Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1980-10-10
1982-11-16
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
G01R 2704
Patent
active
043596835
ABSTRACT:
A microwave interferometer comprising a source of microwave energy the output of which is equally divided between an antenna and a short circuit. The antenna is adapted for the transmission of microwave energy to and the subsequent reception of reflected microwave energy from an object in close proximity to the antenna. The phase difference between the microwave radiation reflected from the short circuit and the object is directly proportional to the distance between the antenna and the object.
REFERENCES:
patent: 4045727 (1977-08-01), Glover
patent: 4087745 (1978-05-01), Kennedy, Jr. et al.
patent: 4281285 (1981-07-01), Bastida
Krawczewicz Stanley T.
Rolls-Royce Limited
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