US 2010/0073038 A1 · Method and apparatus for reducing transmitter AC-coupling droop

Abstract

As part of a transmitter and receiver system a droop compensator is provided between the channel isolation device and the driver system to compensate for reduced transition densities. The droop compensator is configured to improve power transfer to the channel in response to reductions in transition density without affecting power transfer during periods of high transition density. The droop compensator creates an impedance mismatch between the matching circuit and driver in relation to the line impedance. The droop compensator may comprise passive elements, such as capacitors, inductors, or resistor, or active elements including transistors or power control modules. The droop compensator may be configured to operate with transformer line couplers or capacitor line couplers, and either current drivers or voltage drivers.

Claims19

Dependent claims

A system for reducing voltage droop in a communication system comprising:

a signal source configured to generate a signal, the signal to be transmitted over a communication channel;
a driver configured to amplify the signal;
a line isolation device configure to isolate the driver from the channel;
and
one or more impedance mismatching devices configured to offset low frequency impedance mismatches of the driver and the line isolation device, with respect to the channel characteristic impedance.

2 more elements

Dependencies are inferred from the claim text.

Method and apparatus for reducing transmitter AC-coupling droop

Life of this patent

Method and apparatus for reducing transmitter AC-coupling droop

Life of this patent

Abstract

Claims19