Programmable multi-channel amplitude and phase shifting circuit

Details Programmable multi-channel amplitude and phase shifting circuit Programmable multi-channel amplitude and phase shifting circuit

2004-01-07

2010-06-01

Chin, Vivian (Department: 2614)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

C324S076780, C324S076790, C324S076810, C324S076810, C324S076820, C702S085000, C702S106000, C702S108000, C702S112000

Reexamination Certificate

active

07728576

ABSTRACT:
The traveling wave excitation system phase shifter chassis method and device of the invention is compact, inexpensive, and versatile when compared to customary methods for generating traveling wave excitation signals that would require using an equivalent number of commercial function generators. The method and device of the invention produces up to 56 simultaneous sine waves that are phase shifted with respect to one another.

REFERENCES:
patent: 4663594 (1987-05-01), Perkins
patent: 4737703 (1988-04-01), Hayakawa
patent: 4782246 (1988-11-01), Kuroyanagi et al.
patent: 5317200 (1994-05-01), Nishiyama
patent: 7123724 (2006-10-01), Pfaffinger et al.
patent: 2002/0001317 (2002-01-01), Herring

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