Peaking control for wideband laser driver applications
AssigneeSirenza Microdevices, Inc.
InventorsKevin Wesley Kobayashi, George W. McIver
Life of this patent
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Abstract
An apparatus comprising a first amplifier, a second amplifier and a control circuit. The first amplifier may be configured to present a first amplified output signal in response to an input signal. The second amplifier may be configured to present a second amplified output signal to provide a shaped signal peaking response in response to the input signal. The first and second amplified output signals are generally combined. The control circuit may be configured to control a ratio between the first amplified output signal and the second amplified output signal. The ratio controls an amount of the peaking response.
Claims22
An apparatus comprising:
- a first amplifier configured to present a first amplified output signal in response to an input signal;
- a second amplifier configured to present a second amplified output signal to provide a shaped signal peaking response in response to said input signal, wherein said first and second amplified output signals are combined;
- a control circuit configured to control a ratio between said first amplified output signal and said second amplified output signal, wherein said ratio controls an amount of said peaking response;
- and
- a coupling circuit configured between said input signal and said first and second amplifiers, wherein said coupling circuit is configured to increase the speed of propagation of said input signal.
The apparatus according to claim 7, wherein said control circuit is configured to generate (i) a first control signal configured to control said first amplifier and (ii) a second control signal configured to control said second amplifier.
The apparatus according to claim 8, wherein said first and second control signals comprise portions of a current source.
An apparatus comprising:
- means for generating a first amplified output signal in response to an input signal;
- means for generating a second amplified output signal for providing a shaped signal peaking response in response to said input signal, wherein said first and second amplified output signals are combined;
- means for controlling a ratio between said first amplified output signal and said second amplified output signal, wherein said ratio controls an amount of said peaking response;
- and
- means for coupling said input signal and said first and second amplifiers, wherein said coupling means increases the speed of propagation of said input signal.
A method for controlling an output signal comprising the steps of:
- (A) generating a first amplified output signal in response to an input signal;
- (B) generating a second amplified output signal for providing a shaped signal peaking response in response to said input signal, wherein said first and second amplified output signals are combined;
- (C) controlling a ratio between said first amplified output signal and said second amplified output signal, wherein said ratio controls an amount of said peaking response;
- and
- (D) increasing the speed of propagation of said input signal before said input signal is received by step (A) and step (B).
Dependencies are inferred from the claim text.