DEVICE FOR DETECTING NUCLEAR QUADRUPOLE RESONANCE SIGNALS Russian patent published in 2021 - IPC G01N24/08 

FIELD: radio engineering.

SUBSTANCE: invention can be used for the transmitting or receiving antenna of an aircraft in the decimeter wavelength range. The essence of the invention consists in the fact that the device for detecting nuclear quadrupole resonance signals contains a pumping frequency generator, a power amplifier and a matching device, a frequency pulse generator, a time pulse generator, a receiving system information generator, a filter block, a block for analyzing the spectrum of nuclear quadrupole resonance of radiation, a block for studying the spectrum of nuclear quadrupole resonance of radiation, at the same time, a multi-frequency common-mode receiving antenna system with the reception of normally and parallel polarized electromagnetic waves, a multi-frequency common-mode transmitting antenna system with the radiation of a normally polarized electromagnetic wave are additionally introduced, while the output of the pumping frequency generator is connected to the input of the power amplifier in parallel through the frequency pulse generator, through the first switch Sw.1, as well as through the time pulse generator, through the second switch Sw. 2; the output of the power amplifier is connected in parallel with the input of the matching device of the transmitting system and through input n₁ to the information generator of the receiving system; n outputs of the matching device of the transmitting system are connected to each of the n emitters in the system 7 through terminal “g”, starting from 7₁ to 7_N; n inputs of the information generator of the receiving system are connected to N common-mode strips 6, for example, n inputs of the information generator are connected to the first common-mode receiving strip from the first antenna 6₁₁ to n 6_1N; the output of the information generator of the receiving system is connected to the block for studying the radiation spectrum of nuclear quadrupole resonance signals through the filter block and through the block for analyzing the radiation spectrum of nuclear quadrupole resonance signals; the radiating part of the device for detecting nuclear quadrupole resonance radiation emitters is placed between two screening planes made in the form of truncated cylindrical planes.

EFFECT: invention provides increased reliability of the analysis of the frequency properties of the field of the objects under study and their levels based on the introduction of antenna devices with a normally polarized wave capable of propagating through the interface of media with minimal power losses.

25 cl, 37 dwg