| Presentation | 2002/4/10 Design of Miniaturized HTS Coplanar Filters with Attenuation Poles using Cross Coupling Jun Fujiyama, Ryosuke Oba, Haruichi Kanaya, Keiji Yoshida, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new design method of miniaturizing HTS coplanar waveguide bandpass filters using cross coupling is presented. When the size of the filter decreases, the cross-coupling between the resonators tends to appear, which causes attenuation poles. We can design and control the frequency and number of the attenuation poles. In order to realize the cross-coupling section, we reformed the meanderline interval and shape. The exact admittance inverters, susceptance slope parameters and the length of the resonators of the meanderline are determined using the 2.5-dimensional electromagnetic field simulator (ADS-Momentum). Two attenuation poles appear by using one cross-coupling passed over two resonators. 7-pole cross-coupled CPW BPF (center frequency of 2GHz, fractional bandwidth of 15MHz, ripple of 0.1dB and two attenuation poles on both sides of pass band) is packed within 6mm×10mm square substrate. Simulated performance was in good agreement with the designed one. This BPF has the skirt steepness of 20dB/MHz (40dB attenuation) and offband minimum rejection of 45dB, which is the same skirt characteristic of 11-pole Chebychev BPF. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | mobile telecommunication / microwave filter / coplanar waveguide / cross coupling / attenuation pole |
| Paper # | SCE2002-4 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2002/4/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of Miniaturized HTS Coplanar Filters with Attenuation Poles using Cross Coupling |
| Sub Title (in English) | |
| Keyword(1) | mobile telecommunication |
| Keyword(2) | microwave filter |
| Keyword(3) | coplanar waveguide |
| Keyword(4) | cross coupling |
| Keyword(5) | attenuation pole |
| 1st Author's Name | Jun Fujiyama |
| 1st Author's Affiliation | Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University() |
| 2nd Author's Name | Ryosuke Oba |
| 2nd Author's Affiliation | Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University |
| 3rd Author's Name | Haruichi Kanaya |
| 3rd Author's Affiliation | Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University |
| 4th Author's Name | Keiji Yoshida |
| 4th Author's Affiliation | Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University |
| Date | 2002/4/10 |
| Paper # | SCE2002-4 |
| Volume (vol) | vol.102 |
| Number (no) | 10 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |