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| Presentation | 2005-04-27 13:55 Design of coplanar waveguide duplexer with attenuation poles Kenta Seki, Kouji Kawakami, Haruichi Kanaya, Keiji Yoshida (Kyushu Univ) Link to ES Tech. Rep. Archives:  SCE2005-5 MW2005-5 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We present the new design method of the coplanar wageguide (CPW) duplexer with high isolation characteristic, which is composed of transmitting (Tx) bandpass filter (BPF), receiving (Rx) BPF and T-branch line. For size reduction, we chose the meanderline CPW quarter-wavelength resonator BPF. We can design the frequency and number of the attenuation poles by modifying the meander radius and shape of the cross-coupling meanderline. Tx 2-pole BPF has center frequency=4.900GHz and bandwidth=30MHz, and 3-pole Rx BPF with 1 attenuation pole has center frequency=4.635GHz, bandwidth=100MHz. In order to suppress through Tx to Rx signal, the attenuation pole of the Rx BPF is sifted to the center frequency of the Tx band. So, the isolation through Tx to Rx is less than -120dB. We also designed and measured the frequency characteristics of the miniaturized CPW resonator (center frequency=10GHz, size=3 x 3mm) on the CMOS Chip (TSMC 0.35um BiCMOS process), in order to estimate the quality factor of the conductor. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | duplexer / microwave circuit / coplanar waveguide / miniaturization / quarter-wavelength resonator / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 105, no. 33, SCE2005-5, pp. 21-26, April 2005. | |
| Paper # | SCE2005-5 | |
| Date of Issue | 2005-04-20 (SCE, MW) | |
| ISSN | Print edition: ISSN 0913-5685 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | Link to ES Tech. Rep. Archives: SCE2005-5 MW2005-5 |
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| Conference Information | |
| Committee | MW SCE |
| Conference Date | 2005-04-27 - 2005-04-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | - |
| Paper Information | |
| Registration To | SCE |
| Conference Code | 2005-04-MW-SCE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of coplanar waveguide duplexer with attenuation poles |
| Sub Title (in English) | |
| Keyword(1) | duplexer |
| Keyword(2) | microwave circuit |
| Keyword(3) | coplanar waveguide |
| Keyword(4) | miniaturization |
| Keyword(5) | quarter-wavelength resonator |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kenta Seki |
| 1st Author's Affiliation | Kyushu University (Kyushu Univ) |
| 2nd Author's Name | Kouji Kawakami |
| 2nd Author's Affiliation | Kyushu University (Kyushu Univ) |
| 3rd Author's Name | Haruichi Kanaya |
| 3rd Author's Affiliation | Kyushu University (Kyushu Univ) |
| 4th Author's Name | Keiji Yoshida |
| 4th Author's Affiliation | Kyushu University (Kyushu Univ) |
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| Speaker | Author-1 |
| Date Time | 2005-04-27 13:55:00 |
| Presentation Time | 25 minutes |
| Registration for | SCE |
| Paper # | SCE2005-5, MW2005-5 |
| Volume (vol) | vol.105 |
| Number (no) | no.33(SCE), no.34(MW) |
| Page | pp.21-26 |
| #Pages | 6 |
| Date of Issue | 2005-04-20 (SCE, MW) |
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