Equalization of Frequency-Dependent Gain

摘要

Systems, devices, and methods for determining and establishing frequency-dependent gain compensation in wide bandwidth communication systems are disclosed. Variable frequency-dependent gain compensation circuits, or variable equalizers, have settings that configure them to establish discrete frequency-dependent gain compensation. The frequency-dependent gain compensation can include various types and levels of gain slope and/or ripple. The settings of the variable equalizers can be set by control signals established a control circuit in response to signals from an external computer. The variable equalizers are coupled to other circuits or devices and the frequency-dependent gain of the combined circuit are measured. The settings of the variable equalizer are then changed to establish an optimal frequency-dependent gain profile or frequency-dependent gain that is closest to a predetermined frequency-dependent target gain profile. The settings can then be saved in a memory or register.

主权项

1. A circuit comprising:
a variable gain compensation circuit to establish a variable frequency-dependent gain, the variable gain compensation circuit including a variable gain compensation device comprising:
an input terminal;an output terminal;a first circuit element coupled between a first pair of switches to selectively form a first signal path;a second circuit element different than the first circuit element and coupled between a second pair of switches to selectively form a second signal path; and a control circuit comprising an input terminal and coupled to the variable gain compensation circuit, wherein the control circuit is configured to control the first and second pair of switches to establish one or more of the first and second signal paths and generate the variable frequency-dependent gain between the input terminal and the output terminal of the variable gain compensation device in response to a signal received on the input terminal of the control circuit from an external source.