MULTIPLEXER, RADIO-FREQUENCY FRONT-END CIRCUIT, COMMUNICATION APPARATUS, AND ELASTIC WAVE FILTER
A multiplexer includes a first filter located between a common terminal and a first terminal to pass a signal in a first passband, and a second filter located between the common terminal and a second terminal to pass a signal in a second passband. A first series arm circuit included in the first fil...
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Format | Patent |
Language | English |
Published |
14.01.2021
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Subjects | |
Online Access | Get full text |
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Abstract | A multiplexer includes a first filter located between a common terminal and a first terminal to pass a signal in a first passband, and a second filter located between the common terminal and a second terminal to pass a signal in a second passband. A first series arm circuit included in the first filter includes a first series arm resonator and a second series arm resonator. The first series arm circuit is connected to the common terminal not through a circuit including an elastic wave resonator and a connecting point of the circuit. The first series arm circuit has a first antiresonance frequency and a second antiresonance frequency higher than the first antiresonance frequency. The second antiresonance frequency is higher than a higher edge of the first passband. The first antiresonance frequency is at or lower than a higher edge of the second passband. |
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AbstractList | A multiplexer includes a first filter located between a common terminal and a first terminal to pass a signal in a first passband, and a second filter located between the common terminal and a second terminal to pass a signal in a second passband. A first series arm circuit included in the first filter includes a first series arm resonator and a second series arm resonator. The first series arm circuit is connected to the common terminal not through a circuit including an elastic wave resonator and a connecting point of the circuit. The first series arm circuit has a first antiresonance frequency and a second antiresonance frequency higher than the first antiresonance frequency. The second antiresonance frequency is higher than a higher edge of the first passband. The first antiresonance frequency is at or lower than a higher edge of the second passband. |
Author | NOSAKA, Koji |
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RelatedCompanies | Murata Manufacturing Co., Ltd |
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Snippet | A multiplexer includes a first filter located between a common terminal and a first terminal to pass a signal in a first passband, and a second filter located... |
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SubjectTerms | BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS TRANSMISSION |
Title | MULTIPLEXER, RADIO-FREQUENCY FRONT-END CIRCUIT, COMMUNICATION APPARATUS, AND ELASTIC WAVE FILTER |
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