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Nuclear magnetic resonance transmitter and receiver system

  • US 4,691,164 A
  • Filed: 08/29/1986
  • Issued: 09/01/1987
  • Est. Priority Date: 08/30/1985
  • Status: Expired due to Fees
First Claim
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1. A tuning circuit for a nuclear magnetic resonance transmitter and receiver system for sensing and coupling an NMR signal to a preamplifier comprising:

  • a pick-up coil,a first capacitive element (18) connected in parallel with said pick-up coil, the capacitance of which is associated with a shielded connection means for transferring the NMR signal detected at said pick-up coil to said preamplifier, anda second capacitive element (20) connected to said coil for forming a resonant circuit in combination with said pick-up coil,wherein the respective values of said capacitive elements are such that the following condition applies
    
    
    space="preserve" listing-type="equation">1/C1+1/Ct= constantwhere Ct is the total capacitance of the first capacitive element and the stray capacitance of the connection means and C1 is the capacitance of said second capacitive element.

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