Title :
Reflectivity of absorbers in 100-200 GHz range
Author :
Lehto, A. ; Raisanen, Antti
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Different types (pyramidal, convoluted, wedge, flat) of absorber panel made by several manufacturers have been measured at 107 and 183 GHz. These measurements revealed a rapid degradation of the quality of absorbers from 107 to 183 GHz: reflectivity increased nearly 10 dB. The best absorbers have reflectivities below -40 dB at 107 GHz and about -35 dB at 183 GHz.
Keywords :
anechoic chambers; electromagnetic wave absorption; microwave antennas; microwave measurement; 100 to 200 GHz; 107 GHz; 183 GHz; absorber panel; convoluted absorbers; flat absorbers; pyramidal absorbers; quality; reflectivity; wedge absorbers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911058
