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A resonant frequency control method for dielectric rod resonators is discussed. A dielectric rod of cylindrical shape is placed inside a metal cavity. The bottom face of the dielectric rod is fixed at the metal base plate. Resonant frequency tuning is achieved by lifting the top metal plate above the dielectric rod upper face. The paper presents simulations using the mode matching technique and experimental...
The research of the electromagnetic field distribution of the tunable shielded cylindrical metal-dielectric resonator was performed. The distribution of axial electric field in the resonator is presented. The external Q-factor and coupling coefficient were calculated for coupling loops of different shape and size.
The research of the thermal stability of the composite shielded cylindrical metal-dielectric resonator was performed. The sensitivities of resonant frequency to changes of resonator parameters are shown. The resulting temperature coefficient of resonant frequency is analyzed.
This paper presents a novel design of the cavity combline resonator. The resonator shows an extremely high sensitivity to the air gap thickness and high-Q performance. The design is well suited for electromechanical tuning. The results of the finite integration technique simulations are discussed. The influence of the resonator dimensions on the frequency tuning efficiency and the Q factor are presented.
The paper discusses quality factor of tunable shielded cylindrical metal-dielectric resonator taking into account dielectric and metal losses. It was shown that both metal and dielectric losses decrease in case of the air gap inclusion. It was investigated that the dielectric loss has local minimum.
A novel tunable cylindrical metal-dielectric resonator topology is described. It is designed with a dedicated Mode Matching technique. A Finite Element Method analysis of the resonator is also carried out. The computational results of both methods are compared and in good agreement.
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