RESONATOR, DUPLEXER, AND COMMUNICATION DEVICE

PROBLEM TO BE SOLVED: To provide a duplexer for separating a transmitting signal and a received signal in a communication device, in which the frequency characteristics for both the transmitting signal and received signal are variable.SOLUTION: The duplexer includes a transmission side resonator of...

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Bibliographische Detailangaben
Hauptverfasser:	SHIBA TAKASHI, TONE MASAZUMI, IKEDA KAZUKI, YAMAMOTO AKIO, HIKINO OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE TRANSMISSION WAVEGUIDES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a duplexer for separating a transmitting signal and a received signal in a communication device, in which the frequency characteristics for both the transmitting signal and received signal are variable.SOLUTION: The duplexer includes a transmission side resonator of variable frequency characteristics having a resonance section for passing the signals of transmission frequency band with low loss and a resonance section for attenuating signals of reception frequency band, a reception side resonator having a resonance section for attenuating the signals of transmission frequency band and a resonance section for passing the signals of reception frequency band with low loss, a matching circuit for intermediating the transmission side resonator and an antenna terminal, and a matching circuit for intermediating the reception side resonator and an antenna terminal.