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A practical approach of getting a wide tuning range dielectric resonator given a small tuning voltage is presented. For this work, a dielectric resonator with resonant frequency of 3.6 GHz was used. The dielectric resonator is placed on a low dielectric constant ceramic standoff. A circular tuning stub coupled to a varactor at one end, is situated underneath the dielectric resonator. Two microstrip...
Previously most of microwave circuits were designed based on thin film or thick film technologies. Nowadays many microwave laminates are becoming available for microwave circuits to be fabricated using standard epoxy/glass (FR4) processes offered at competitive prices. However, until recently, many surface mount components available are meant for lower frequency applications i.e. below 3 GHz. In this...
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