Patent ID: 8463557
Filing Date: 2013-06-11
Classification: G01R,G01V

Abstract:
1. In a system using a signal generator for injecting energy corresponding to a spectral line of a target molecule in which the stimulated emission response from any target molecules at a given location is detected utilizing a network analyzer to derive a ratio between the injected energy and the stimulated emission response energy in terms of an S21 output signal, a method for the detection and identification of target molecules utilizing nuclear quadrupole resonance, comprising the steps of: calibrating the system by detecting the S21 output signal from the network analyzer in the absence of a target molecule at the location, thus to provide a reference data response; performing a linear regression on the reference data response; injecting the energy corresponding to a spectral line of the target molecule using an untuned balanced terminated zero Q parallel conductor transmission line at the location to ascertain if any target molecules exist at the location; utilizing the network analyzer to detect the stimulated emission response from a target molecule that exists at the location as a result of the injection of the energy; performing a linear regression on the S21 output signal from the network analyzer containing a stimulated emission response; and, subtracting the linear regression of the stimulated emission response from the linear regression of the reference to provide a decluttered spectral line.