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

Volume

39

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

501

Lastpage

503

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.106280

Filename

106280