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Accession Number:
AD0804824
Title:
MEASUREMENT TECHNIQUES FOR COMPLEX PERMEABILITY AND PERMITTIVITY OF HIGHLY CONDUCTIVE MATERIALS AT MICROWAVE FREQUENCIES.
Corporate Author:
EMERSON AND CUMING CANTON MA
Report Date:
1966-08-01
Abstract:
New techniques are presented for the measurement of complex permeability and permittivity of highly conductive materials at microwave frequencies. The techniques are also applicable to low-loss and non-magnetic materials. Experiences are reported with ten methods 1 free-space reflectometer, 2 free-space Michelson interferometer, 3 Fabry-Perot variation of free-space Michelson interferometer, 4 Masons double-incidence technique for short- and open-circuit in waveguide, 5 Masons double-incidence technique for single interface in waveguide, 6 Masons double-incidence technique combined with transmission measurement in waveguide, 7 half thickness reflection with full thickness transmission in waveguide, 8 half and full thickness transmission in waveguide and free space, 9 short circuit-open circuit waveguide dielectrometer an accepted older waveguide method used for comparison, 10 transmission in free space an older free-space method for comparison. All measurements were made at X-band on a standard set of twelve specimens covering a wide range of dielectric properties. It is concluded that the free-space Michelson interferometer and the half and full thickness transmission-coefficient measurement in either waveguide or free space offer the best improvements over the older short circuit-open circuit transmission line technique. Data reduction procedures are presented for these best methods. Author
Descriptive Note:
Final rept. 1 Jul 65-1 Aug 66,
Pages:
0129
Contract Number:
AF 33(615)-2856
File Size:
0.00MB
