Electromagnetics in characterizations

(cont.) Characterization of the differential guided mode of a coupled-strip transmission line allows us to understand its behaviors in high frequency circuit applications. S-parameters of the differential mode of a coupled-strip transmission line on a multi-layer silicon substrate extracted from 4-port measurements and simulations are de-embedded by the impedance/admittance subtraction method. By accurately determining the input inductance of the connecting pads, the parameters of the transmission line itself can be de-embedded. For the specific substrate profile considered, it is found that there is a practical upper limit on the value of the differential impedance. Baseline estimation for synthetic aperture radar interferometry is used to refine the height estimation of the resulting digital elevation map. Furthermore, preprocessing is used to reduce the effects of local phase inconsistencies caused by noise. By incorporating the information of the ground control points in the height inversion process, the initial estimation of the baseline parameters based on the satellite state vectors and the commonly used high order polynomial fitting can be improved. In this study, a simulated interferogram of a 2-D terrain is generated, and different levels of phase noise as well as uncertainties in baseline parameters are introduced. Five control points are use in a 60 x 60 km area. The platform height is 500 km and the frequency used is in the L-band ...

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2003

Author dc:creator

• Wu, Bae-Ian, 1975-

Advisor dc:contributor.advisor

• Jin A. Kong.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/28269

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/28269