Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-07-19
2005-07-19
Tibu, Binh (Department: 2643)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C330S069000, C330S104000, C330S12400D
Reexamination Certificate
active
06920336
ABSTRACT:
Broadband driver for signals that are transmitted in different frequency ranges, comprising:(a) a first broadband driver circuit (19) for driving first signals having signal frequencies that lie in a first frequency range;(b) a second broadband driver circuit (24) for driving second signals having signal frequencies that lie in a second frequency range;(c) where at least one of the two broadband driver circuits (19) has a frequency-dependent positive-feedback circuit (44) for impedance synthesis of a frequency-dependent output impedance (Zout) of the broadband driver circuit (19), and where the output impedance (Zout) has a different value in the first frequency range than in the second frequency range.
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Zojer et al., “A Broadband High-Voltage SLIC for a Splitter- and Transformer-Less Combined ADSL-Lite/POTS Linecard,” IEEE Internatioanl Solid-State Circuits Conference, p. 304-305.
Jenkins & Wilson & Taylor, P.A.
Tibu Binh
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