Probe for combined signals
First Claim
Patent Images
1. A probe for simultaneously communicating a first signal and a second signal to a device, said probe comprising:
- (a) a first conductor connectable to a source of said first signal and having a suspended end portion;
(b) a first contact tip nonconductively affixed to said suspended end portion of said first conductor, said first contact tip engageable with a first contact pad of said device;
(c) a resistor conductively connecting said first contact tip to said first conductor; and
(d) a second conductor connectable to a source of said second signal and arranged to provide a conductive path from said source of said second signal to said first contact pad while said first contact tip is in engagement with said first contact pad.
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Accused Products
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.
763 Citations
24 Claims
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1. A probe for simultaneously communicating a first signal and a second signal to a device, said probe comprising:
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(a) a first conductor connectable to a source of said first signal and having a suspended end portion; (b) a first contact tip nonconductively affixed to said suspended end portion of said first conductor, said first contact tip engageable with a first contact pad of said device; (c) a resistor conductively connecting said first contact tip to said first conductor; and (d) a second conductor connectable to a source of said second signal and arranged to provide a conductive path from said source of said second signal to said first contact pad while said first contact tip is in engagement with said first contact pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A probe for simultaneously communicating a first signal and a second signal to a device, said probe comprising:
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(a) a support block; (b) a first conductor having a first end portion conductively connected to a first connector affixed to said support block and a suspended second end portion, said first conductor conductively connectable to a source of said first signal through said first connector; (c) a first contact tip conductively engageable with a first contact pad of said device and affixed relative to said second end portion of said first conductor but not conductively connected to said first conductor; (d) a resistor conductively connecting said first contact tip and said first conductor; and (e) a second conductor having a first end portion conductively connected to a second connector affixed to said support block and a suspended second end portion, said second conductor connectible to a source of said second signal through said second connector and arranged to provide a conductive path to said first contact pad for said second signal while said first contact tip is in engagement with said first contact pad. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification