Communications: directive radio wave systems and devices (e.g. – Determining distance – Material level within container
Reexamination Certificate
2008-09-16
2009-12-15
Pihulic, Dan (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Material level within container
Reexamination Certificate
active
07633434
ABSTRACT:
In a pulse radar system where received echo pulses are expanded in time by multiplication with sampling pulses and subsequent integration, the effect of disturbances on the integration is reduced by using a sample and hold circuit having a switch and a hold capacitor and wherein the switch is closed only when a sampling pulse is applied for the multiplication.
REFERENCES:
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patent: 4132991 (1979-01-01), Wocher et al.
patent: 4521778 (1985-06-01), Knepper
patent: 6060915 (2000-05-01), McEwan
patent: 6087978 (2000-07-01), Lalla et al.
patent: 2006/0187111 (2006-08-01), Uchino
patent: WO 0214899 (2002-02-01), None
Pihulic Dan
Siemens Milltronics Process Instruments Inc.
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