■ Features of langasite SAW filters
Low insertion loss and wide passband: large electromechanical coupling coefficient
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1. |
Steep skirts of passband: the greatest feature of langasite wafers |
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2. |
Large rejection outside passband: large electromechanical coupling coefficient |
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3. |
Excellent phase linearity |
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4. |
Excellent temperature stability: small temperature coefficient of frequency. |
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■ Characteristics of langasite SAW filter for base station
Filter performance
TTS level
Passband ripple
Group delay
Steep passband skirts of langasite filters
Comparison with quartz filter
LGS(48.5º Y-26.7º X LGS)
Example of SAW filter specification for base stations
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