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Coplanar interdigitated grid detector with single electrode readout

United States Patent

April 17, 2001
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
The coplanar interdigitated grid technique with single electrode readout provides substantial spectral performance improvement over that of conventional full-area planar electrode detectors and over coplanar interdigitated grid detectors which measure the difference between the induced charge signals from two interdigitated coplanar grid electrodes. The signal from only one interdigitated grid electrode is read out. The signal response is optimized by changing the relative areas of the two grid electrodes and the bias applied across the detector. Only one preamplifier is needed and signal subtraction is not necessary. This eliminates the electronic noise contribution from the additional preamplifier used in the normal coplanar grid implementation, and conventional single-amplifier detector electronics can be used.
Luke; Paul N. (Castro Valley, CA)
The Regents of the University of California (Oakland, CA)
09/ 112,399
July 8, 1998
GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant to Contract No. DE-ACO3-76SF00098 between the United States Department of Energy and the University of Calif.