Accession Number : ADD014279

Title :   Rotating Doppler Frequency Shifter.

Descriptive Note : Patent, Filed 24 May 88, patented 16 May 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Lammers, Uve H ; Marr, Richard A

Report Date : 16 May 1989

Pagination or Media Count : 6

Abstract : A rotating Doppler Frequency shifter comprises spiral members which surrounded a first mirror affixed to a rotating shaft, and a second mirror affixed to an arm which extends from the shaft and rotates therewith. Each spiral member has a reflective inner surface which is shaped such as to reflect a signal impinging thereon back along its entry path. This arrangement provides for a continuous Doppler frequency shifting of the input signal. Patents. (RRH)

Descriptors :   *DOPPLER EFFECT, *FREQUENCY SHIFT, *MIRRORS, *PATENTS, *REFLECTION, *ROTATION, *SHAFTS(MACHINE ELEMENTS), *SIGNALS, FREQUENCY, INPUT, INTERNAL, SHIFTING, SURFACES

Subject Categories : Optics
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE