Electronics-Microwaves(Date:2003/04/16)

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[Date]2003/4/16
[Paper #]
目次

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[Date]2003/4/16
[Paper #]
Measurement of dielectric constant of R-,A-,C-plane sapphire substrates and fabrication of YBCO thin films on these substrates.

Masanobu SHIRAKAWA,  Shinobu WATANABE,  Keiji AIZAWA,  Masanobu KUSUNOKI,  Masashi MUKAIDA,  Shigetoshi OHSHIMA,  

[Date]2003/4/16
[Paper #]SCE2003-1,NW2003-1
Preparation of Josephson Junctions by MOCVD films

Y. Nakajima,  H. Kokubun,  T. Amemura,  N. Iwata,  Y. Tarutani,  K. Tanabe,  T. Morishita,  H. Yamamoto,  

[Date]2003/4/16
[Paper #]SCE2003-2,MW2003-2
Critical Current Density and 22GHz Surface Resistance of TFA-MOD YBCO Film on CeO2-buffered MgO Substrate

Katsumi Suzuki,  Kenji Taki,  Takeshi Araki,  Daisuke Yamashita,  Izumi Hirabayashi,  Youichi Enomoto,  

[Date]2003/4/16
[Paper #]SCE2003-3,MW2003-3
In this paper, we discuss an evaluation method of a maximum surface current density J_s dependence of a surface resistance R_s of high temperature superconductors (HTS). In this method, a resonator is constructed by a sapphire rod and two HTS. The input coupling loop is adjusted to maintain the critical coupling. The output coupling loop is adjusted to realize a weak coupling. Thus, the efficient measurement can be performed. At first, the evaluation formula of J_s is derived. Then, the J_s dependence measurements of R_s of YBa_2Cu_3O_7 thick film are measured. As a result, it is found that the R_s at J_s=200 A/m is about two times higher than one at J_s=3 A/m in the range of 20 to 80 K. Also, it is found that the R_s is the same as one of a copper plate at 80 K and J_s=100 A/m.

Toru HASHIMOTO,  Yoshio KOBAYASHI,  

[Date]2003/4/16
[Paper #]SCE2003-4,MW2003-4
Superconducting Filter on Sapphire Substrate

Fumihiko AIGA,  Hiroyuki FUKE,  Yoshiaki TERASHIMA,  Mutsuki YAMAZAKI,  Hiroyuki KAYANO,  Tatsunori HASHIMOTO,  

[Date]2003/4/16
[Paper #]SCE2003-5,MW2003-5
Improvement of superconducting filter properties using dielectric rod trimming

Hiroshi mikami,  Shigetoshi ohsima,  Masashi mukaida,  Masanobu kusunoki,  Keiji aizawa,  

[Date]2003/4/16
[Paper #]SCE2003-6,MW2003-6
Study for the design of 30GHz HTS-CPW type BPF using λ/4 resonator

Takashi Shimizu,  Zhewang Ma,  Yoshio Kobayashi,  

[Date]2003/4/16
[Paper #]SCE2003-7,MW-2003-7
Development of SIS Mixers using Single-crystal NbN Films in the Sub-mm Wave Region

Akira KAWAKAMI,  Yoshinori UZAWA,  Masanori TAKEDA,  Zhen WANG,  

[Date]2003/4/16
[Paper #]SCE2003-8,MW2003-8
Design of HTS Receiver with CMOS Low Noise Amplifier

Go URAKAWA,  Haruichi KANAYA,  Keiji YOSHIDA,  

[Date]2003/4/16
[Paper #]SCE2003-9,MW2003-9
A Wide Dynamic Range Low Noise Amplifier with a Low Phase Shift MOSFET Attenuator

Chiemi KAGEYAMA,  Eiji TANIGUCHI,  Kenichi MAEDA,  Takayuki IKUSHIMA,  Noriharu SUEMATSU,  

[Date]2003/4/16
[Paper #]SCE2003-10,MW2003-10
Design Method of Miniaturizing Planar waveguide Bandpass Filter using Meander Lines

Ryousuke Oba,  Kohji Kawakami,  Haruichi Kanaya,  Keiji Yoshida,  

[Date]2003/4/16
[Paper #]SCE2003-11,MW2003-11
Design of a Novel Compact Interdigital Bandpass Filter Using Coplanar Quarter-Wavelength Resonators

Zhewang Ma,  Kaneo Nomiyama,  Tamio Kawaguchi,  Yoshio Kobayashi,  

[Date]2003/4/16
[Paper #]SCE2003-12,MW2003-12
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[Date]2003/4/16
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[Date]2003/4/16
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