Title :
Temperature measurements of a high-power microwave feedhorn window
Author :
Hoppe, Daniel J. ; Perez, Raul M. ; Glazer, Stuart D.
Author_Institution :
Jet Propulsion Lab., Pasadena, CA, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
Temperature measurements of a high-power microwave feedhorn window during transmitter operation at 365 kW CW and 8.5 GHz made using an imaging infrared radiometer are discussed. The window under investigation was constructed of HTP-6, a high-thermal-performance material developed to shield the Shuttle Orbiter from the heat of reentry. The measurement technique is described and experimental results are presented. The window performed adequately at 365 kW CW with a center temperature of 475°C. The tests verify that HTP-6 can be used as a window material or a support structure in high-power waveguide at power densities of 1.47 kW/cm2 for extended periods of time, with no change in its mechanical characteristics
Keywords :
infrared detectors; microwave measurement; radar transmitters; radiometers; temperature measurement; 365 kW; 475 degC; 8.5 GHz; HTP-6; high-power microwave feedhorn window; high-power waveguide; imaging infrared radiometer; mirror; temperature measurement; transmitter operation; Electromagnetic heating; Infrared imaging; Materials testing; Measurement techniques; Microwave imaging; Microwave radiometry; Optical imaging; Radio transmitters; Temperature measurement; Waveguide transitions;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
