A high isolation hybrid circuit composed of a pair of transformers, a voltage control resistance (VCR) circuit and an automatic impedance control device is designed for a two-wire full duplex cable modem to adapt variable line impedance. A binary frequency shift keying (BFSK) cable modem using the new hybrid circuit with an isolation of 52 dB to 58 dB in the line impedance variation range of 400 to 950 ohm is demonstrated. The isolation of the new hybrid circuit is increased by more than 30 dB over the traditional hybrid circuit for a two-wire full duplex modem in the preset line impedance range.
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Jeich MAR, Guan-Chiun CHEN, Ming-Yi LAN, Luo-Shing LUO, "A Hybrid Circuit with High Isolation for a Two-Wire Full Duplex Cable Modem to Adapt to Variations in Line Impedance" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 1, pp. 352-354, January 2002, doi: .
Abstract: A high isolation hybrid circuit composed of a pair of transformers, a voltage control resistance (VCR) circuit and an automatic impedance control device is designed for a two-wire full duplex cable modem to adapt variable line impedance. A binary frequency shift keying (BFSK) cable modem using the new hybrid circuit with an isolation of 52 dB to 58 dB in the line impedance variation range of 400 to 950 ohm is demonstrated. The isolation of the new hybrid circuit is increased by more than 30 dB over the traditional hybrid circuit for a two-wire full duplex modem in the preset line impedance range.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_1_352/_p
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@ARTICLE{e85-b_1_352,
author={Jeich MAR, Guan-Chiun CHEN, Ming-Yi LAN, Luo-Shing LUO, },
journal={IEICE TRANSACTIONS on Communications},
title={A Hybrid Circuit with High Isolation for a Two-Wire Full Duplex Cable Modem to Adapt to Variations in Line Impedance},
year={2002},
volume={E85-B},
number={1},
pages={352-354},
abstract={A high isolation hybrid circuit composed of a pair of transformers, a voltage control resistance (VCR) circuit and an automatic impedance control device is designed for a two-wire full duplex cable modem to adapt variable line impedance. A binary frequency shift keying (BFSK) cable modem using the new hybrid circuit with an isolation of 52 dB to 58 dB in the line impedance variation range of 400 to 950 ohm is demonstrated. The isolation of the new hybrid circuit is increased by more than 30 dB over the traditional hybrid circuit for a two-wire full duplex modem in the preset line impedance range.},
keywords={},
doi={},
ISSN={},
month={January},}
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TY - JOUR
TI - A Hybrid Circuit with High Isolation for a Two-Wire Full Duplex Cable Modem to Adapt to Variations in Line Impedance
T2 - IEICE TRANSACTIONS on Communications
SP - 352
EP - 354
AU - Jeich MAR
AU - Guan-Chiun CHEN
AU - Ming-Yi LAN
AU - Luo-Shing LUO
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2002
AB - A high isolation hybrid circuit composed of a pair of transformers, a voltage control resistance (VCR) circuit and an automatic impedance control device is designed for a two-wire full duplex cable modem to adapt variable line impedance. A binary frequency shift keying (BFSK) cable modem using the new hybrid circuit with an isolation of 52 dB to 58 dB in the line impedance variation range of 400 to 950 ohm is demonstrated. The isolation of the new hybrid circuit is increased by more than 30 dB over the traditional hybrid circuit for a two-wire full duplex modem in the preset line impedance range.
ER -