Longitudinally Coupled Resonator Filter Using Edge Reflection of Bleustein-Gulyaev-Shimizu and Shear Horizontal Waves with Various Bandwidths Realized by Selecting Substrates
スポンサーリンク
概要
- 論文の詳細を見る
A conventional surface acoustic wave (SAW) resonator filter requires reflectors with many grating fingers at both sides of the interdigital transducers (IDTs). On the other hand, a small-sized low-loss resonator filter without grating fingers can be realized by utilizing the reflection of a Bleustein-Gulyaev-Shimizu (BGS) wave or a shear horizontal (SH) wave at the edge of a substrate. As a result, the authors have developed longitudinally coupled resonator filters using the reflection of BGS and SH waves at the edges of a substrate. Longitudinally coupled resonator filters on piezoelectric ceramic substrates for the first intermediate frequency (IF) stage have been realized to be low-loss, small-sized and extremely wide bandwidth (fractional bandwidth of 15%) filters as compared to the ordinary resonator filters, and they can have various kinds of bandwidths (2 to 15%) by employing ceramic substrates with various electromechanical coupling factors. On the other hand, the edge-reflection-type resonator filters on LiTaO3 single crystal for various first IF stages have also been realized to be low-loss and small-sized filters. In spite of being a wire-bonding type of IF filter, the package size of this filter is the same as that of the radio frequency (RF) SAW filter.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-05-30
著者
-
AGO Junya
Murata Mfg. Co. , Ltd.
-
HORIUCHI Hideya
Murata Mfg. Co. , Ltd.
-
Kadota Michio
Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto 617-8555, Japan
-
Ago Junya
Murata Mfg. Co., Ltd., Nagaokakyo-shi, Kyoto 617-8555, Japan
-
Horiuchi Hideya
Murata Mfg. Co., Ltd., Nagaokakyo-shi, Kyoto 617-8555, Japan
-
Ikeura Mamoru
Murata Mfg. Co., Ltd., Nagaokakyo-shi, Kyoto 617-8555, Japan
関連論文
- Determination of the Polarities of ZnO Thin Films on Polar and Nonpolar Substrates Using Scanning Nonlinear Dielectric Microscopy
- Ceramic Resonators Using BGS Waves : SAW and Communication Device
- Frequency Trimming of ZnO/Glass SAW Filters : SAW and Communication Devices
- Shear Bulk Wave Transducer Made of (112^^-0)-Plane Epitaxial ZnO Film on R-Sapphire
- The Polishing Effect of ZnO Thin Films on SAW Filters : SAW and Communication Devices
- Characteristics of Bleustein-Gulyaev-Shimizu Wave Resonators on Ceramics at High Frequencies
- Evaluation of Piezoelectric Ceramic Substrates for Ultrasonic Bulk Wave Filters and Resonators Using Pulse Interference Method
- Characteristics of Zinc Oxide Films on Glass Substrates Deposited by RF-Mode Electron Cyclotron Resonance Sputtering System
- Piezoelectric Characteristics of ZnO Films Deposited Using an Electron Cyclotron Resonance Sputtering System
- Ion Polishing of ZnO Films by an ECR System : SAW and Communication Device
- Properties of Leaky, Leaky Pseudo, and Rayleigh Surface Acoustic Waves on Various Rotated Y-cut Langasite Crystal Substrates
- Control of Nonlinear Piezoelectricity and Its Application to Efficiency Improvement of Surface Acoustic Wave Elastic Convolver
- Tunable Filters Using Ultrawide-Band Surface Acoustic Wave Resonator Composed of Grooved Cu Electrode on LiNbO3
- Small Surface Acoustic Wave Duplexer for Wide-Band Code-Division Multiple Access Full-Band System Having Good Temperature Characteristics
- Small and Low-Loss Intermediate Frequency Surface Acoustic Wave Filters Using Zinc Oxide Film on Quartz Substrate
- Acoustic Wave Devices Composed of Periodically Poled $Z$-Cut LiTaO3 Plate Using Edge Reflection
- Low Loss Intermediate-Frequency Resonator Filter Using Shear Horizontal Type Leaky Surface Acoustic Wave on $\alpha$-Phase Heavy Metal Film/Quartz
- Transversely Coupled Resonator Filters Utilizing Reflection of Bleustein-Gulyaev-Shimizu Wave at Free Edges of Substrate
- A Bleustein-Gulyaev-Shimizu Wave Resonator with 2 or 3 Resonances for Double Traps in TV and VCR (VTR)
- Improvements in Temperature Characteristics and Bandwidth for ZnO/Quartz Structure with Large Coupling Factor
- Improvement of Shape Factor and Loss of Surface Acoustic Wave Resonator Filter Composed of SiO2/High-Density-Electrode/LiTaO3
- High-Frequency Surface Acoustic Wave Resonator Filter Composed of ZnO/High-Density Electrode/Quartz Structure
- Surface Acoustic Wave Duplexer Composed of SiO2/Cu Electrode/LiNbO3 Structure Having Convex and Concave Portions
- Properties of Zinc Oxide (ZnO) Films Deposited by an Electron Cyclotron Resonance (ECR) Sputtering System
- Surface Acoustic Wave Characteristics on ZnO/YZ・LiNbO_3 Structure and Their Application to Elastic Convolver
- Magnetic sensor based on surface acoustic wave resonators (Special issue: Ultrasonic electronics)
- SiO2/Grooved Al Electrode/LiTaO3 and Edge-Reflection Surface Acoustic Wave Structures Having Large Reflection Coefficient, Large Coupling Factor, and Excellent Temperature Characteristic Even If Al Electrodes Are Used
- Surface Acoustic Wave Characteristics of a ZnO/Quartz Substrate Structure Having a Large Electromechanical Coupling Factor and a Small Temperature Coefficient
- Band-Pass-Type Tunable Filter Using Surface Acoustic Wave Resonator Composed of Grooved Cu Electrodes on LiNbO (Special Issue : Ultrasonic Electronics)
- Smaller Surface Acoustic Wave Duplexer for US Personal Communication Service Having Good Temperature Characteristics
- Development of Substrate Structures and Processes for Practical Applications of Various Surface Acoustic Wave Devices
- Nanodomain Formation on Ferroelectrics and Development of Hard-Disk-Drive-Type Ferroelectric Data Storage Devices
- Sensitivity of Surface Acoustic Wave Magnetic Sensors Composed of Various Ni Electrode Structures
- Application of Acoustooptic Tunable Filter to Strain- or Vibration-Sensing System
- Very Small-Sized Resonator Filter Using Shear Horizontal Wave on Quartz
- RF Filter using Boundary Acoustic Wave
- Radio Frequency Surface Acoustic Wave Filter Having Narrow Bandwidth and Excellent Temperature Characteristic
- High-Frequency Lamb Wave Device Composed of LiNbO3 Thin Film
- Surface Acoustic Wave Duplexer for US Personal Communication Services with Good Temperature Characteristics
- Ultrawide-Band Resonators Using Shear Horizontal-Type Plate Wave and Their Application
- S
- A Bleustein-Gulyaev-Shimizu Wave Resonator with 2 or 3 Resonances for Double Traps in TV and VCR (VTR)
- High-Frequency Edge Reflection Type Resonators with Excellent Temperature Characteristics
- Growth of $\langle 1\bar{1}00\rangle$ Epitaxial ZnO Film on $Y$-Plane LiNbO3 Substrate
- Ultrawide-Band Resonators Using Shear Horizontal-Type Plate Wave and Their Application (Special Issue : Ultrasonic Electronics) -- (Piezoelectric devices (bulk wave devices, surface wave devices))
- Acoustooptic Device Applied to Strain Sensing System with Compensated Temperature Characteristics
- Longitudinally Coupled Resonator Filter Using Edge Reflection of Bleustein-Gulyaev-Shimizu and Shear Horizontal Waves with Various Bandwidths Realized by Selecting Substrates