Graduated frequency response non-contacting slip ring probe

A non-contacting rotary joint for transmission of electrical signals across a non-contacting interface defined between two relatively-movable members, comprising:

• a transmitter configured to transmit a signal across a non-contacting interface;
• a near-field probe arranged in spaced relation to said transmitter and operatively arranged to receive said signal transmitted across said interface;
• said near-field probe having a signal capture area for receiving said signal transmitted across said interface;
• said signal capture area comprising a segmented signal receiving strip having a length sized for a desired low frequency signal content of said signal and configured to receive a range of frequency signal content of said signal that includes said desired low frequency signal content of said signal, said segmented signal receiving strip comprising:
• a first signal receiving segment having a first frequency response;
• a second signal receiving segment having a second frequency response and electrically coupled to said first signal receiving segment;
• a third signal receiving segment having a third frequency response and electrically coupled to said first signal receiving segment;
• said second frequency response of said second signal receiving segment being less than said first frequency response of said first signal receiving segment;
• and
• said third frequency response of said third signal receiving segment being less than said first frequency response of said first signal receiving segment;
• and
• receiving electronics operatively arranged to receive said range of frequency signal content received by said segmented signal receiving strip via said first signal receiving segment.