SU113438A1 - Radio Spectroscopy Input Device - Google Patents

Description

In known radio spectroscopes, a balanced ring bridge is used as an input ycTpoiicTBa, one arm of which is connected to a source of high-frequency oscillations, the second with a resonator, in which the test substance is placed, absorbs load to the third arm, and the fourth attachment to the receiver input. These input devices of radio-optical spectroscopes have the disadvantage that the losses in the walls of the ring bridge, the resonator and the supply waveguides are greater than the energy losses in the test substance, as a result of which the noise generated in the bridge, the waveguide and the resonator is stronger than the useful signals, which reduces the sensitivity radio scopescope.

The proposed input device of the radio spectroscope allows reducing the energy losses in its walls and increasing the sensitivity of the spectroscope.

A feature of the device is that it is made in the form of a system of two cavities with cavities that communicate through an opening in the wall separating them. The shape and size of the orifices are chosen so that, in the absence of an unstable venlostp, legs. A high frequency 1h / 1s and no. 1 cm from the mountain near the aperture, the oscillations of one resonator did not excite the oscillations of the second resonator. This is explained in FIG. . FIG. 2 but the system is shown on two resonators with a wave of Noi; on fng. 3-position in the hole.

The explored sun is located in the image, -ITO; ip: i The curve in it is absorbed (; and | this, the zero between the resonators P: n) is deformed so that the second resonator P; is excited.

Such a device is equivalent in its effect to a balanced bridge, but differs from it in simplicity, less loss of m-, energy: g, s-1 and the possibility of easier adjustment of the balance of the circuit.

FIG. Figure 2 shows a specific embodiment of the proposed input device at two rectangular resonators with a Noi wave.

These resonators are arranged perpendicular to each other in such a way that the field of the first resonator does not excite a similar floor in the second.

The substance is placed in the communication hole in the direction of the bisector to the planes (Fig. 3) of both resonators.

When absorbed in the test substance, the field is deformed and a connection between the resonators appears. The balance adjustment can be carried out either by slightly turning one resonator relative to another, or by introducing an adjustment slit located in the same plane as the substance near the aperture.

Subject invention

An input device of a radio spectroscope, characterized in that, in order to increase the sensitivity of a radio spectroscope, it is made in the form of a system of two resonators with cavities communicating through an opening in their separating wall, the shape and size of which is chosen so that in the absence of an analyte absorbing high-frequency radiation and placed in one of the resonators near the aperture, oscillations of one resonator did not excite oscillations of the second resonator.

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