Patent ID: 6906520

Claim:
A method for communicating a magnetic resonance signal from a magnetic resonance reception antenna to an evaluation device, comprising the steps of: receiving a magnetic resonance signal with a magnetic resonance reception antenna at a magnetic resonance frequency; supplying said magnetic resonance signal from said magnetic resonance reception antenna, without amplification, to a parametric up-converter having non-linear reactance; emitting auxiliary energy from an auxiliary transmission antenna at an auxiliary frequency; receiving a part of said auxiliary energy with an auxiliary reception antenna; supplying a signal representing said auxiliary energy at said auxiliary frequency from said auxiliary reception antenna to said parametric up-converter without amplification; in said parametric up-converter, using said non-linear reactance, to amplify and mix said signal representing said auxiliary energy and said magnetic resonance signal to form a mixed signal having a mixed frequency equal to a sum of said magnetic resonance frequency and said auxiliary frequency; supplying said mixed signal from said parametric up-converter to a mixed signal transmission antenna without amplification between said parametric up-converter and said mixed signal transmitter antenna, and emitting said mixed signal from said mixed signal transmission antenna; and receiving at least a part of said mixed signal with a mixed signal reception antenna and supplying said mixed signal from said mixed signal reception antenna to an evaluation device.