Communications: electrical – Continuously variable indicating – Condition responsive
Reexamination Certificate
2008-07-29
2008-07-29
Mullen, Jr., Thomas J (Department: 2612)
Communications: electrical
Continuously variable indicating
Condition responsive
C324S076510, C340S447000
Reexamination Certificate
active
11335183
ABSTRACT:
Methods for determining the resonant frequency for interrogation of a resonant device include steps for generating and transmitting RF interrogation pulses of various bandwidths to energize one or more SAW resonator elements. Initial RF interrogation pulses have a relatively wide bandwidth, such that the general location of a resonant device's resonant frequency can be expediently determined. Then, interrogation pulses having smaller bandwidth pulses can be transmitted near the determined general location of resonance to further narrow the location of resonance. In some emodiments, one or more initial interrogation pulses are transmitted in the center of or at an expected value within a range of operation of a resonant device. If the resonant frequency is not located at this initial location, then the range of operation is divided into halves (or other number of generally equal frequency range segments) and one or more interrogation pulses are transmitted at the center of each of the new search frequency range segments. This process of partitioning the search frequency range continues until the resonant frequency is located.
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O'Brien George P.
Thiesen Jack
Dority & Manning P.A.
Michelin Recherche et Technique S. A.
Mullen, Jr. Thomas J
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