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UBC Theses and Dissertations
Techniques for high-speed time-resolved device characterization Shah, Saurin
Abstract
The objective of this thesis is to address two open issues in time-resolved measurements of electronic devices. The first is the ability to perform measurements close to the device under test: we report a new approach to recover temporally-overlapping incident and reflected signals near a device. The technique involves electro-optic measurement at two locations. With suitable time-domain or Fourier-transform processing, the measured waveforms can be decomposed into components propagating towards and away from the device. We show experimental results for coplanar structures. In the second part, we have identified a new feature in measured signals that we can attribute to substrate waves excited photoconductively during electro-optic sampling on coplanar striplines. Measurements at several positions laterally displaced from the center of the transmission line show that this substrate signal is confined to the neighborhood of the electrodes when the substrate is thin. We also show that this feature, which can be an impediment to accurate S-parameter characterization, can be eliminated by delaying it out of the time window of interest. Finally, the Appendix lists the fabrication steps and process parameters for a lift-off process used to fabricate some of the samples used in this project.
Item Metadata
Title |
Techniques for high-speed time-resolved device characterization
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1995
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Description |
The objective of this thesis is to address two open issues in time-resolved measurements
of electronic devices. The first is the ability to perform measurements close to the device
under test: we report a new approach to recover temporally-overlapping incident and
reflected signals near a device. The technique involves electro-optic measurement at
two locations. With suitable time-domain or Fourier-transform processing, the measured
waveforms can be decomposed into components propagating towards and away from the
device. We show experimental results for coplanar structures.
In the second part, we have identified a new feature in measured signals that we can
attribute to substrate waves excited photoconductively during electro-optic sampling on
coplanar striplines. Measurements at several positions laterally displaced from the center
of the transmission line show that this substrate signal is confined to the neighborhood
of the electrodes when the substrate is thin. We also show that this feature, which can be
an impediment to accurate S-parameter characterization, can be eliminated by delaying
it out of the time window of interest.
Finally, the Appendix lists the fabrication steps and process parameters for a lift-off
process used to fabricate some of the samples used in this project.
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Extent |
2983595 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0064914
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1996-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.