Circuit for transmitting/receiving signals

PROBLEM TO BE SOLVED: To prevent interference between a transmission signal and a reception signal by increasing an attenuation of a transmission frequency band without increasing a passing loss at the transmission frequency band and a reception frequency band. SOLUTION: A transmission circuit 12 an...

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Bibliographische Detailangaben
1. Verfasser:	AOKI ICHIHARU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE TRANSMISSION WAVEGUIDES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent interference between a transmission signal and a reception signal by increasing an attenuation of a transmission frequency band without increasing a passing loss at the transmission frequency band and a reception frequency band. SOLUTION: A transmission circuit 12 and a reception circuit 5 are connected to an antenna 3, wherein a transmission frequency band to which a channel of a transmission signal outputted from the transmission circuit 1 to the antenna 3 is selected close to a reception frequency band to which a channel of a reception signal received by the reception circuit 5 from the antenna 3 and an attenuation means 7 that attenuates the transmission frequency band signal is placed between the antenna 3 and the reception circuit 5.