Equivalent lumped elements G, L, C, and unloaded Q's of closed- and open-loop ring resonators

@article{citeulike:2762253, abstract = {A transmission-line model is used to extract the equivalent lumped-element circuits for the closed- and open-loop ring resonators. The unloaded Q values of the ring resonators can be calculated from the equivalent lumped elements G, L, and C. Four different configurations of microstrip ring resonators fabricated on low and high dielectric-constant substrates are used to investigate the lumped elements and unloaded Qs. The largest difference between the measured and calculated unloaded Q is 5.7\%, which is due to measurement uncertainties and accuracies of the calculation. These simple expressions introduce an easy method for analyzing ring resonators in filters and provide, for the first time, a means of predicting their unloaded Q}, author = {Hsieh, Lung-Hwa and Chang, Kai }, booktitle = {Microwave Theory and Techniques, IEEE Transactions on}, citeulike-article-id = {2762253}, doi = {10.1109/22.982223}, journal = {Microwave Theory and Techniques, IEEE Transactions on}, keywords = {lumped, resonator, ring}, number = {2}, pages = {453--460}, posted-at = {2008-05-06 19:37:56}, priority = {2}, title = {Equivalent lumped elements G, L, C, and unloaded Q's of closed- and open-loop ring resonators}, url = {http://dx.doi.org/10.1109/22.982223}, volume = {50}, year = {2002} }

TY - JOUR ID - citeulike:2762253 L3 - citeulike-article-id:2762253 TI - Equivalent lumped elements G, L, C, and unloaded Q's of closed- and open-loop ring resonators T2 - Microwave Theory and Techniques, IEEE Transactions on JF - Microwave Theory and Techniques, IEEE Transactions on VL - 50 IS - 2 SP - 453 EP - 460 N2 - A transmission-line model is used to extract the equivalent lumped-element circuits for the closed- and open-loop ring resonators. The unloaded Q values of the ring resonators can be calculated from the equivalent lumped elements G, L, and C. Four different configurations of microstrip ring resonators fabricated on low and high dielectric-constant substrates are used to investigate the lumped elements and unloaded Qs. The largest difference between the measured and calculated unloaded Q is 5.7%, which is due to measurement uncertainties and accuracies of the calculation. These simple expressions introduce an easy method for analyzing ring resonators in filters and provide, for the first time, a means of predicting their unloaded Q KW - lumped KW - resonator KW - ring AU - Hsieh, Lung-Hwa AU - Chang, Kai PY - 2002/// UR - http://dx.doi.org/10.1109/22.982223 ER -