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Titolo:
A DISCRETE ONE-COMPONENT WAVE MODEL AND ITS APPLICATION TO SAW RESONATOR FILTERS
Autore:
MARTIN G; KUNZE R; WEIHNACHT M; WALL B;
Indirizzi:
INST FESTKORPERUND WERKSTOFFORSCHUNG DRESDEN EV D-01069 DRESDEN GERMANY TELEFILTER TFT GMBH D-14513 TELTOW GERMANY
Titolo Testata:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
fascicolo: 4, volume: 41, anno: 1994,
pagine: 503 - 511
SICI:
0885-3010(1994)41:4<503:ADOWMA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
G. Martin et al., "A DISCRETE ONE-COMPONENT WAVE MODEL AND ITS APPLICATION TO SAW RESONATOR FILTERS", IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 41(4), 1994, pp. 503-511

Abstract

A one component acoustic bulk wave model is presented for the description of SAW devices using plane waves or waveguide modes. No equivalent circuit components are used, and the calculations always remain on the level of acoustic waves. As fundamental elements the transfer matrix and the source vector of one electrode region are derived. Using these elements, the particle displacements in an array consisting of striplike electrodes can be calculated as a function of all single capacitor voltages taking into account the boundary conditions including the amplitudes of foreign waves meeting the array. After determining the waveguide mode velocities and profiles the model is applied to transversely coupled waveguide resonator filters resulting in the admittance matrix which is needed to calculate the filter insertion loss. Two filter examples are investigated, and a sufficiently good agreement of thetheoretical and experimental results is found. The resonance splitting due to cascading of two (or more) single resonator filters can be increased by a coupling inductor yielding a smaller insertion loss undermatched conditions at a given bandwidth.

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Documento generato il 24/11/20 alle ore 08:19:08