@article{oai:sucra.repo.nii.ac.jp:00012936, author = {馬, 哲旺 and KAWAGUCHI, Tamio and 小林, 禧夫}, issue = {1}, journal = {IEICE transactions on electronics}, month = {}, note = {At frequencies currently used by mobile communications, many of the microstrip half-wavelength resonators are too large to realize miniaturized filters. For this reason, very small-sized microstrip spiral resonators and filters, using high-temperature superconductors (HTS), have been studied recently. In this paper, the resonant and coupling characteristics of microstrip G-type and S-type spiral resonators are investigated first by using an electromagnetic simulator. Then small-sized 4-pole, 8-pole, and 16-pole Chebyshev bandpass filters using S-type spirals are designed, respectively, with a midband frequency f_0=1.93 GHz. The frequency responses of the filters satisfy well the desired specifications, and the measured frequency response of the 8-pole HTS filter agrees well with the theoretical prediction., copyright(c)2005 IEICE 許諾番号:07RB0174  http://www.ieice.org/jpn/trans_online/index.html, text, application/pdf}, pages = {57--61}, title = {Miniaturized High-Temperature Superconductor Bandpass Filters Using Microstrip S-Type Spiral Resonators(Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)}, volume = {E88-C}, year = {2005}, yomi = {マ, テツオウ and カワグチ, タミオ and コバヤシ, ヨシオ} }