Arrangement to transmit magnetic resonance signals

Details Arrangement to transmit magnetic resonance signals Arrangement to transmit magnetic resonance signals

2009-05-13

2011-11-08

Donovan, Lincoln (Department: 2816)

Telecommunications

Transmitter and receiver at separate stations

Short range rf communication

C455S039000, C455S041300, C455S082000

Reexamination Certificate

active

08055196

ABSTRACT:
An arrangement for transmitting magnetic resonance signals, with a transmission link that connects a local coil with a receiver, has a first channel of the local coil with a first single antenna to acquire a first magnetic resonance signal, as well as a first mixer connected with the first single antenna. The first mixer forms an intermediate-frequency first signal from the supplied first magnetic resonance signal. A second channel of the local coil has a second single antenna to acquire a second magnetic resonance signal, as well as a second mixer connected with the second single antenna. The second mixer forms an intermediate-frequency second signal from the supplied second magnetic resonance signal. The local coil has a device for signal combination that, by frequency multiplexing, that combines the intermediate-frequency first signal of the first channel and the intermediate-frequency second signal of the second channel so that it arrives at the receiver via the transmission path. The receiver has an A/D converter at which one of the transmitted intermediate-frequency signals of an associated channel arrives in order to be sampled with a sampling frequency for digitization. For frequency conversion, a first local oscillator frequency is connected at the first mixer and a second local oscillator frequency is connected at the second mixer. the first and second local oscillator frequencies are selected such that intermediate-frequencies formed by the frequency conversion are mirror-symmetrical relative to the sampling frequency of the A/D converter.

REFERENCES:
patent: 5272437 (1993-12-01), Wardenier
patent: 5319309 (1994-06-01), den Boef et al.
patent: 5572130 (1996-11-01), Ratzel
patent: 2008/0111552 (2008-05-01), Brune et al.
patent: 2009/0115396 (2009-05-01), Allen et al.

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