ACLR Improvement of a 5-GHz Power Amplifier Using High-Temperature Superconducting Reaction-Type Transmitting Filters

Futatsumori, Shunichi; Hikage, Takashi; Nojima, Toshio; Akasegawa, Akihiko; Nakanishi, Teru; Yamanaka, Kazunori

ACLR Improvement of a 5-GHz Power Amplifier Using High-Temperature Superconducting Reaction-Type Transmitting Filters

Futatsumori, Shunichi; Hikage, Takashi; Nojima, Toshio et al.

Proceedings of the 38th European Microwave Conference, 2008, 1145-1148

Permalink : https://hdl.handle.net/2115/39216

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アクセス権	open access
URI	https://hdl.handle.net/2115/39216
タイトル	ACLR Improvement of a 5-GHz Power Amplifier Using High-Temperature Superconducting Reaction-Type Transmitting Filters
著者	Futatsumori, Shunichi ; Hikage, Takashi ; Nojima, Toshio ; Akasegawa, Akihiko ; Nakanishi, Teru ; Yamanaka, Kazunori
著者名 Futatsumori, Shunichi
e-Rad_Researcher 30312391 著者名 Hikage, Takashi
e-Rad_Researcher 40344478 著者名 Nojima, Toshio
著者名 Akasegawa, Akihiko
著者名 Nakanishi, Teru
著者名 Yamanaka, Kazunori
言語	英語
発行日	2008-10
出版者	European Microwave Association
収録物名	Proceedings of the 38th European Microwave Conference
ページ	1145-1148
記述	EuMC 2008: 38th European Microwave Conference 2008. 27-31 October 2008. Amsterdam.
抄録	Adjacent channel leakage power ratio (ACLR) improvement method of a 5-GHz power amplifier using high-temperature superconducting reaction-type transmitting filters (HTS-RTF) is proposed. The aim of this paper is to clarify the amount of ACLR improvement which is offered by HTS-RTFs. Firstly, measurement results of ACLR improvement using a prototype filter is introduced. The prototype filter has an about 10 dB improvement up to 40 dBm Wideband CDMA (W-CDMA) four-carrier signal, even though the suppression band is one side and the bandwidth is narrow. Secondly, to achieve wider suppression band, their resonator structures are optimized. The split-open ring resonator is modified to obtain higher unloaded Q-factor and lower current density. In addition, 5-GHz HTSRTFs which have 3.5 MHz suppression bands in both sides of the W-CDMA carrier signal are designed. Finally, the ACLR improvement obtained by the newly designed filter is estimated based on numerical analysis. The ACLR is improved by about 10 dB in the both sides. Furthermore, the results show that amplifiers' back-off can be reduced by 5 dB when the HTS-RTFs applied to power amplifiers.
会議記述	会議名 European Microwave Conference 2008 (EuMC 2008) 回次 38 開催地 Amsterdam 開催国 Netherlands, Kingdom of the
資源タイプ	会議発表論文
出版タイプ	Version of Record
権利情報	© 2008 European Microwave Association, EuMA
関連情報 (isPartOf)	Title ISBN: 978-2-87487-006-4
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1109/EUMC.2008.4751661