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)
| Autor: | KAWAGUCHI, Tamio |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | IEICE transactions on electronics. (1):57-61 |
| ISSN: | 0916-8516 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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