Precision Measurement and Calibration: ElectricityU.S. Government Printing Office, 1968 |
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Page 1
... accuracy in and understanding of all kinds of measurements has come with the recent rapid advances in modern technology . Radio frequency power measurement is no exception to this requirement . The basic principles of bolometric ...
... accuracy in and understanding of all kinds of measurements has come with the recent rapid advances in modern technology . Radio frequency power measurement is no exception to this requirement . The basic principles of bolometric ...
Page 3
... accuracy of the load lamp is quite poor ; matching its impedance to the transmission line is difficult , and the ... Accurate Bolometric Power Measure- ment : One could measure the resistance change of a bolome- ter element and calculate ...
... accuracy of the load lamp is quite poor ; matching its impedance to the transmission line is difficult , and the ... Accurate Bolometric Power Measure- ment : One could measure the resistance change of a bolome- ter element and calculate ...
Page 4
... accuracy deteriorates at the lower power levels , where an accurate measurement of a small change in a relatively large dc power is required . The advantage of the two types of thermocouple detectors is the simplicity of the indicating ...
... accuracy deteriorates at the lower power levels , where an accurate measurement of a small change in a relatively large dc power is required . The advantage of the two types of thermocouple detectors is the simplicity of the indicating ...
Page 11
... Accuracy Incident Power Absorbed Time Constant Thermal Devices a ) Basic c ) Twin 1 ) Static calorimeter 100 μW - 10 W All b ) Substitution 100 μW - 1 kW All 100 μW - 10 mW All +0.55 percent 10.5-13 percent 10.2-13 percent 100 percent ...
... Accuracy Incident Power Absorbed Time Constant Thermal Devices a ) Basic c ) Twin 1 ) Static calorimeter 100 μW - 10 W All b ) Substitution 100 μW - 1 kW All 100 μW - 10 mW All +0.55 percent 10.5-13 percent 10.2-13 percent 100 percent ...
Page 13
... Accuracy of bolometric power mea- surements , " Proc . IRE , vol . 40 , pp . 1042-1048 , September 1952 . [ 37 ] ... Accurate microwave component testing , " Electro- Tech . , vol . 76 , pp . 42-49 , October 1965 . [ 60 ] R. W. Beatty ...
... Accuracy of bolometric power mea- surements , " Proc . IRE , vol . 40 , pp . 1042-1048 , September 1952 . [ 37 ] ... Accurate microwave component testing , " Electro- Tech . , vol . 76 , pp . 42-49 , October 1965 . [ 60 ] R. W. Beatty ...
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Common terms and phrases
accuracy adaptor adjusted ammeter amplifier amplitude approximately attenuator bolometer mount bridge Bureau of Standards calibration calorimeter capacitance cavity characteristic impedance characteristics circuit coaxial line component conductor connectors constant detector device device under test dielectric diode dipole directional coupler effect efficiency Electronic equations field-strength meter frequency range function IEE London IEEE Trans impedance input insertion loss instrument IRE Trans laser limits load magnitude ment method Microwave Theory mismatch error modulation National Bureau noise temperature null obtained ohms oscilloscope output peak percent phase shifter power measurement power meter precision probe Proc pulse pulse power quency R. W. Beatty Radio ratio reference reflection coefficient reflectometer resistance resonator RF power sampling shown in Fig signal skin effect substitution superconductive Tech technique temperature terminal thermistor thermocouple tion transmission line tuner two-port uncertainty voltage voltmeter VSWR wave waveguide wavelength
Popular passages
Page 129 - ... pulse duration. The time interval between the first and last instants at which the instantaneous amplitude reaches a stated fraction of the peak pulse amplitude. pulse duration modulation.