From Snappy Probe for combined signals Number:7,417,446 from the United States Patent and Trademark Office (PTO) owispatent A direct current and a modulation signal are simultaneously applied to contact pads on a device under test, such as a laser diode, with a probe that reduces signal distortion and power dissipation by transmitting a modulated signal through an impedance matching resistor and transmitting of a direct current over a second signal path that avoids the impedance matching resistor.</P><H combined, signals, Probe, for, combi, 7417446.html, Patent, pto, 7417446

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Title: Probe for combined signals

Abstract: A direct current and a modulation signal are simultaneously applied to contact pads on a device under test, such as a laser diode, with a probe that reduces signal distortion and power dissipation by transmitting a modulated signal through an impedance matching resistor and transmitting of a direct current over a second signal path that avoids the impedance matching resistor.

Patent Number: 7,417,446 Issued on 08/26/2008 to Hayden, et al.

Inventors:	Hayden; Leonard (Portland, OR), Rumbaugh; Scott (Tigard, OR), Andrews; Mike (Hillsboro, OR)
Assignee:	Cascade Microtech, Inc. (Beaverton, OR)
Appl. No.:	11/975,937
Filed:	October 22, 2007

Related U.S. Patent Documents


Application Number	Filing Date	Patent Number	Issue Date
11901626	Sep., 2007
11714003	Mar., 2007	7285969
11442503	May., 2006	7205784
11077810	Mar., 2005	7075320
10928688	Aug., 2004	7046023
10712579	Nov., 2003	6806724
10294130	Nov., 2002	6724205

Current U.S. Class: 324/754

Current International Class: G01R 31/02 (20060101)

References Cited [Referenced By]

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