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| Presentation | 2007-01-17 09:45 Reduced Gain Variation against Temperature with NTC Thermistor on HPA Module for W-CDMA System Akira Kuriyama (CRL), Shigehiro Yuyama (Renesas), Masami Ohnishi, Hidetoshi Matsumoto (CRL), Tomonori Tanoue, Isao Ohbu (Renesas) Link to ES Tech. Rep. Archives:  ED2006-200 MW2006-153 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A high-power amplifier (HPA) module for wide-band code division multiple access (W-CDMA) system with small gain variation against temperature is presented in this paper. Two temperature compensation techniques, which contain gain control bias circuits that correspond to temperature or negative temperature coefficient (NTC) thermistors were investigated. Comparison between the above techniques indicated that the technique with NTC thermistors was more effective in reducing gain variation without affecting linearity. A fabricated two-stage HPA module for W-CDMA system with a NTC thermistor in its input matching network provided a small gain variation within $\pm1$ dB and an adjacent channel leakage power ratio (ACLR) under $-36$ dBc in the temperature range from $-10$ to $+85^{\circ}$C when ACLR was measured under load mismatched conditions, voltage standing wave ratio (VSWR) of $1.4:1$. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | High-Power Amplifier Module / Thermistor / Gain Variation / Linearity / W-CDMA / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, no. 460, MW2006-153, pp. 1-5, Jan. 2007. | |
| Paper # | MW2006-153 | |
| Date of Issue | 2007-01-10 (ED, 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: ED2006-200 MW2006-153 |
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| Conference Information | |
| Committee | MW ED |
| Conference Date | 2007-01-17 - 2007-01-19 |
| 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 | MW |
| Conference Code | 2007-01-MW-ED |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reduced Gain Variation against Temperature with NTC Thermistor on HPA Module for W-CDMA System |
| Sub Title (in English) | |
| Keyword(1) | High-Power Amplifier Module |
| Keyword(2) | Thermistor |
| Keyword(3) | Gain Variation |
| Keyword(4) | Linearity |
| Keyword(5) | W-CDMA |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Akira Kuriyama |
| 1st Author's Affiliation | Central Research Laboratory, Hitachi Ltd. (CRL) |
| 2nd Author's Name | Shigehiro Yuyama |
| 2nd Author's Affiliation | Renesas Corp. (Renesas) |
| 3rd Author's Name | Masami Ohnishi |
| 3rd Author's Affiliation | Central Research Laboratory, Hitachi Ltd. (CRL) |
| 4th Author's Name | Hidetoshi Matsumoto |
| 4th Author's Affiliation | Central Research Laboratory, Hitachi Ltd. (CRL) |
| 5th Author's Name | Tomonori Tanoue |
| 5th Author's Affiliation | Renesas Corp. (Renesas) |
| 6th Author's Name | Isao Ohbu |
| 6th Author's Affiliation | Renesas Corp. (Renesas) |
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| Speaker | Author-1 |
| Date Time | 2007-01-17 09:45:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | ED2006-200, MW2006-153 |
| Volume (vol) | vol.106 |
| Number (no) | no.459(ED), no.460(MW) |
| Page | pp.1-5 |
| #Pages | 5 |
| Date of Issue | 2007-01-10 (ED, MW) |
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