Citation
Abstract
This article presents the results of a study that shows that approximate formulas that have been used in the past for computing the noise temperatures of reflectors (due to surface resistivity losses) are more accurate than previously believed. Instead of being accurate only for incidence angles up to 40 deg, the recent study shows that at 8.45 GHz for a flat aluminum reflector the formulas are accurate to 0.0003 K and to 0.5 K for incidence angles up to 89.2 deg for perpendicular and parallel polarizations. Derivations of the exact and approximate noise temperature formulas also are given.
Keywords
reflector noise temperatures
surface resistivity losses
Details
- Volume
- 42-154
- Published
- August 15, 2003
- Pages
- 1–13
- File Size
- 120.6 KB