Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Seiichi Mitobe"'
Autor:
Yasuo Ebata, Seiichi Mitobe, Takashi Matsuda, Yoshio Satoh, Koichi Wada, Satoru Matsuda, Shogo Inoue, Masanori Ueda
Publikováno v:
Japanese Journal of Applied Physics. 45:6490-6495
In this paper, we describe a longitudinally coupled double-mode surface acoustic wave (SAW) filter on a 45° X–Z Li2B4O7 (LBO) substrate for 1 GHz radio frequency identification (RF-ID) systems in Japan. Since LBO has a low dielectric constant, the
Publikováno v:
1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
A high performance and novel SAW IF 210 MHz filter for CDMA (PCS) system is developed on LBO substrate. The filter consists of double-tracked filters which are connected in parallel on one chip. The main track-filter is RSPUDT filter having grating r
Autor:
Seiichi Mitobe, Masanori Koshiba
Publikováno v:
Electronics and Communications in Japan (Part II: Electronics). 72:101-111
An analysis method is proposed herein which uses an equivalent circuit model as a means to evaluate positive/negative reflection-type (PNR) SAW reflectors. The PNR reflector consists of reflecting elements which have 180° phase difference (positive
Publikováno v:
Electronics and Communications in Japan (Part II: Electronics). 68:94-101
The propagation velocity of the acoustic wave can be reduced in a periodic acoustic waveguide (periodic waveguide) on which a periodic perturbation is added along the propagation direction of the acoustic wave. The passband and stopband appear in the
Publikováno v:
Electronics and Communications in Japan (Part II: Electronics). 70:37-45
A theoretical method is described for determining equivalent circuit parameters for metallic gratings on arbitrary piezoelectric substrates. In this paper, to consider an energy storage effect, we adopt the equivalent circuit model proposed by Li et
Publikováno v:
Japanese Journal of Applied Physics. 26:120
An equivalent circuit model for positive/negative reflection-type SAW reflectors is presented. Circuit parameters can be theoretically determined by applying the finite-element method to an infinite array. To show the validity and usefulness of this
Publikováno v:
Japanese Journal of Applied Physics. 25:133
An equivalent network approach is described for the anlysis of surface acoustic wave metallic gratings. Circuit parameters can be theoretically determined by applying the finite-element method to an infinite array. To show the validity and usefulness
Autor:
Masanori Koshiba, Seiichi Mitobe
Publikováno v:
Japanese Journal of Applied Physics. 27:148
A coupled mode theory has been applied to surface-acoustic-wave gratings in order to study both the fundamental and higher harmonic operations of the reflective gratings. Coupling coefficients can be theoretically determined by applying the finite-el
Conference
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