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AssigneeBruker BioSpin GmbH
InventorsMichel Weiss, Jean-Max Tyburn, Christian Brevard, Laurent Martinache
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A device for generating a radio frequency electrical signals, delivering at least two separate signals having different frequencies, in the form of signals delivered by different primary sources and amplified with a predetermined gain. The device comprises a combining circuit (3), combining the signals delivered by the primary sources (2), a single channel power amplifier (4) and a multi-channel selection and routing unit (5) with a parallel structure. Each channel delivers at the output an amplified signal (S) at a frequency (F) characteristic of one of the primary sources (2) and comprises a filter circuit (6) adjusted to be passing for one of the different characteristic frequencies (F) of the different primary sources (2), an impedance adaptation circuit (7) and a rejection circuit (8) for frequencies other than the passing frequency of the filter circuit (6) of the channel in question.
A generator device for generating radio frequency electric signals, delivering at least two separate signals having different frequencies in the form of signals delivered by different primary sources and amplified with a predetermined gain, characterized in that it comprises, in addition to said primary sources (2), on the one hand, a combining circuit (3), combining, without intermodulation, the signal or signals delivered by the primary sources (2), on the other hand, by a single channel wideband power amplifier (4) having a pass band adapted to the different frequencies (F) of the signals present in the combined signal from the combining circuit (3) and, finally, by a multi-channel selection and routing unit (5) with parallel structure, of which each channel delivers at the output an amplified signal (S) at a frequency (F) characteristic of the one of the primary sources (2) and comprises a filter circuit (6) adjusted to be passing for one of the different characteristic frequencies (F) of the different primary sources (2), an impedance adaptation circuit (7) and a rejection circuit (8) for frequencies other than the passing frequency of the filter circuit (6) of the selected channel.
A process for the production of radio frequency electrical signals having different frequencies, with a single generating device (1), said signals being modulated or not, characterized in that said process consists in supplying several signals having different frequencies (F) by means of several primary sources (2), in carrying out, as the case may be, a modulation of these different signals, in combining, without intermodulation, said signals (s), if desired combined or mixed, by means of a combining circuit (3), in amplifying the combined signal by means of a wideband power amplifier (4) and if desired with variable gain and, finally, in applying the amplified combined signal to the common input (E) of a multi-channel selection and routing unit (5) with a parallel structure, of which each channel comprises a filter circuit (6) adjusted to be passing for one of the different characteristic frequencies (F) of the primary sources (2), an impedance adaptation circuit (7) and a rejection circuit (8) for frequencies other than the passing frequency of the filter circuit (6) of the selected channel, and, finally, in delivering at the level of each output of each of the different channels of said unit (5), an amplified signal (S) having a frequency (F) characteristic of one of the primary sources (2).
Dependencies are inferred from the claim text.