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| Presentation | 2007-08-03 10:50 A low distortion and low noise amplifier using even and odd-mode impedance differences of bias circuit and emitter inductor Toshifumi Nakatani, Koichi Ogawa (Panasonic)  MW2007-71 OPE2007-58 Link to ES Tech. Rep. Archives: MW2007-71 OPE2007-58 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A low distortion and low noise amplifier has been proposed using even and odd-mode impedance differences of bias circuit and emitter inductor. By using the equivalent circuit of an RF amplifier, we explain that the output IP3 of an amplifier can be improved when the output resistance of a bias circuit is low at 2-tone difference frequency and the inductance of an emitter inductor is small. In order to realize the condition, we propose the bias circuit with the high odd-mode impedance for carrier signals and with the low even-mode impedance for 2-tone difference frequency signals. Furthermore we find that the even-mode inductance of a differential inductor can be adjusted designing the length of an emitter bonding wire. Lower distortion of an amplifier can be achieved using even and odd-mode impedance difference of an emitter inductor. These parameters give no impact to the power gain and noise figure characteristics. 2GHz proposed differential amplifiers were fabricated using 0.18m SiGe BiCMOS technology. 3.8 dB output IP3 improvement of the proposed amplifier was obtained compared with the conventional one at > 18 dB power gain and < 1.7 dB noise figure. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | 3rd-order inter-modulation / differential amplifier / even / odd mode impedance / bias circuit / emitter inductor / power gain / noise figure / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 172, MW2007-71, pp. 163-168, Aug. 2007. | |
| Paper # | MW2007-71 | |
| Date of Issue | 2007-07-26 (MW, OPE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| 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 | MW2007-71 OPE2007-58 Link to ES Tech. Rep. Archives: MW2007-71 OPE2007-58 |
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| Conference Information | |
| Committee | EMT OPE MW |
| Conference Date | 2007-08-02 - 2007-08-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Muroran Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2007-08-EMT-OPE-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A low distortion and low noise amplifier using even and odd-mode impedance differences of bias circuit and emitter inductor |
| Sub Title (in English) | |
| Keyword(1) | 3rd-order inter-modulation |
| Keyword(2) | differential amplifier |
| Keyword(3) | even / odd mode impedance |
| Keyword(4) | bias circuit |
| Keyword(5) | emitter inductor |
| Keyword(6) | power gain |
| Keyword(7) | noise figure |
| Keyword(8) | |
| 1st Author's Name | Toshifumi Nakatani |
| 1st Author's Affiliation | Matsushita Electric Industrial Co., Ltd. (Panasonic) |
| 2nd Author's Name | Koichi Ogawa |
| 2nd Author's Affiliation | Matsushita Electric Industrial Co., Ltd. (Panasonic) |
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| Speaker | Author-1 |
| Date Time | 2007-08-03 10:50:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2007-71, OPE2007-58 |
| Volume (vol) | vol.107 |
| Number (no) | no.172(MW), no.173(OPE) |
| Page | pp.163-168 |
| #Pages | 6 |
| Date of Issue | 2007-07-26 (MW, OPE) |
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