Communications: directive radio wave systems and devices (e.g. – Radio wave absorber
Patent
1989-10-17
1991-01-29
Moskowitz, Nelson
Communications: directive radio wave systems and devices (e.g.,
Radio wave absorber
342 2, H01Q 1700
Patent
active
049890069
ABSTRACT:
Microwave absorption in a varying magnetic field is investigated near electron cyclotron resonance with a network analyzer which is capable of swept frequency measurements, and of measuring reflection and transmission coefficients from 0.045 to 18 GHz, with greater than 80 dB dynamic range. The experimental conditions are such that the plasma is generated in a modified Penning discharge in a magnetic mirror configuration. A microwave beam is caused to propagate along the axis of the magnetic mirror field in the plasma column. The microwave beam is attenuated near the electron cyclotron resonance frequency, providing microwave absorption over a range of frequencies spanning the electron cyclotron frequencies present in the axially varying magnetic field. The attenuation, along with hot-plasma effects, are measured as a function of frequency by the network analyzer.
REFERENCES:
patent: 3127608 (1964-03-01), Eldredge
patent: 3713157 (1973-01-01), August
patent: 3773684 (1973-11-01), Marks
patent: 4030098 (1977-06-01), Roth
patent: 4791419 (1988-12-01), Eubanks
L. Jiang et al, "Experimental Results of Microwave Absorption with Varying Magnetic Field in A Modified Penning Discharge", Presented at the Thirtieth Annual Meeting of the APS Division of Plasma Physics, Hollywood, Fla, Oct. 31-Nov. 4, 1988, APS Bulletin, vol. 33, No. 9, p. 1900 (1988).
Auton William G.
Hellner Mark
Moskowitz Nelson
Singer Donald J.
The United States of America as represented by the Secretary of
LandOfFree
Microwave absorption system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microwave absorption system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave absorption system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-816753