Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1982-04-22
1984-10-23
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324140D, G01R 2704
Patent
active
044790872
ABSTRACT:
An apparatus for measuring the Standing Wave Ratio and the RF transmitted power is in a transmission line. The ratio of the reflected component over the incident component of the transmitted signal is indicated on a logarithmic dot bar readout driven by the outputs of a stack of comparators. The comparators are separately referenced to a voltage divider ladder to which is applied a first DC voltage proportional to the incident component. The inputs of the comparator receive a second DC voltage signal proportional to the reflected component. The readout is provided with a scale directly indicating the Standard Wave Ratio. A similar circuit with linear readout referenced to a full scale voltage received the first DC voltage signal on its joint comparator inputs in order to display the power transmitted on the line.
REFERENCES:
patent: 3704409 (1972-11-01), Oomen
patent: 4110685 (1978-08-01), Leenerts
patent: 4249258 (1981-02-01), Craven
patent: 4262246 (1981-04-01), Fuji
patent: 4318152 (1982-03-01), Weber
Krawczewicz Stanley T.
Solis Jose M.
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