Communications: directive radio wave systems and devices (e.g. – Clutter elimination – Mti
Patent
1990-05-25
1991-04-16
Henry, Jon W.
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
Mti
350622, 350624, 350629, 350630, 342 6, G02B 510, G02B 718, G02B 2700, H01Q 1516
Patent
active
050077210
ABSTRACT:
A mechanical Doppler shifting device for a high frequency radiated beam comprises a rotating helical reflector having its axis of rotation parallel to the beam and a plane stationary mirror mounted parallel to the axis. The helix has a smooth reflective surface which is at a 45 degree slope with respect to the axis so that the distance to the surface from the source of the beam varies with the rotation of the helix. The beam is reflected from the helix to the plane stationary reflector and back upon itself to the source at a Doppler shifted frequency. Also disclosed is a system using 2 helical reflectors, the second being a mirror image of the first and being oppositely rotated synchronously therewith for reflecting the beam to a receiver spaced from the source of the beam.
REFERENCES:
patent: 4264141 (1981-04-01), Guers et al.
patent: 4370654 (1983-01-01), Krutsch
patent: 4418989 (1983-12-01), McCulla et al.
patent: 4606031 (1986-08-01), Beene et al.
patent: 4747664 (1988-05-01), Slaughter
patent: 4830479 (1989-05-01), Lammers et al.
Vernon, D. "High Sensitivity HCN Laser Interferometer For Plasma Electron Density Measurements", Optics Communications, vol. 10, No. 1, Jan. 1974, pp. 95-98.
Manuccia, T. J., "CW IR Laser Induced Chemistry, Isotope Separation and Related Laser Technology at NRL", Laser in Chemistry, pp. 210-215, Elsevier Scientific Publication Company, dated 1977.
Lammers Uve H. W.
Marr Richard A.
Morris John B.
Garfinkle Irwin D.
Henry Jon W.
Singer Donald J.
The United States of America as represented by the Secretary of
LandOfFree
Mechanically rotated Doppler frequency shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mechanically rotated Doppler frequency shifter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanically rotated Doppler frequency shifter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-417261