TRANSMISSION DEVICE, TRANSMISSION METHOD, AND TRANSMISSION SYSTEM

A transmission apparatus (100) includes a communication unit (110), including input/output terminals configured to input and output an electrical signal of a predetermined frequency, and two coupling electrodes (120a, 120b) each configured to couple to the input/output terminal and to couple to one...

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Bibliographische Detailangaben
1. Verfasser:	WASHIRO Takanori
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
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Beschreibung
Zusammenfassung:	A transmission apparatus (100) includes a communication unit (110), including input/output terminals configured to input and output an electrical signal of a predetermined frequency, and two coupling electrodes (120a, 120b) each configured to couple to the input/output terminal and to couple to one transmission medium (200) so as to be side-by-side in a longitudinal direction of the transmission medium (200). An input/output circuit of the communication unit (110) is configured by a balanced circuit capable of causing the two coupling electrodes (120a, 120b) to function interchangeably. The two coupling electrodes (120a, 120b) are arranged along the longitudinal direction of the transmission medium (200), when coupled to the transmission medium (200), at positions symmetrical with respect to a plane orthogonal to a direction in which the electrical signal flows. When the length from one coupling electrode of the two coupling electrodes (120a, 120b) to one end of the transmission medium (200) in the longitudinal direction thereof is an electrical length in a range of (2n·90±45)°, where n is an integer of at least 0, of the electrical signal and the length from another coupling electrode of the two coupling electrodes (120a, 120b) to another end of the transmission medium (200) in the longitudinal direction thereof is an electrical length in a range of ((2n+1)·90±45)° of the electrical signal while the two coupling electrodes (120a, 120b) are coupled to the transmission medium (200), the communication unit (110) transmits and receives the electrical signal to and from another transmission apparatus (300), coupled to a range of the transmission medium (200) having an electrical length in a range of (2n·90±45)° of the electrical signal, by a region of the transmission medium (200), from a position where the other coupling electrode is coupled to the other end, functioning as ground when the two coupling electrodes (120a, 120b) are coupled to the transmission medium (200).