A waveguide unequal power divider with polarization conversion function

Abstract

The present application discloses a waveguide unequal power divider with polarization conversion function, which includes an input waveguide, a first resonant cavity structure, a second resonant cavity structure, a first output waveguide, a second output waveguide and a third output waveguide; the first resonant cavity structure and the second resonant cavity structure together form an overall resonant cavity structure; the input waveguide is respectively connected to the first resonant cavity structure and the second resonant cavity structure; the first output waveguide is connected to the first resonant cavity structure; the second output waveguide is connected to the second resonant cavity structure; the third output waveguide is respectively connected to the first resonant cavity structure and the second resonant cavity structure. The present application realizes the function of adjusting the polarization direction of the radio frequency signal in the waveguide, and at the same time integrates the waveguide unequal power divider, which has the advantages of simple structure and small size.

Description

Technical Field

[0001] This application relates to the field of millimeter-wave transmission technology, and particularly to a waveguide unequal power divider with polarization conversion function. Background Art

[0002] In recent years, with the rapid development of microwave and millimeter-wave technologies, the functional and performance requirements for millimeter-wave circuits in various application scenarios have become increasingly high. In complex waveguide circuits, it is often necessary to flip the waveguide port by 90 degrees, that is, to flip the electric field polarization direction of the radio frequency signal in the waveguide. Traditional waveguide polarization conversion circuits have disadvantages such as large size, few functions, and complex structure.

[0003] In addition, waveguide unequal power dividers are often required in millimeter-wave waveguide circuits to achieve multi-path transmission of radio frequency signals. Traditional waveguide unequal power dividers have disadvantages such as large size and complex structure. Summary of the Invention

[0004] In view of this, this application provides a waveguide unequal power divider with polarization conversion function. It realizes the function of adjusting the polarization direction of the radio frequency signal in the waveguide, and at the same time integrates a waveguide unequal power divider, which has the advantages of simple structure and small size, and has wide application value in the field of millimeter-wave circuits.

[0005] This application discloses a waveguide unequal power divider with polarization conversion function, which includes an input waveguide, a first resonant cavity structure, a second resonant cavity structure, a first output waveguide, a second output waveguide, and a third output waveguide; the first resonant cavity structure and the second resonant cavity structure together form an overall resonant cavity structure; the input waveguide is respectively connected to the first resonant cavity structure and the second resonant cavity structure; the first output waveguide is connected to the first resonant cavity structure; the second output waveguide is connected to the second resonant cavity structure; the third output waveguide is respectively connected to the first resonant cavity structure and the second resonant cavity structure.

[0006] Furthermore, the transmission directions of the radio frequency signals in the input waveguide are respectively perpendicular to the transmission directions of the radio frequency signals in the first output waveguide, the second output waveguide, and the third output waveguide; the sizes of the first output waveguide, the second output waveguide, and the third output waveguide and their positions relative to the overall resonant structure are adjusted to change the radio frequency signal power output by the first output waveguide, the second output waveguide, and the third output waveguide.

[0007] Further, the radio frequency signal output by the input waveguide resonates in the overall resonator structure formed by the first resonator structure and the second resonator structure, so that the transmission mode of the radio frequency signal in the input waveguide is converted into the transmission mode in the overall resonator structure. At this time, the electric field direction of the radio frequency signal in the overall resonator structure is changed relative to the electric field direction of the radio frequency signal in the input waveguide.

[0008] Further, the third output waveguide is disposed at the center of the overall resonator structure formed by the first resonator structure and the second resonator structure.

[0009] Further, the third output waveguide is at the position where the electric field of the first resonator structure and the second resonator structure is the strongest; most of the energy of the radio frequency signal in the overall resonator structure is output through the third output waveguide.

[0010] Further, the first output waveguide and the second output waveguide are respectively disposed on both sides of the first resonator structure; the input waveguide and the third output waveguide are respectively located on both sides of the overall resonator structure.

[0011] Further, the first output waveguide is at the position where the electric field of the first resonator structure is the strongest; the second output waveguide is at the position where the electric field of the second resonator structure is the strongest; a small part of the energy of the radio frequency signal in the overall resonator structure is output through the first output waveguide and the second output waveguide.

[0012] Further, the input waveguide is disposed at the center of the overall resonator structure formed by the first resonator structure and the second resonator structure, and inputs a radio frequency signal into the first resonator structure and the second resonator structure.

[0013] Further, the first output waveguide, the second output waveguide, and the third output waveguide are used to output the energy of the radio frequency signal in the overall resonator structure. The electric field intensities at the positions where the first output waveguide, the second output waveguide, and the third output waveguide are located are different to achieve unequal power splitting.

[0014] Due to the adoption of the above technical solutions, the present application has the following advantages: The present application can realize the function of changing the electric field polarization direction in a waveguide within a smaller size, and has the advantages of simple structure, small size, high power capacity, etc.; it has the waveguide polarization conversion function and the waveguide unequal power splitting function, and has wide application value in the millimeter-wave circuit field. The function of adjusting the polarization direction of the radio frequency signal in the waveguide is realized. The size and structure of the waveguide polarization conversion circuit are simplified; the waveguide unequal power splitting function is integrated; the structure is simple and the functions are multiple. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments described in the embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of a waveguide unequal power divider with a polarization conversion function according to an embodiment of the present application;

[0017] Reference numerals: 1 is the input waveguide, 2 is the first output waveguide, 3 is the second output waveguide, 4 is the third output waveguide, 5 is the first resonant cavity structure, and 6 is the second resonant cavity structure. Specific embodiments

[0018] The present application will be further described in conjunction with the accompanying drawings and embodiments. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art shall fall within the scope of protection of the embodiments of the present application.

[0019] See Figure 1 , the present application provides an embodiment of a waveguide unequal power divider with a polarization conversion function, which includes an input waveguide 1, a first resonant cavity structure 5, a second resonant cavity structure 6, a first output waveguide 2, a second output waveguide 3, and a third output waveguide 4; the first resonant cavity structure 5 and the second resonant cavity structure 6 together form an overall resonant cavity structure; the input waveguide 1 is respectively connected to the first resonant cavity structure 5 and the second resonant cavity structure 6; the first output waveguide 2 is connected to the first resonant cavity structure 5; the second output waveguide 3 is connected to the second resonant cavity structure 6; the third output waveguide 4 is respectively connected to the first resonant cavity structure 5 and the second resonant cavity structure 6.

[0020] Optionally, the directions of radio frequency signal transmission in the input waveguide 1 are respectively perpendicular to the directions of radio frequency signal transmission in the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4; the dimensions of the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4 and their positions relative to the overall resonant structure are adjusted to change the radio frequency signal power output by the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4.

[0021] Optionally, the radio frequency signal output from the input waveguide 1 resonates in the overall resonator structure formed by the first resonant cavity structure 5 and the second resonant cavity structure 6, so that the transmission mode (TE10 mode) of the radio frequency signal in the input waveguide 1 is converted into the transmission mode in the overall resonator structure. At this time, the direction of the radio frequency signal electric field in the overall resonator structure changes relative to the direction of the radio frequency signal electric field in the input waveguide 1. The TE10 mode is the main mode in a rectangular waveguide and also the mode with the longest cut-off wavelength in the waveguide.

[0022] Optionally, the third output waveguide 4 is disposed at the center of the overall resonator structure formed by the first resonator structure 5 and the second resonator structure 6.

[0023] Optionally, the third output waveguide 4 is at the position where the electric field of the first resonator structure 5 and the second resonator structure 6 is the strongest; most of the energy of the radio frequency signal in the overall resonator structure is output through the third output waveguide 4.

[0024] Optionally, the first output waveguide 2 and the second output waveguide 3 are respectively disposed on both sides of the first resonator structure 5; the input waveguide 1 and the third output waveguide 4 are respectively located on both sides of the overall resonator structure.

[0025] Optionally, the first output waveguide 2 is at the position where the electric field of the first resonator structure 5 is the strongest; the second output waveguide 3 is at the position where the electric field of the second resonator structure 6 is the strongest; a small part of the radio frequency signal energy in the overall resonator structure is output through the first output waveguide 2 and the second output waveguide 3.

[0026] Optionally, the input waveguide 1 is disposed at the center of the overall resonator structure formed by the first resonator structure 5 and the second resonator structure 6, and inputs the radio frequency signal into the first resonator structure 5 and the second resonator structure 6.

[0027] Optionally, the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4 are used to output the radio frequency signal energy in the overall resonator structure, and the electric field intensities at the positions where the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4 are located are different to achieve unequal power splitting.

[0028] The present application provides a waveguide with a simple structure and a polarization conversion function and an integrated waveguide unequal power splitter. By providing three waveguide ports perpendicular to the input waveguide at the overall resonator (the three waveguide ports are respectively connected to the first output waveguide, the second output waveguide, and the third output waveguide), the function of waveguide polarization conversion is realized, and the transmission directions of the radio frequency signals in the first output waveguide, the second output waveguide, and the third output are converted into directions perpendicular to the transmission direction of the radio frequency signal in the input waveguide. By adjusting the sizes and positions of the three output waveguide ports, the radio frequency signal power of the waveguide unequal power splitting is adjusted.

[0029] The principle of this application is as follows: After the radio frequency signal is input from the input waveguide into the overall resonator structure composed of the first resonator structure and the second resonator structure, the radio frequency signal resonates in the overall resonator structure, and its transmission mode and electric field direction have changed. By respectively arranging the first output waveguide, the second output waveguide, and the third output waveguide at the positions with the strongest electric fields of the corresponding resonators, the radio frequency signal energy in the overall resonator structure can be output. Since the electric field intensities at the positions where the first output waveguide, the second output waveguide, and the third output waveguide are located are different, the effect of unequal power division can be achieved. The first output waveguide, the second output waveguide, and the third output waveguide of this application cannot be directly connected to the input waveguide. The reasons are as follows: The waveguide directions of the input waveguide are perpendicular to those of the first output waveguide, the second output waveguide, and the third output waveguide respectively. Therefore, the electric field directions of the radio frequency signals transmitted inside are perpendicular to the electric field directions of the radio frequency signals in the first output waveguide, the second output waveguide, and the third output waveguide respectively, and the radio frequency signals cannot be transmitted with low loss; the shapes of the input waveguide are inconsistent with those of the first output waveguide, the second output waveguide, and the third output waveguide respectively, and it is structurally impossible to directly connect the input waveguide to the first output waveguide, the second output waveguide, and the third output waveguide.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the specific implementation manners of this application or make equivalent replacements. Any modification or equivalent replacement that does not depart from the spirit and scope of this application shall be covered by the protection scope of the claims of this application.

Claims

1. A waveguide unequal power divider with polarization conversion function, characterized in that, It includes an input waveguide, a first resonator structure, a second resonator structure, a first output waveguide, a second output waveguide, and a third output waveguide; the first resonator structure and the second resonator structure together form an overall resonator structure; the input waveguide is respectively connected to the first resonator structure and the second resonator structure; the first output waveguide is connected to the first resonator structure; the second output waveguide is connected to the second resonator structure; the third output waveguide is respectively connected to the first resonator structure and the second resonator structure; the directions of radio frequency signal transmission in the input waveguide are respectively perpendicular to the directions of radio frequency signal transmission in the first output waveguide, the second output waveguide, and the third output waveguide; The radio frequency signal output from the input waveguide resonates in the overall resonator structure formed by the first resonator structure and the second resonator structure, so that the transmission mode of the radio frequency signal in the input waveguide is converted into the transmission mode in the overall resonator structure. At this time, the direction of the radio frequency signal electric field in the overall resonator structure is changed relative to the direction of the radio frequency signal electric field in the input waveguide; the first output waveguide is at the position with the strongest electric field of the first resonator structure; the second output waveguide is at the position with the strongest electric field of the second resonator structure; the third output waveguide is at the position with the strongest electric field of the first resonator structure and the second resonator structure; the first output waveguide, the second output waveguide, and the third output waveguide are used to output the radio frequency signal energy in the overall resonator structure, and the electric field intensities at the positions where the first output waveguide, the second output waveguide, and the third output waveguide are located are different to achieve unequal power splitting.

2. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that, Adjust the dimensions of the first output waveguide, the second output waveguide, and the third output waveguide and their positions relative to the overall resonator structure to change the radio frequency signal power output by the first output waveguide, the second output waveguide, and the third output waveguide.

3. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that, The third output waveguide is arranged at the center of the overall resonator structure formed by the first resonator structure and the second resonator structure.

4. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that, Output the energy of most of the radio frequency signals in the overall resonator structure through the third output waveguide.

5. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that The first output waveguide and the second output waveguide are respectively arranged on both sides of the first resonator structure; the input waveguide and the third output waveguide are respectively located on both sides of the overall resonator structure.

6. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that, Output the energy of a small part of the radio frequency signals in the overall resonator structure through the first output waveguide and the second output waveguide.

7. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that, The input waveguide is arranged at the center of the overall resonator structure formed by the first resonator structure and the second resonator structure, and inputs the radio frequency signal into the first resonator structure and the second resonator structure.

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