Resonator for non-sinusoidal signal

 

(57) Abstract:

Usage: the invention relates to microwave electronics, the device cavity klystrons, and can be applied to the creation of an amplifier and generator devices klystrons type. The inventive introduction of two flat edges can be moved parallel to the covers, with the plane of one edge is perpendicular to the plane of the side covers of the resonator, and the plane of the other edge parallel to, and one of the ribs may be made as part of the ring to extend the tuning range of the fundamental frequency, to facilitate tuning of the resonator at multiple operating frequencies. 2 C.p. f-crystals, 4 Il.

The invention relates to microwave electronics, and particularly to a device cavity klystrons, and can be used to create an amplifier and generator devices of this type. The proposed solution is an improvement over prior devices [1]

Known resonator for non-sinusoidal periodic signal includes a housing and placed inside a sleeve mounted on the rod, the dimensions of which are selected from the following relations:

d 1-0,83 arctan-2rl
rlthe outer radius of the sleeve;

l is the length of the sleeve;

d the diameter of the rod;

sinf.FRthe wavelength of the in-phase and antiphase oscillations, respectively, i.e., the size duhsasana resonator are selected by well-defined ratios. This allows to excite the resonator on the opposite phase as the oscillation wavelength which is twice the wavelength of the in-phase species.

The disadvantage of this design is the absence of elements adjust both the primary and the doubled frequency. Tuning of the resonator is obtained only at the expense of strict compliance with the specified geometry. Any deviations from the dimensions in the manufacture of resonators do not allow you to receive multiple frequencies and there is no possibility to compensate the deviation of the frequencies. In addition, the frequency change during operation of the resonator is also not adjusted.

The aim of the invention is to simplify the configuration of the resonator at multiples of the resonant frequency.

The aim is achieved in that the resonator for non-sinusoidal periodic signal containing placed inside a sleeve mounted on the rod, the dimensions of which are selected from the following relations:

d 1-0,83 arctan-2rl
rlthe outer radius of the sleeve;

l is the length of the sleeve;

d the diameter of the rod;

FR,sinfwavelength antiphase and in-phase oscillations, respectively, provided with two flat edges mounted for movement parallel to the covers, with the plane of one edge is parallel to the plane of the side covers of the resonator, and the plane of the other ribs are perpendicular. In addition, to extend the tuning range of the fundamental frequency of one of the ribs made as part of the ring.

The resonator is characterized by the fact that it introduced two flat edges can be moved parallel to the covers, with the plane of one edge is parallel to the plane of the side covers of the resonator, and the plane of the other ribs are perpendicular. To extend the tuning range of the fundamental frequency of one of the ribs is made in the form of the rings. Thus, the claimed dvojnasobny the resonator corresponds to the criterion "novelty".

A comparison of the proposed technical solutions with known has allowed to establish that the set of distinctive features provides duhsasana the resonator according to the criterion of "significant differences".

The resonator is a volume formed by the housing 1 and the side covers 2 with holes 3 for the passage of electrons and is located inside the housing 1 on the rod 4 bushing 5. In case 1 the input elements to the adjustment made in the form of flat ribs 6, 7 that are parallel and perpendicular to the lid of the resonator 2.

When passing through the holes 3 of the housing 1 of the resonator of the electron flow in the cavity is excited in opposite phase with the appearance of oscillations (fundamental) frequency, which is determined by the distributed capacitance in the high frequency gaps located between the sleeve 5 and the cover 2, and the inductance of the rod 4. In addition to the anti-phase type oscillations in the resonator there is a common mode type of oscillations, the frequency of which is determined in a first approximation, the inner diameter of the cylinder. The diameter of the cylinder is chosen so that D oscillation) is selected by changing the diameter of the rod 4 or the surface area of the sleeve 5. For independent tuning of the resonator to the frequency of the main types of vibrations and oscillations of the doubled frequency is entered into the body of the resonator elements of the adjustment made in the form of two flat thin ribs 6, 7 are arranged respectively parallel and perpendicular to the lid of the resonator 2. Such design elements adjustment allows for a small change of electrodynamic parameters of the resonator Q, smoothly in a wide range independently to rebuild the frequency of the main types of vibrations and oscillations of the doubled frequency. Independence of action items adjustment because, as you know, the conductive thin plane spaced relation to the electromagnetic field of the wave so that the electric lines of force are normal to their surface, and the magnetic lines of force on a tangent, does not disturb the field of this wave. Therefore, if you have a flat element adjustment so that it individually resented the fields of the main form of vibrations, thereby reconstructing its frequency, with virtually no impact on the field fluctuations doubled frequency, you will get selective fine-tuning of the fundamental frequency.

You can do something similar with fields of coleny, that allows you to place elements adjust the volume so that they acted as independently.

For experimental verification of the action items adjustment was selected dvojnasobny cylindrical resonator volume 53 x 26 mm with a Central sleeve 10 x 7 x 10 mm, fixed on the rod diameter 5 mm Cover resonator had a span of pipe 18 x 6.5 x 5 mm were Experimentally removed according to changes of the resonant frequency in-phase and antiphase types of oscillations depending on the depth of immersion in the amount of the adjustment elements. In Fig.3 shows that the edge is located perpendicular to the lid of the resonator, very good shifts the frequency of the antiphase types of fluctuations (more than 300 MHz), practically without affecting the frequency-phase species fluctuations. In Fig.4 shows the change associated with moving in the amount of flat ribs located parallel to the lid of the resonator. Well you can see that the change of frequency of the antiphase types of vibrations more than 250 MHz frequency common mode type oscillations practically unchanged. In the resonator characteristic resistance to anti-phase species fluctuations amounted to 250-300 Ohm, common mode type oscillations 150-170 Ohms. When I work the trimmer element antiphase type of oscillation form selected in order to maximize the capacity of the edges of the element alignment on the Central hub of the resonator. The use of tuning elements in the form of flat edges that are parallel and perpendicular to the lid of the resonator, effectively and independently to rebuild the frequency of the main types of vibrations and oscillations of the doubled frequency in a wide range, which, in turn, extends the functionality of the devices on the basis of such resonators without complication.

1. RESONATOR FOR non-sinusoidal SIGNAL, is made with possibility of simultaneous excitation of multiple frequency antiphase and in-phase oscillations, comprising a housing and placed in it the sleeve, which is mounted on the rod and forms together with end caps dual bessmay gap, characterized in that the body cavity is entered with the possibility of radial movement two flat edges that are perpendicular to each other, with the plane of the ribs, designed for frequency antiphase type of oscillation is parallel to the end caps, and the plane of the ribs to rebuild phase type of oscillation is perpendicular to torcicollo, which covers the sleeve.

3. The resonator on the PP.1 and 2, characterized in that the thickness t of edges is determined from the condition

tm< t< 0,05 ,

where the wavelength of the relevant type oscillations, tunable other edge, m;

tmminimum thickness determined by the resistance of the ribs to mechanical and thermal loads, m

 

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