Michael St Germain

US Patent:

20120268204, Oct 25, 2012

Filed:

Apr 25, 2011

Appl. No.:

13/093372

Inventors:

Michael St. Germain - Somerville MA, US
Jennifer Lloyd - North Andover MA, US
Kimo Tam - Lincoln MA, US

Assignee:

ANALOG DEVICES, INC. - Norwood MA

International Classification:

H03F 3/45

US Classification:

330252

Abstract:

Apparatus and methods for equalization are provided. In one embodiment, an apparatus for equalizing an input voltage includes a first capacitor and a first resistor having a first end and a second end, the first end configured to receive the input voltage. The apparatus further includes a second resistor having a first end electrically connected to the second end of the first resistor at an output node. The apparatus further includes an inverting voltage buffer for substantially inverting the input voltage to generate an inverted input voltage. The apparatus further includes a transconductance buffer for receiving the inverted input voltage and for generating a current from a first end of the first capacitor to the output node having a magnitude equal to about the magnitude of the input voltage signal divided by the impedance of the first capacitor.

US Patent:

20070178849, Aug 2, 2007

Filed:

Feb 2, 2006

Appl. No.:

11/346003

Inventors:

Michael St. Germain - Medford MA, US
Kimo Tam - Lincoln MA, US

International Classification:

H04B 1/44

US Classification:

455083000

Abstract:

An impedance matched lane reversal switching system including first and second transceiver pairs, each of the pairs including a transmitter connected to a receiver, the output of the transmitter connected to the input of the receiver and to a node, the node of each pair interconnected with a transmission line and a switching circuit for selectively enabling one of the transmitters of one of the transceiver pairs and disabling the other and selectively utilizing one of the receivers of the other of the transceiver pairs and not the other to selectively reverse an egress side and an ingress side of the lane.