Dynamic Temperature Measurement
OwnerWilliam B. Sullivaninventor
Life of this patent
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Abstract
An arrangement for accurately measuring the frequency of an RF signal is disclosed. The arrangement includes a coaxial delay line carrying the RF signal and a means for directly measuring the resistance of the coaxial delay line and which resistance measurement is directly correlatable to temperature changes of the coaxial delay line. The arrangement, in response to the changes in the temperature of the coaxial delay line, provides appropriate signals to compensate for the temperature changes in order to prevent any temperature changes from degrading the accuracy of the frequency measured by the arrangement.
Claims6
A correlator comprising:
- a) means for receiving and directing an RF signal into both a delay path and a reference path and developing an output voltage representative of and proportional to at least one of the sine and cosine of the phase difference of the RF signal as measured between the delay and reference paths;
- b) resistance measuring means directly connected to one of the delay and reference paths for directly measuring the resistance of the corresponding delay and reference paths and developing an output signal representative of said directly measured resistance;
- and
- c) detecting means receiving the output signal of said direct resistance measuring means for detecting changes thereto and developing an output signal representative of the changes thereof.
A method of measuring the temperature of a correlator having delay and reference paths so that temperature changes to the correlator does not degrade the measurement accuracy of the correlator, said method comprising the steps of;
- (a) connecting resistance measuring means directly to one of said reference and delay paths for directly measuring the resistance of said one of said reference and delay paths and developing an output signal representative of said directly measured resistance;
- and
- (b) directly connecting detecting means to receive the output signal of said direct resistance measuring means for detecting changes thereto and developing an output signal representative of the changes thereof.
Dependencies are inferred from the claim text.