Proceedings ArticleDOI
Using of self-resonance approach for high selectivity low loss SAW filters
S. Doberstein,V. Malyukhov,K.V. Nikolaenko,V. Razgonyaev +3 more
- pp 151-154
TLDR
In this paper, a self-resonant SAW filter with reflecting multistrip couplers (RMSC) and unidirectional IDTs was proposed.Abstract:
Low loss high selectivity surface acoustic wave (SAW) filters realized on the basis of the self-resonance approach without the use of matching LC-networks are presented. This approach is based on input interdigital transducer (IDT) static capacitance compensation by radiation susceptance and the choice of a definite number of finger pairs. Self-resonant SAW filters are developed on the basis of a ring configuration with reflecting multistrip couplers (RMSC) and unidirectional IDTs with U-shaped multistrip couplers. The optimization of filter topologies is achieved using computer programs based on the equivalent circuit model. At 45 MHz the ring filters show insertion loss below 2 dB, 2-5% fractional bandwidth, and stopband attenuation over 50 dB. >read more
Citations
More filters
Journal ArticleDOI
SAW ring filters with insertion loss of 1 dB
S.A. Dobershtein,V.A. Malyukhov +1 more
TL;DR: In this article, a low loss ring SAW filter with reflective multistrip couplers (RMSCs) was proposed for LiNbO/sub 3/ with self-matching.
Proceedings ArticleDOI
Very wide tuning range, low-noise voltage controlled oscillators using ladder type leaky surface acoustic wave filters
TL;DR: In this article, a new type voltage controlled oscillator (VCO) that can operate at GHz frequencies and provide smooth tuning over a 2 to 5% tuning bandwidth is presented.
Proceedings ArticleDOI
SAW ring filters with insertion loss of 1 dB
S.A. Dobershtein,V.A. Malyukhov +1 more
TL;DR: In this paper, the authors presented low loss ring SAW filters on 49/spl deg/YX, 64/spl yX, 128/spl YX LiNbO/sub 3/ realized on the basis of the reflecting multistrip couplers (RMSCs).
Proceedings ArticleDOI
A SAW resonator filter exploiting RMSCs
TL;DR: In this paper, a double-channel SAW resonator filter with reversing multistrip couplers is proposed, in which the reflection is purely electrical and does not depend on the position of interdigital transducers in the cavity region.
Proceedings ArticleDOI
Wideband three-transducer SAW filters using unidirectional IDTs on U-shaped MSCs with insertion loss of 1 dB
TL;DR: In this paper, a self-matching effect is used when a static capacitance of an IDT is compensated by an acoustic radiation susceptance, and three-transducer SAW filters using unidirectional IDTs on U-shaped MSCs are presented.
References
More filters
Proceedings ArticleDOI
Low-Loss SAW Filter Using Single-Phase IDTs and No External Tuning
TL;DR: In this paper, a new type of low-loss SAW filter using single level f abrication and which is naturally matched to 5011 and so requires no external components is reported.
Journal ArticleDOI
Velocity, electromechanical coupling factor and acoustic loss of surface shear waves propagating along x-axis on rotated Y-cut plates of LiNbO3
TL;DR: In this paper, velocity and propagation loss of surface shear waves are measured on free-space and metallised surfaces of LiNbO3 crystals along the x-axis of rotated Y-cut plates as a function of rotation between 35° and 70°.