Q-damping circuit including a diode acting as a resistor for damping a high temperature superconductor self-resonant coil in a nuclear quadrupole resonance detection system
First Claim
1. A nuclear quadrupole resonance detection system, comprising a high temperature superconductor self-resonant transmit and receive coil and a Q-damping circuit for the transmit and receive coil, wherein the Q-damping circuit comprises a diode operated with a forward bias such that the diode has a resistance of about 10 to about 1000 ohms and is able to provide all needed Q-damping circuit resistance.
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Accused Products
Abstract
The use of a bias controlled diode in the Q-damping circuit of a high temperature superconductor transmit, receive, or transmit and receive self-resonant coil in a nuclear quadrupole resonance detection system results in improved performance. The diode is operated with a forward bias such that the diode is resistive with a resistance of about 10 to about 1000 ohms.
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Citations
28 Claims
- 1. A nuclear quadrupole resonance detection system, comprising a high temperature superconductor self-resonant transmit and receive coil and a Q-damping circuit for the transmit and receive coil, wherein the Q-damping circuit comprises a diode operated with a forward bias such that the diode has a resistance of about 10 to about 1000 ohms and is able to provide all needed Q-damping circuit resistance.
- 10. A nuclear quadrupole resonance detection system, comprising a high temperature superconductor self-resonant transmit coil and a Q-damping circuit tot the transmit coil, wherein the Q-damping circuit comprises a diode operated with a forward bias such that the diode has a resistance of about 10 to about 1000 ohms and is able to provide all needed Q-damping in circuit resistance.
- 19. A nuclear quadrupole resonance detection system, comprising a high temperature superconductor self-resonant receive coil and a Q-damping circuit for the receive coil, wherein the Q-damping circuit comprises a diode operated with a forward bias such that the diode has a resistance of about 10 to about 1000 ohms and is able to provide all needed Q-damping circuit resistance.
Specification