RU2807588C1 - Wave exciters h11 and e01 - Google Patents

Abstract

FIELD: radio engineering.

SUBSTANCE: in particular, wave exciters. The wave exciter H₁₁ and E₀₁ contains two sections of input rectangular waveguides and a section of a circular waveguide. The exciter contains a double waveguide T-bridge, folded in the E-plane, the side arms of which are connected to the input of a section of a circular waveguide. The longitudinal axes of the rectangular waveguides forming the side arms of the double waveguide T-bridge, folded in the E-plane, are located symmetrically relative to the longitudinal axis of the circular waveguide segment, and the sections of rectangular waveguides forming the H- and E-arms of the double waveguide T-bridge, folded in the E-planes are segments of input rectangular waveguides.

EFFECT: reduction in longitudinal dimensions while maintaining its electrical characteristics.

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Description

The invention relates to radio engineering, namely to elements of a waveguide path, and can be used in waveguide, antenna and microwave measuring equipment.

The closest to the claimed technical solution is the exciter of waves H ₁₁ and E ₀₁ , containing three sections of round waveguides of different cross-sections, to the side walls of which three sections of input rectangular waveguides are docked, while a short-circuiter is installed at the output of the section of the round waveguide of the smallest cross-section (Design of phased array antennas /Under the editorship of D.I. Voskresensky, M.: Radio engineering, 2012, p. 671, Fig. 5.7.15).

The disadvantage of the prototype is the large longitudinal dimensions associated with the location of the sections of rectangular waveguides.

The authors were faced with the task of creating an exciter for waves H ₁₁ and E ₀₁ that would not have this drawback.

The technical result of the proposed exciter of waves H ₁₁ and E ₀₁ - a reduction in longitudinal dimensions while maintaining its electrical characteristics - is achieved due to the fact that a double waveguide T-bridge, folded in the E-plane, is additionally introduced into the exciter of waves H ₁₁ and E ₀₁ the shoulders of which are connected to the input of a section of a circular waveguide, and the longitudinal axes of the rectangular waveguides forming the side arms of a double waveguide T-bridge, folded in the E-plane, are located symmetrically relative to the longitudinal axis of the section of a circular waveguide, and the sections of rectangular waveguides forming the H- and E- the arms of the double waveguide T-bridge, folded in the E-plane, are segments of the input rectangular waveguides.

A section of a rectangular waveguide forming the E-arm of a double waveguide T-bridge, folded in the E-plane, can have a corner bend in the H-plane with a rotation angle of 0°<α≤90°, in which the edge formed by its inner walls, located within a section of a rectangular waveguide forming the H-arm of a double waveguide T-bridge, folded in the E-plane, while the angle between the longitudinal axes of the sections of rectangular waveguides forming the H- and E-arms is 90°-α.

The narrow wall of a segment of a rectangular waveguide forming the E-arm of a double waveguide T-bridge, folded in the E-plane, can coincide with the wide wall of a segment of a rectangular waveguide, forming the H-arm of a double waveguide T-bridge, folded in the E-plane, to which the his side shoulders.

An additional section of a rectangular waveguide can be connected to the side wall of a section of a circular waveguide, the longitudinal axis of which is orthogonal to the longitudinal axis of a section of a rectangular waveguide forming the H-arm of a double waveguide T-bridge, folded in the E-plane, and perpendicular to the longitudinal axis of a section of a circular waveguide, parallel to which the wide walls of the additional section of the rectangular waveguide are located, and the distance between the longitudinal axis of the additional section of the rectangular waveguide and the input of the section of the circular waveguide to which the rectangular waveguides are connected, forming the side arms of the double waveguide T-bridge, folded in the E-plane, is Where - wavelength in a section of a circular waveguide.

A short-circuited section of a rectangular waveguide can be connected to the side wall of a section of a circular waveguide, the longitudinal axis of which coincides with the longitudinal axis of an additional section of a rectangular waveguide, and the wide walls of a short-circuited section of a rectangular waveguide are parallel to the wide walls of an additional section of a rectangular waveguide.

The ribs of a double waveguide T-bridge folded in the E-plane and a short-circuited section of a rectangular waveguide can be radially mated.

The claimed exciter of waves H ₁₁ and E ₀₁ has a set of existing features that are not known from the prior art for products of a similar purpose, which allows us to conclude that it meets the “novelty” criterion for the invention.

The claimed exciter of waves H ₁₁ and E ₀₁ , in the opinion of the applicant and the authors, meets the criterion of “inventive step”, because for specialists, it does not explicitly follow from the prior art, i.e. not known from available sources of scientific, technical and patent information on the filing date of the application.

The essence of the proposed solution is illustrated with the help of drawings,

Where:

- figure 1 shows an embodiment of the exciter of waves H ₁₁ and E ₀₁ , containing a double waveguide T-bridge folded in the E-plane, the side arms of which are connected to the input of a section of a round waveguide;

- figure 2 shows an embodiment of the exciter of waves H ₁₁ and E ₀₁ , in which an angular bend in the H-plane with a rotation angle α = 90 is introduced into a section of a rectangular waveguide forming the E-arm of a double waveguide tee, folded in the E-plane °, and an additional section of a rectangular waveguide and a short-circuited section of a rectangular waveguide are connected to the side wall of a section of a circular waveguide;

- Figure 3 shows view A of Figure 2.

The exciter of waves H ₁₁ and E ₀₁ consists of two sections of input rectangular waveguides, forming the H-arm 1 and E-arm 2 of the double waveguide T-bridge 3, folded in the E-plane, the side arms 4 of which are connected to the input of the section of round waveguide 5, Moreover, the longitudinal axes of the rectangular waveguides forming the side arms 4 of the double waveguide T-bridge 3, folded in the E-plane, are located symmetrically relative to the longitudinal axis of the segment of the circular waveguide 5.

An additional section of a rectangular waveguide 6 and a short-circuited section of a rectangular waveguide 7 can be connected to the side wall of a section of a circular waveguide 5, the longitudinal axes of which are aligned, orthogonal to the longitudinal axis of a section of a rectangular waveguide forming the H-arm 1, and perpendicular to the longitudinal axis of a section of a circular waveguide 5, parallel in which the wide walls of the additional section of the rectangular waveguide 6 and the short-circuited section of the rectangular waveguide 7 are located, while the distance between the longitudinal axis of the additional section of the rectangular waveguide 6 and the input of the section of the circular waveguide 5, to which the rectangular waveguides are connected, forming the side arms 4 of the double waveguide T-bridge 3 , folded in the E-plane, is 0.75λ _in , where λ _in is the wavelength in a section of circular waveguide 5.

To further reduce the longitudinal dimensions of the exciter of waves H ₁₁ and E ₀₁ , an angular bend in the H-plane 8 with a rotation angle α= 90°, while the angle between the longitudinal axes of the sections of rectangular waveguides forming the H-arm 1 and E-arm 2 is equal to 0°, and the narrow wall of the section of the rectangular waveguide forming the E-arm 2 coincides with the wide wall of the section of the rectangular waveguide forming H-arm 1, to which the side arms 4 of the double waveguide T-bridge 3, folded in the E-plane, are attached.

The device works as follows:

The microwave signal arriving at the input of a section of a rectangular waveguide, forming the H-arm 1 of a double waveguide T-bridge 3, folded in the E-plane, passes through it and is divided between the side arms 4 into two antiphase signals of the same amplitude. Next, the microwave signal arrives at the input of a section of circular waveguide 5, exciting wave E ₀₁ .

The microwave signal arriving at the input of a section of a rectangular waveguide forming the E-arm 2 of the double waveguide T-bridge 3, folded in the E-plane, passes through it and is divided between the side arms 4 of the double waveguide T-bridge 3, folded in the E-plane , two in-phase signals of the same amplitude, arrives at the input of a section of circular waveguide 5, exciting wave H ₁₁ .

In the case of introducing a corner bend in the H-plane 8, the microwave signal arriving at the input of a section of a rectangular waveguide forming the E-arm 2 of a double waveguide T-bridge 3, folded in the E-plane, passes to the input of the corner bend in the H-plane 8 s rotation angle α=90°, where its direction of propagation changes. Then the microwave signal is divided between the side arms 4 of the double waveguide T-bridge 3, folded in the E-plane, into two in-phase signals of the same amplitude, and arrives at the input of a segment of the circular waveguide 5, exciting the H wave ₁₁ .

The microwave signal arriving at the input of the additional section of the rectangular waveguide 6 excites wave H ₁₁ in the section of the circular waveguide 5, which is orthogonal to the wave H ₁₁ excited when the microwave signal arrives at the input of the section of the rectangular waveguide, forming the E-arm 2 of the double waveguide T- bridge 3, folded in the E-plane.

The inputs of the sections of rectangular waveguides forming the H-arm 1 and E-arm 2 of the double waveguide T-bridge 3, folded in the E-plane, and the input of the additional section of the rectangular waveguide 6 are decoupled.

When manufacturing the exciter of waves H ₁₁ and E ₀₁ , for example, by the milling method, it is possible to simultaneously manufacture a double waveguide T-bridge 3, folded in the E-plane, as well as a short-circuited section of a rectangular waveguide 7, while during the manufacturing process radial mates of the ribs of the side arms arise 4 double waveguide T-bridge 3, folded in the E-plane, a short-circuited section of a rectangular waveguide 7 and a corner bend in the H-plane 8.

To confirm the correctness of the chosen technical solution, the company manufactured a number of samples of H ₁₁ and E ₀₁ wave exciters, in which, in the operating frequency band of at least 10%, the VSWR does not exceed 1.10.

Based on the tests performed, it can be concluded that the exciter of waves N ₁₁ and E ₀₁ in its electrical characteristics is not inferior to its analogues, but at the same time has an advantage in design and technological design, which confirms the absence of a drawback of the prototype and the compliance of the proposed solution with the criterion of “industrial applicability” for inventions.

Claims (6)

1. The exciter of waves H ₁₁ and E ₀₁ , containing two sections of input rectangular waveguides and a section of a round waveguide, characterized in that a double waveguide T-bridge, folded in the E-plane, is additionally introduced into it, the side arms of which are connected to the input of the section of a round waveguide , and the longitudinal axes of the rectangular waveguides forming the side arms of the double waveguide T-bridge, folded in the E-plane, are located symmetrically relative to the longitudinal axis of the circular waveguide segment, and the sections of rectangular waveguides forming the H- and E-arms of the double waveguide T-bridge, folded in the E-plane, are segments of input rectangular waveguides. 2. The exciter of waves H ₁₁ and E ₀₁ according to claim 1, characterized in that an angular bend in the H-plane with a rotation angle of 0 is introduced into the section of the rectangular waveguide forming the E-arm of the double waveguide T-bridge, folded in the E-plane °<α≤90°, in which the edge formed by its internal walls is located within a section of a rectangular waveguide forming the H-arm of a double waveguide T-bridge, folded in the E-plane, while the angle between the longitudinal axes of the sections of rectangular waveguides forming H- and E-arms are equal to 90°-α. 3. The exciter of waves H ₁₁ and E ₀₁ according to claim 2, characterized in that the narrow wall of a section of a rectangular waveguide forming the E-arm of a double waveguide T-bridge, folded in the E-plane, coincides with the wide wall of a section of a rectangular waveguide forming H -arm of a double waveguide T-bridge, folded in the E-plane, to which its side arms are docked. 4. The exciter of waves H ₁₁ and E ₀₁ according to claim 1, characterized in that an additional section of a rectangular waveguide is connected to the side wall of a section of a circular waveguide, the longitudinal axis of which is orthogonal to the longitudinal axis of a section of a rectangular waveguide forming the H-arm of a double waveguide T-bridge, folded in the E-plane, and perpendicular to the longitudinal axis of the circular waveguide segment, parallel to which the wide walls of the additional rectangular waveguide segment are located, while the distance between the longitudinal axis of the additional rectangular waveguide segment and the input of the circular waveguide segment to which the rectangular waveguides are connected, forming the side arms of the double waveguide T-bridge, folded in the E-plane, is (0.6÷0.9)λ _in , where λ _in is the wavelength in a section of a circular waveguide. 5. The exciter of waves H ₁₁ and E ₀₁ according to claim 4, characterized in that a short-circuited section of a rectangular waveguide is connected to the side wall of a section of a circular waveguide, the longitudinal axis of which coincides with the longitudinal axis of an additional section of a rectangular waveguide, and the wide walls of a short-circuited section of a rectangular waveguide are parallel wide walls of an additional section of a rectangular waveguide. 6. The exciter of waves H ₁₁ and E ₀₁ according to claim 5, characterized in that the ribs of the double waveguide T-bridge, folded in the E-plane, and the short-circuited section of the rectangular waveguide have a radial conjugation.

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