Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Patent
1995-12-21
1997-07-29
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
327231, 327115, 327117, 377 48, H03D 302
Patent
active
056525346
ABSTRACT:
A phase shifter that employs digital circuitry to achieve arbitrarily fine phase control of reference signals at frequencies extending to the Gigahertz region. The phase shifter includes a cascade of identical phase shift units that provide progressively finer phase control resolution over a full 360 degree range. The phase precision is set by the number of stages used.
REFERENCES:
patent: 4560960 (1985-12-01), Chanrion
patent: 4891774 (1990-01-01), Bradley
patent: 4991187 (1991-02-01), Herold et al.
Hsu Steve I.
Nussbaum Howard S.
Posey William P.
Taylor Stephen D.
Alkov Leonard A.
Callahan Timothy P.
Denson-Low Wanda K.
Hughes Aircraft Company
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