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Accession Number:
AD0255148
Title:
DESIGN OF A MOLECULAR AMPLIFIER GROUP
Corporate Author:
AIRBORNE INSTRUMENTS LAB INC MINEOLA N Y
Report Date:
1960-06-01
Abstract:
A traveling-wave maser TWM using a ruby crystal in a 1-78 inch long slow-wave comb structure was operated successfully. Operation is most efficient when the external magnetic field is oriented at an angle of 90 degrees with respect to the C-axis. A 0-degree C-axis crystal was used instead of the standard 60-degree C- axis crystal. This resulted in a considerable improvement in gain for the rf circuit geometry used. The final breadboard maser configuration yielded an average electronic gain of approximately 5 db per inch from 2150 to 2350 mc at a bath temperature of 1.8 K. Unidirectional loss was successfully incorporated in the maser by using polycrystalline yttrium iron arnet YIG disks. The td ratio required for coincidence of the d-c magnetic fields for ferrimagnetic resonance and for maser action was determined. Isolator reverse loss varies from 4.0 dbin. at the low-frequency end of the band to 8.5 dbin. at the high-frequency end. The figure of merit for the isolator is about 20. 9author
Pages:
0001
Contract Number:
AF33 600 38862
File Size:
0.00MB
