Transmissive doppler frequency shifter

Details Transmissive doppler frequency shifter Transmissive doppler frequency shifter

1991-12-10

1993-11-23

Hajec, Donald T.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

359223, 359226, 359858, G11B 1512

Patent

active

052649717

ABSTRACT:
The disclosed system comprises: 1) a transmissive frequency shifter based on reflection from rotating flat surfaces and from stationary involute surfaces; 2) system to compensate for effects of rotation rate instabilities and certain imperfections in the frequency shifter's reflection geometry, and a system to multiply the frequency shift obtainable by an integer number n through an n-fold re-use of stationary reflecting surfaces.

REFERENCES:
patent: 4264141 (1981-04-01), Guers et al.
patent: 4418989 (1983-12-01), McCulla et al.
patent: 4830479 (1989-05-01), Lammers
patent: 5007721 (1991-04-01), Morris et al.

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