Paper Abstract and Keywords |
Presentation |
2008-12-12 15:15
A Novel Filter Construction Utilizing HTS Reaction-Type Filter to Improve Adjacent Channel Leakage Power Ratio of GaN HEMT Power Amplifiers Shunichi Futatsumori, Takashi Hikage, Toshio Nojima (Hokkaido Univ.), Akihiko Akasegawa, Teru Nakanishi, Kazunori Yamanaka (Fujitsu Ltd.) MW2008-158 Link to ES Tech. Rep. Archives: MW2008-158 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We propose a new band selective stop filter construction to decrease the out of band intermodulation distortion (IMD) noise generated in the transmitting power amplifier. Suppression of IMD noise directly improves the adjacent channel leakage power ratio (ACLR). Firstly, the structure of a 5-GHz split open-ring resonator is investigated. Then, a designed 5-GHz HTS-RTF with 4 MHz suppression bandwidth and more than 40 dB/MHz sharp skirt is fabricated and experimentally investigated. The measured ACLR values are improved by a maximum of 12.8 dB and are constant up to the passband signal power of 40 dBm. Finally, numerical analyses based on measured results of gallium nitride HEMT power amplifier characteristics are conducted. The analyzed results shows the drain efficiency of the amplifier can be improved to 44.2 % of the amplifier with the filter from the 15.7 % of the without filter. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Adjacent channel leakage power ratio / High-temperature superconductor / Reaction-type filter / ACLR / HTS / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 350, MW2008-158, pp. 71-76, Dec. 2008. |
Paper # |
MW2008-158 |
Date of Issue |
2008-12-05 (MW) |
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 |
MW2008-158 Link to ES Tech. Rep. Archives: MW2008-158 |
Conference Information |
Committee |
MW |
Conference Date |
2008-12-12 - 2008-12-12 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Toyama-Univ. Gofuku-camp. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
|
Paper Information |
Registration To |
MW |
Conference Code |
2008-12-MW |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Novel Filter Construction Utilizing HTS Reaction-Type Filter to Improve Adjacent Channel Leakage Power Ratio of GaN HEMT Power Amplifiers |
Sub Title (in English) |
|
Keyword(1) |
Adjacent channel leakage power ratio |
Keyword(2) |
High-temperature superconductor |
Keyword(3) |
Reaction-type filter |
Keyword(4) |
ACLR |
Keyword(5) |
HTS |
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Shunichi Futatsumori |
1st Author's Affiliation |
Hokkaido University (Hokkaido Univ.) |
2nd Author's Name |
Takashi Hikage |
2nd Author's Affiliation |
Hokkaido University (Hokkaido Univ.) |
3rd Author's Name |
Toshio Nojima |
3rd Author's Affiliation |
Hokkaido University (Hokkaido Univ.) |
4th Author's Name |
Akihiko Akasegawa |
4th Author's Affiliation |
Fujitsu Limited (Fujitsu Ltd.) |
5th Author's Name |
Teru Nakanishi |
5th Author's Affiliation |
Fujitsu Limited (Fujitsu Ltd.) |
6th Author's Name |
Kazunori Yamanaka |
6th Author's Affiliation |
Fujitsu Limited (Fujitsu Ltd.) |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2008-12-12 15:15:00 |
Presentation Time |
25 minutes |
Registration for |
MW |
Paper # |
MW2008-158 |
Volume (vol) |
vol.108 |
Number (no) |
no.350 |
Page |
pp.71-76 |
#Pages |
6 |
Date of Issue |
2008-12-05 (MW) |