Rotating Doppler Frequency Shifter.
Patent, Filed 24 May 88, patented 16 May 89,
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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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
- Machinery and Tools