The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2003
Filed:
Apr. 12, 2000
Stanley Panton, Peterborough, CA;
Bogdan Cherek, Peterborough, CA;
Siemens Milltronics Process Instruments Inc., Peterborough, CA;
Abstract
A pulse-echo ranging system is described employing a microwave transducer head ( ) providing an echo profile output signal which is largely compatible with receivers ( ) and echo processing systems ( ) designed for acoustic transducers. The transducer head employs novel microwave pulse generators ( ) each utilizing a microwave cavity ( ) excited by an avalanche discharge through a small signal diode (D D ) initiated by avalanche of a driver transistor (TR TR ) by a trigger pulse. Repeated pulse from one generator ( ) are transmitted by an antenna ( ) towards a target, and return are mixed with pulses from the second generator ( ) which are subject to a progressively swept delay relative to the transmitter pulses. The mixer output is applied to a tuned amplified ( ) to extract components at an alias frequency related to the sweep rate of the delay relative to the transmitter frequency. The aliased signal is passed to a receiver ( ) and echo processing system ( ).