| Presentation | 2020-01-31 Study on a tunable multiplexer composed of tunable second-order BPFs using BST varactor loaded asymmetric hairpin resonators featuring easy adjustable of coupling coefficients. Haruka Ogikubo, Satoshi Ono, Koji Wada, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report proposed an asymmetric hairpin resonator loaded with a BST varactor which is a variable capacitor made of ${rm (Ba_xSr_{1-x})TiO_3}$. Also, a tunable bandpass filter (BPF) featuring easy adjustable of coupling coefficients composed using those resonators is proposed. Moreover, a tunable diplexer composed two tunable BPFs which have different operation frequencies are designed. Firstly, the trends and target values of coupling coefficients and external quality factors against operation frequencies are calculated. The second-order tunable BPF using the asymmetric hairpin resonators loaded with a BST varactor is designed after the asymmetric hairpin resonator is configured as following the those trends. And, the frequency characteristics of tunable BPFs using BST or Si varactors are compared. Secondly, two type structures for tunable BPFs using those resonators which have different operation frequencies are configured. Finally, the circuit structure and simulaiton results of the tunable diplexer are shown. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | tunable filter / interdigital coupled-line / varactor diode / BST varactor / asymmetric hairpin resonator / multiplexer |
| Paper # | CAS2019-89,ICTSSL2019-58 |
| Date of Issue | 2020-01-23 (CAS, ICTSSL) |
| Conference Information | |
| Committee | ICTSSL / CAS |
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| Conference Date | 2020/1/30(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yasushi Fuwa(Sinshu Univ.) / Taizo Yamawaki(Hitachi) |
| Vice Chair | Hiroshi Tamura(Chuo Univ.) / Tomotaka Wada(Kansai Univ.) / Yasuhiro Takashima(Univ. of Kitakyushu) |
| Secretary | Hiroshi Tamura(NTT) / Tomotaka Wada(Jigyo) / Yasuhiro Takashima(Hitachi) |
| Assistant | Shunichi Yokoyama(NIED) / Hiroki Sato(Sony LSI Design) / Motoi Yamaguchi(Renesas Electronics) |
| Paper Information | |
| Registration To | Technical Committee on Information and Communication Technologies for Safe and Secure Life / Technical Committee on Circuits and Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on a tunable multiplexer composed of tunable second-order BPFs using BST varactor loaded asymmetric hairpin resonators featuring easy adjustable of coupling coefficients. |
| Sub Title (in English) | |
| Keyword(1) | tunable filter |
| Keyword(2) | interdigital coupled-line |
| Keyword(3) | varactor diode |
| Keyword(4) | BST varactor |
| Keyword(5) | asymmetric hairpin resonator |
| Keyword(6) | multiplexer |
| 1st Author's Name | Haruka Ogikubo |
| 1st Author's Affiliation | The University of Electro-Communications(UEC) |
| 2nd Author's Name | Satoshi Ono |
| 2nd Author's Affiliation | The University of Electro-Communications(UEC) |
| 3rd Author's Name | Koji Wada |
| 3rd Author's Affiliation | The University of Electro-Communications(UEC) |
| Date | 2020-01-31 |
| Paper # | CAS2019-89,ICTSSL2019-58 |
| Volume (vol) | vol.119 |
| Number (no) | CAS-400,ICTSSL-401 |
| Page | pp.pp.131-136(CAS), pp.131-136(ICTSSL), |
| #Pages | 6 |
| Date of Issue | 2020-01-23 (CAS, ICTSSL) |