Patent ID: 8587315
Filing Date: 2013-11-19
Classification: G01R

Abstract:
1. A magnetic resonance measuring apparatus comprising: a magnetic field generator configured to apply a magnetic field to a test sample; a signal generator configured to generate a microwave signal; a transmitter connected to the signal generator and configured to transmit the signal from the signal generator to the test sample, a receiver opposed to the transmitter and configured to receive the signal from the transmitter via the test sample; wherein d a bandpass filter having a bandwidth BW (MHz), connected to the receiver and configured to extract the signal with a predetermined frequency; and a receiving circuit connected to the bandpass filter, and configured to amplify the extracted signal through the bandpass filter and process the amplified signal based on preset data, wherein the bandwidth (BW) of the bandpass filter satisfies a condition; P+Gtx+Grx−(Γtx+Γd wherein P (dBm) is average power of the microwave signal, Gtx (dBi) is the gain of the transmitter, Grx (dBi) is the gain of the receiver, Γtx (dB) is an attenuation from the signal generator to the transmitter, Γrx (dB) is an attenuation from the transmitter to the receiving circuit, Γd