Optical communications – Receiver
Reexamination Certificate
2007-05-01
2007-05-01
Phan, Hanh (Department: 2613)
Optical communications
Receiver
C398S135000, C398S136000, C398S128000, C398S130000, C398S133000, C398S115000, C398S209000, C398S210000, C398S213000, C398S214000, C250S2140AG, C250S2140RC, C250S2140AG, C250S2140LA, C330S308000, C330S059000, C330S282000, C330S058000, C330S060000, C375S316000, C375S317000, C375S318000, C455S130000, C455S135000, C455S136000
Reexamination Certificate
active
11080161
ABSTRACT:
An Improved Signal Receiver Having Wide Band Amplification Capability is disclosed. Also disclosed is a receiver that is able to receive and reliably amplify infrared and/or other wireless signals having frequency bandwidths in excess of 40 MHz. The receiver of the present invention reduces the signal-to-noise ratio of the received signal to ⅕thof the prior systems. The preferred receiver eliminates both the shunting resistor and the feedback resistor on the input end by amplifing the signal in current form. Furthermore, the receiver includes transconductance amplification means for amplifying the current signal without the need for Cascode stages. Finally, the receiver includes staged amplification to amplify the current signal in stages prior to converting the signal into a voltage output.
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Grace Alan
Hamilton T. Allan
Imperium Patent Works
Phan Hanh
Wallace Darien K.
ZiLOG, Inc.
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