PURPOSE: To prevent a transmission signal from being leaked between incoming and outgoing lines, by performing folding through the use of a power separation filter provided at an input and an output side of a relay amplifier.
CONSTITUTION: A transmission signal is relayed through an HPF29, a relay amplifier 27, and an HPF30 as shown in thick arrows and also through an HPF31, a relay amplifier 28, and an HPF32. On the other hand, the DC power component supplies power to the amplifier 27 through a bypass impedance of the HPF29, an LPF33, a voltage drop element 37, LPFs 43, 46, a bypass inductance of the HPF32, and a transmission line 3 from a transmission line 2 as shown in the arrows. Similarly, power is applied to the amplifier 28 through a bypass inductance of the HPF31, an LPF35, a voltage drop element 38, LPFs 44, 34, bypass impedance of the HPF30, and the line 2.
| WO/1980/002631 | DATA TRANSMISSION ARRANGEMENT |
WATANABE MASAAKI
SAITOU KOUICHI
