VARIABLE-FREQUENCY FILTER, RF FRONT END CIRCUIT, AND COMMUNICATION DEVICE
A variable-frequency filter (10) is provided with a series arm resonance circuit (20) and a parallel arm resonance circuit (30). The series arm resonance circuit (20) is provided with acoustic wave resonance circuits (21, 22, 23) having different resonant frequencies, a variable capacitor (VC20) and...
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Main Authors | , |
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Format | Patent |
Language | English French Japanese |
Published |
27.04.2017
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Subjects | |
Online Access | Get full text |
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