Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1989-06-01
1991-04-02
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
G01R 3320
Patent
active
050049836
ABSTRACT:
The invention relates to a circuit arrangement for generating rf signals for MR examinations, comprising a read-only memory in which a signal is stored in the form of a series of data words, an address generator for reading data words from the read-only memory with a clock frequency, and a digital-to-analog converter which succeeds the read-only memory. In order to reduce the required storage capacity, a sinusoidal signal in the form of a series of data words is stored in the memory.
REFERENCES:
patent: 4054785 (1977-10-01), Lehmann
patent: 4613814 (1986-09-01), Penney
Proksa Roland
Roschmann Peter
van den Berg Noel J. M.
Slobod Jack D.
Tokar Michael J.
U.S. Philips Corporation
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