An active impedance synthesis circuit, for example for XDSL splitters

The arrangement includes a transformer (T) having a primary winding (L1) and a secondary winding (L2), the transformer exhibiting an impedance (Zsh) across the primary winding (2), and an impedance synthesis circuit (K, H(s),g). The impedance synthesis circuit includes a transfer function element (H...

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Bibliographic Details
Main Authors DARIO, DANIELE, MASCHERA, DAVIDE
Format Patent
LanguageEnglish
French
German
Published 29.06.2005
Edition7
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
TELEPHONIC COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:The arrangement includes a transformer (T) having a primary winding (L1) and a secondary winding (L2), the transformer exhibiting an impedance (Zsh) across the primary winding (2), and an impedance synthesis circuit (K, H(s),g). The impedance synthesis circuit includes a transfer function element (H(s)) having a frequency spectrum. The transfer function element (H(s)) has associated a gain element (K) and a current source (g) controlled by the transfer function element (H(s)). The impedance synthesis circuit (K, H(s),g) is connected to said secondary winding (L2), so that the transformer (T) mirrors the impedance synthesized by the impedance synthesis circuit (K, H(s),g) into the impedance (Zsh) across said primary winding (L1). The primary (L1) winding is adapted to define the high voltage (HV) side of an XDSL splitter, while the impedance synthesis circuit (K, H(s),g) connected to the secondary winding (L2) is inherently a low voltage circuit.
Bibliography:Application Number: EP20030029556