RU1810982C - Generator - Google Patents

Abstract

The invention relates to microwave electronics and can be used to create radio and radio transmitting devices of the millimeter and submillimeter wavelength ranges. A generator containing an open resonator with a metal mirror 1 and two dielectric semi-disks, at least one of which (for example, under a semi-disk 2), has two rectangular holes 4 and 5 in the mirror 1 with semiconductor diodes 6 and 7 and short-circuit amps 8 and 9. There is a dielectric waveguide 10 for outputting energy. In order to provide a two-frequency regime for generating nearby frequencies, the distance between the midpoints of the half-disks is chosen equal to 1/10 of the wavelength in them. The distance between the edges of the half-discs is adjustable. Energy can be removed using two rectangular metal waveguides 13 and 14, each of which is connected to the resonator through a corresponding communication slot 11 and 12, which provides separate output of two signals of different frequencies on two channels. 1 s.p., f-ly, 4 ill. Joint venture

Description

Fig 4

The invention relates to microwave electronics, in particular to semiconductor generators of microwave oscillations, and can be used in spectroscopy, radar, communications and other fields.

The purpose of the invention is to provide a two-frequency mode for generating nearby frequencies, as well as to separately output signals of different frequencies.

A positive effect in the present invention is achieved due to the fact that the types of azimuthal oscillations are excited at the same frequency f0 at the same frequency f0 in the system of two half-disks at the same distance f. When the half-disks are positioned at an angle to each other and the selected I, an intertype relationship occurs and these vibrations are rearranged, which is manifested as follows. Firstly, the frequency f0 is split into fi and h: secondly, the spot splitting of the fields on the mirror under the half-disks to a spot on the floor with the corresponding frequencies fi and f2, which was discovered for the first time. Running in the mirror under at least one of the half-disks of two rectangular holes with diodes and short-circuits ensures independent generation of one diode at the frequency fi, and the other at the frequency fa, which is impossible in the prototype. Placing and under the second half-disk of holes with diodes and short circuits increases the lasing power at both frequencies f i and f2. The two-frequency signal is either outputted by a dielectric waveguide or separated by two frequency channels.

In FIG. 1 is a schematic illustration of a generator with a dielectric waveguide for outputting energy; in FIG. 2 - the same (section AA in FIG. 1): in FIG. 3 - the same, top view without. dielectric waveguide; in FIG. 4 - the same with the introduced two-channel energy output in the form of two rectangular metal waveguides.

The proposed generator contains an open resonator with a metal mirror 1 and two dielectric half disks 2 and 3. At least under one of them (for example, 1, 2) two rectangular holes 4 and 5 with semiconductor diodes 6 placed in them are made in the mirror 1 and 7 and short circuits 8 and 9. There is a dielectric waveguide 10 for outputting energy electromagnetically coupled to the half disks 2 and 3. The dielectric half disks 2 and 3 are located at an angle p to each other (Fig. 3), the limiting values of which correspond to parallel half claims (but p & 0) and relating to one of their parties, i.e. extreme tilt positions of the half disks to each other. In this case, the distance I between their midpoints is selected from the conditions I Ad / 10, where Ad is the wavelength in the dielectric half disks 2 and 3.

In the generator in each short-circuit switch 8 and 9, slots 11 and 12 can be made, to which the introduced segments of the rectangular waveguide 13 and 14 are connected.

The generator operates as follows.

When the supply voltage is applied to the semiconductor diodes b and 7 in the system of dielectric half disks 2 and 3, located at an angle to each other at a distance I between their midpoints, intertype oscillations are excited, having close

alternating frequencies and split spots

of their fields on the mirror 1, These oscillations are the result of intertype coupling near the coincidence of the frequencies of the even and odd types of azimuthal oscillations of the system of dielectric semi-disks 2 and 3, Diodes 6 and 7 appear in the spots of fields with different nearby resonant frequencies, which determines the generation the first diode on one of these frequencies, and the second on the other. The energy of the dual frequency signal is output by the dielectric waveguide 10.

Making holes with diodes and short-circuits under half-disk 3 increases the generated power by

each frequency.

When performing in each short-circuit breaker 8 and 9 slots 11 and 12, to which

segments of the rectangular waveguide 13 and 14 are connected, a separate

output of signals of different frequencies.

PRI me R. Due to the lack of research on open resonators with a metal mirror and two dielectric half-disks (half-disks) near the points of coincidence of the frequencies of their vibrations, experimental studies of such modes were carried out. The experiments were carried out in

frequency range 27.0-47.0 GHz. Fluoroplast-4 half-disk resonators with a radius of 39 mm and a height of 7.2 mm were used.

When a half-disk system is excited by an external oscillator with frequency sweeping, two networks of resonant frequencies are observed, which correspond to types of azimuthal oscillations even and odd relative to the plane of symmetry between the half-disks. It was experimentally established that when

at the point I Ad / 10 between the half-disks, the coincidence point of the frequencies of the even n-th oscillation and the odd (n-1) th oscillation is realized. The inclination of half-disks at an angle to one another (violation of the parallelism of their bases) leads to an inter-type connection of these vibrations, which is manifested as follows. For example, 4 upon excitation of vibrations ЕН40,1,1 even and ЕНз9,1,1 odd at I Ad / 10 0.5 mm, two resonant peaks with frequencies f 1 40.33 GHz and h 40.39 GHz are observed. Each peak has its own spot on the mirror floor: on the one hand, under one half-disk there is a spot corresponding to ft, under the other - f2, and on the other diametral side - vice versa.

The system described above was used in a mock-up of a generator in which two holes in a mirror with Gunn diodes and short-circuits were located in the field localization fields of one of the half-disks. When a voltage was applied to the diodes through a dielectric waveguide, a two-frequency signal was received with fi 40.33 GHz and fa .40.39 GHz with a power level of several tens of milliwatts. When energy was removed through two metal waveguides through the communication slots, signals were separated by two frequency channels.

The creation of a generator with two half-disks, the choice of their mutual arrangement provide stable two-frequency generation with near-frequency frequencies, which is not possible in the prototype. Moreover, in the proposed generator, it is possible to separate the generated frequencies according to

two channels with the same power level. An important advantage of the proposed generator is the use of a quasi-optical open resonator. which is promising for the short-wave part of the millimeter range. The use of a dielectric waveguide and a resonator allows the generator to be manufactured using hybrid integrated technology methods, which creates the possibility of mass production at a relatively low cost.

Claims (2)

SUMMARY OF THE INVENTION 1. Generator comprising an open resonator, on a metal mirror of which two dielectric half-disks are mounted with rectangular bases, at least one of which has two rectangular holes with diodes and short-circuits placed in them, and a dielectric waveguide energy output, electromagnetically coupled to dielectric half-disks, characterized in that, in order to provide a two-frequency regime for generating near-frequency frequencies, dielectric half disks are located at an angle to one another, and the distance I between their midpoints is selected from the condition I Ad / 10, where Ven is the wavelength in dielectric half disks.  2. Generator pop. 1, characterized in that, in order to separately output signals of different frequencies, a gap is made in each short circuit to which an inserted segment of a rectangular waveguide is connected.