Patent ID: 9575147
Date: 2017-02-21
CPC Classifications: G01N,G01R

Claim:
1. A nuclear quadrupole resonance (NQR) sensor assembly comprising: an active sensor coil configured to transmit radiofrequency (RF) signals to an object of interest and receive return RF signals from the object of interest to generate sensor signals substantially representative of the return signals, said active sensor coil extending in a length-wise dimension and a height-wise dimension orthogonal to the length-wise dimension; and at least one reference coil extending in the length-wise dimension and the height-wise dimension and separated from said active sensor coil in a depth-wise dimension orthogonal to the length-wise and height-wise dimensions, said at least one reference coil thereby decoupled from said active sensor coil, said at least one reference coil configured to receive environmental RF signals to generate reference signals at least partially representative of the environmental RF signals, wherein the reference signals are used to reduce interference components within the return signals.