Signal path for a small signal occurring in a magnetic resonance system

摘要

A signal path for a small signal oscillating at a frequency of at least 20 GHz occurring in a magnetic resonance system has a signal source generating the small signal and a signal sink processing the small signal. The small signal is transmitted on a path from the signal source to the signal sink at least in a part section via a cable. The part section of the signal path, in which the small signal is transmitted via the cable, is embodied at least partly as a dielectric waveguide. The dielectric waveguide is disposed at least partly within an examination volume of the magnetic resonance system. The dielectric waveguide is delimited on a source side by a source-side mode converter and on a sink side, by a sink-side mode converter. The small signal is supplied to the source-side mode converter via a source-side electrical conductor and injected by the sink-side mode converter into a sink-side electrical conductor.

主权项

1. A signal path for a small signal oscillating at a frequency of at least 20 GHz occurring in a magnetic resonance system, the signal path comprising:
a signal source operable to generate the small signal and a signal sink operable to process the small signal, the small signal, on a path from the signal source to the signal sink, being transmittable at least in a part section via a cable, wherein the part section is configured at least partly as a dielectric waveguide, the dielectric waveguide being disposed at least partly within an examination volume of the magnetic resonance system and being delimited on a source side by a source-side mode converter and on a sink side, by a sink-side mode converter, wherein the small signal is suppliable to the source-side mode converter via a source-side electrical conductor, and wherein the small signal is injectable by the sink-side mode converter into a sink-side electrical conductor.