinyl chloride (PVC), and Polymethyl methacrylate (PMMA, Acrylic), with PMMA showing the best linear relationship between insertion position and frequency. Therefore, this device has high potential for application as a laboratory setup in microwave optics and electromagnetic wave communication technologies.
References
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