DETECTOR OF PULSE RADIO SPECTROMETER Russian patent published in 2003 - IPC

FIELD: radio spectrometry. SUBSTANCE: invention can be used in pulse spectrometers of nuclear magnetic and quadrupole resonance, nuclear magnetic resonance introscopes for isolation of legitimate signal. Detector of pulse radio spectrometer has parallel oscillatory circuit incorporating capacitor 1 and inductance coil 2, four diodes 4, 6, 8, 10. Parallel oscillatory circuit is connected to common bus and is inductively coupled to damping inductance coil 3. Middle point of inductance coil 3 is connected through first diode 4 to capacitor 5 and power supply source connected in parallel. Other leads of capacitor 5 and power supply source are connected to common bus. First and second leads of inductance coil 3 are tied up together and connected to cathode of diode 10 and key with controlling input coupled to common bus through diode 6 and resistor 7, diode 8 and resistor 9 connected in series correspondingly. Anode of diode 10 is connected thorough resistor 11 to power supply source. Commutation current flowing through damping inductance coil 3 is divided in two currents which flow through in opposite directions mutually compensating one another which compensates for commutation noise. Absence of this noise and diminished time of transit process make it possible to begin reception of legitimate signal earlier which leads to improved signal-to-noise ratio and enhanced sensitivity of detector. EFFECT: improved signal-to-noise ratio and enhanced sensitivity of detector. 1 dwg