Device for non-contact transmission of electrical signals and/or energy

An apparatus for non-contact transmission of electrical energy between a first movable part and a second stationary part comprising:

• at least two electromagnetic coupler elements provided on one of the two parts;
• each coupler element having a resonance system;
• said at least two electromagnetic coupler elements forming a conductor structure comprising a cascade circuit, which is terminated such that signal reflections are substantially eliminated;
• wherein each resonance system comprises a single element which resonates independent of the other resonance system at a resonant frequency that is higher than a highest frequency of the transmitted electrical energy.

Device for non-contact transmission of electrical signals or energy between at least two parts mobile relative to each other, comprising:

• a plurality of defined electromagnetic coupler elements provided on the at least two parts between which signals or energy is to be communicated, with a near field of the coupler elements causing the non-contact transmission;
• each coupler element provided on at least one part comprises at least one resonator including a single element which is able to resonate per se and independently of the other coupler elements, and which has a resonance frequency approximately equal to the frequency of the signals or energy to be transmitted, and
• the individual resonators are connected to each other via a line which is terminated in a manner free from reflection;
• wherein an analyser means is provided which determines the operating frequency of the system and derives therefrom a signal in correspondence with the size of the spacing of said parts adapted to be moved relative to each other.

An apparatus for non-contact transmission of electrical energy between a movable part and a stationary part comprising:

• at least two coupler elements provided on one of the two parts;
• each coupler element having a resonator;
• a line coupling each of said resonators to each other, said line being terminated such that signal reflections are substantially eliminated;
• an electrical energy source where at least one of the two parts comprises a conductor structure having a symmetrical configuration with a first and a second line coupled to the electrical energy source;
• wherein each resonator comprises a single element which resonates independent of the other resonators at a resonant frequency that is approximately equal to a frequency of the transmitted electrical energy;
• and
• wherein the first and second lines supply electrical energy to at least a first coupler element and to at least a second coupler element, the electrical energy comprising differential signals.

Device for non-contact transmission of electrical signals or energy between at least two parts mobile relative to each other, comprising:

• a plurality of defined electromagnetic coupler elements provided on the at least two parts between which signals or energy is to be communicated, with a near field of the coupler elements causing the non-contact transmission;
• each coupler element provided on at least one part comprises at least one resonator including a single element which is able to resonate per se and independently of the other coupler elements, and which has a resonance frequency approximately equal to the frequency of the signals or energy to be transmitted, and
• the individual resonators are connected to each other via a line which is terminated in a manner free from reflection;
• wherein said coupler elements are configured as differential coupler elements and a differential signal is applied to said coupler elements.