Q-Factor of tuned microstrip resonator





microstrip transmission line, micro-mechanical tuning, effective permittivity, resonator, electromagnetic energy, loss, quality factor


The paper presents research of quality factor in the micro-mechanically tunable microstrip resonator and its change in response to tuning. In the presented design unloaded quality factor increases about 10% during tuning due to reduction of dielectric loss in substrate’s medium and ohmic loss in metal electrodes. When total loss in the device is relatively small, loss mechanisms contribute additively, so complex effective permittivity can be used to account loss reduction and frequency tuning.


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