Waveguide unequal power divider with polarization conversion function

Abstract

The invention discloses a waveguide unequal power divider with a polarization conversion function. The waveguide unequal power divider comprises 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 jointly form an integral resonant cavity structure; the input waveguide is respectively connected with the first resonant cavity structure and the second resonant cavity structure; the first output waveguide is connected with the first resonant cavity structure; the second output waveguide is connected with the second resonant cavity structure; the third output waveguide is connected with the first resonant cavity structure and the second resonant cavity structure. The function of adjusting the polarization direction of the radio frequency signal in the waveguide is achieved, meanwhile, the waveguide unequal power divider is integrated, and the antenna has the advantages of being simple in structure, small in size and the like.

Description

Technical Field

[0001] The present application relates to the field of millimeter wave transmission technology, and in particular to a waveguide unequal power divider with a polarization conversion function. Background Art

[0002] In recent years, with the rapid development of microwave and millimeter wave technology, various application scenarios have higher and higher requirements for the functions and performance of millimeter wave circuits. In complex waveguide circuits, it is often necessary to flip the waveguide port 90 degrees, that is, to flip the electric field polarization direction of the RF signal in the waveguide. Traditional waveguide polarization conversion circuits have the disadvantages of large size, few functions, and complex structure.

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

[0004] In view of this, the present application provides a waveguide unequal power divider with polarization conversion function. The function of adjusting the polarization direction of the RF signal in the waveguide is realized, and the waveguide unequal power divider is integrated at the same time, which has the advantages of simple structure and small size, and has wide application value in the field of millimeter wave circuits.

[0005] The present application discloses a waveguide unequal power divider with a polarization conversion function, which comprises 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 constitute 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 direction of transmission of the RF signal in the input waveguide is perpendicular to the transmission directions of the RF signals in the first output waveguide, the second output waveguide, and the third output waveguide, respectively; 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 RF signal powers output by the first output waveguide, the second output waveguide, and the third output waveguide.

[0007] Furthermore, the RF signal output by the input waveguide resonates in the overall resonator structure formed by the first resonant cavity structure and the second resonant cavity structure, so that the transmission mode of the RF 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 RF signal in the overall resonator structure changes relative to the electric field direction of the RF signal in the input waveguide.

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

[0009] Furthermore, the third output waveguide is located at the location where the electric field of the first resonant cavity structure and the second resonant cavity structure is the strongest; and most of the energy of the radio frequency signal in the overall resonant cavity structure is output through the third output waveguide.

[0010] Furthermore, the first output waveguide and the second output waveguide are respectively arranged on two sides of the first resonant cavity structure; the input waveguide and the third output waveguide are respectively located on two sides of the overall resonant cavity structure.

[0011] Furthermore, the first output waveguide is located at the strongest electric field of the first resonant cavity structure; the second output waveguide is located at the strongest electric field of the second resonant cavity structure; and a small portion of the RF signal energy in the overall resonant cavity structure is output through the first output waveguide and the second output waveguide.

[0012] Furthermore, the input waveguide is arranged at the center of the overall resonant cavity structure formed by the first resonant cavity structure and the second resonant cavity structure, and inputs the radio frequency signal into the first resonant cavity structure and the second resonant cavity structure.

[0013] Furthermore, 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 resonant cavity structure, and the electric field strengths at the locations of the first output waveguide, the second output waveguide and the third output waveguide are different to achieve unequal power division.

[0014] Due to the adoption of the above technical solution, the present application has the following advantages: the present application can realize the function of changing the polarization direction of the electric field in the waveguide within a relatively small size, and has the advantages of simple structure, small size, and high power capacity; it has the functions of waveguide polarization conversion and waveguide unequal power division, and has a wide range of application value in the field of millimeter wave circuits. It realizes the function of adjusting the polarization direction of the RF signal in the waveguide. It simplifies the size and structure of the waveguide polarization conversion circuit; integrates the waveguide unequal power division function; has a simple structure and multiple functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a schematic structural diagram of a waveguide unequal power divider with polarization conversion function according to an embodiment of the present application; Figure numerals: 1 is an input waveguide, 2 is a first output waveguide, 3 is a second output waveguide, 4 is a third output waveguide, 5 is a first resonant cavity structure, and 6 is a second resonant cavity structure. DETAILED DESCRIPTION

[0017] The present application is further described in conjunction with the accompanying drawings and embodiments, and the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field should fall within the scope of protection of the embodiments of the present application.

[0018] See also 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 constitute an overall resonant cavity structure; the input waveguide 1 is connected to the first resonant cavity structure 5 and the second resonant cavity structure 6 respectively; 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 connected to the first resonant cavity structure 5 and the second resonant cavity structure 6 respectively.

[0019] Optionally, the direction of RF signal transmission in the input waveguide 1 is perpendicular to the transmission directions of RF signals in the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4, respectively; the sizes 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 RF signal powers output by the first output waveguide 2, the second output waveguide 3, and the third output waveguide 4.

[0020] Optionally, the RF signal outputted by 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 RF signal in the input waveguide 1 is converted into the transmission mode in the overall resonator structure, and at this time, the electric field direction of the RF signal in the overall resonator structure is changed relative to the electric field direction of the RF signal in the input waveguide 1. The TE10 mode is the main mode in the rectangular waveguide and is also the mode with the longest cutoff wavelength in the waveguide.

[0021] Optionally, the third output waveguide 4 is arranged at the center of the overall resonator structure formed by the first resonant cavity structure 5 and the second resonant cavity structure 6 .

[0022] Optionally, the third output waveguide 4 is located at the location where the electric field of the first resonant cavity structure 5 and the second resonant cavity structure 6 is the strongest; most of the energy of the radio frequency signal in the entire resonant cavity structure is output through the third output waveguide 4 .

[0023] Optionally, the first output waveguide 2 and the second output waveguide 3 are respectively arranged on both sides of the first resonant cavity structure 5; the input waveguide 1 and the third output waveguide 4 are respectively located on both sides of the overall resonant cavity structure.

[0024] Optionally, the first output waveguide 2 is located at the point where the electric field of the first resonant cavity structure 5 is strongest; the second output waveguide 3 is located at the point where the electric field of the second resonant cavity structure 6 is strongest; and a small portion of the RF signal energy in the overall resonant cavity structure is output through the first output waveguide 2 and the second output waveguide 3.

[0025] Optionally, the input waveguide 1 is arranged at the center of the overall resonant cavity structure formed by the first resonant cavity structure 5 and the second resonant cavity structure 6 to input the radio frequency signal into the first resonant cavity structure 5 and the second resonant cavity structure 6 .

[0026] Optionally, the first output waveguide 2, the second output waveguide 3 and the third output waveguide 4 are used to output the RF signal energy in the overall resonant cavity structure, and the electric field strengths at the locations of the first output waveguide 2, the second output waveguide 3 and the third output waveguide 4 are different to achieve unequal power division.

[0027] The present application provides a waveguide with a simple structure and a polarization conversion function and an integrated waveguide unequal power divider. By setting three waveguide ports perpendicular to the input waveguide at the overall resonant cavity (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 direction of the radio frequency signal in the first output waveguide, the second output waveguide and the third output waveguide is converted to a direction perpendicular to the transmission direction of the radio frequency signal in the input waveguide. By adjusting the size and position of the three output waveguide ports, the power of the radio frequency signal of the waveguide unequal power division is adjusted.

[0028] The principle of the present application is: After the RF signal is input from the input waveguide into the overall resonator structure composed of the first resonant cavity structure and the second resonant cavity structure, the RF signal resonates in the overall resonator structure, and its transmission mode and electric field direction have changed. The first output waveguide, the second output waveguide, and the third output waveguide are respectively set at the strongest electric field of the corresponding resonant cavity, and the RF signal energy in the overall resonant cavity structure can be output. Because the electric field strengths at the positions of the first output waveguide, the second output waveguide, and the third output waveguide 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 the present application cannot be directly connected to the input waveguide. The reason is that: the input waveguide is perpendicular to the waveguide directions of the first output waveguide, the second output waveguide and the third output waveguide, respectively. Therefore, the electric field direction of the radio frequency signal transmitted inside it is perpendicular to the electric field direction of the radio frequency signal in the first output waveguide, the second output waveguide and the third output waveguide, respectively, and the radio frequency signal cannot be transmitted with low loss; the shape of the input waveguide is inconsistent with that of the first output waveguide, the second output waveguide and the third output waveguide, respectively, and it is structurally impossible to realize the direct connection of the input waveguide with the first output waveguide, the second output waveguide and the third output waveguide.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A waveguide unequal power divider with polarization conversion function, characterized in that: The invention comprises 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 constitute 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.

2. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that: The transmission direction of the RF signal in the input waveguide is perpendicular to the transmission directions of the RF signals in the first output waveguide, the second output waveguide and the third output waveguide respectively; the sizes of the first output waveguide, the second output waveguide and the third output waveguide and the positions relative to the overall resonant structure are adjusted to change the RF signal powers 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 RF signal output by the input waveguide resonates in the overall resonator structure formed by the first resonant cavity structure and the second resonant cavity structure, so that the transmission mode of the RF 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 RF signal in the overall resonator structure changes relative to the electric field direction of the RF signal in the input waveguide.

4. 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 resonant cavity structure and the second resonant cavity structure.

5. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that: The third output waveguide is located at the location where the electric field of the first resonant cavity structure and the second resonant cavity structure is the strongest; most of the energy of the radio frequency signal in the overall resonant cavity structure is output through the third output waveguide.

6. 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 two sides of the first resonant cavity structure; the input waveguide and the third output waveguide are respectively located on two sides of the overall resonant cavity structure.

7. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that: The first output waveguide is located at the strongest electric field of the first resonant cavity structure; the second output waveguide is located at the strongest electric field of the second resonant cavity structure; a small portion of the RF signal energy in the overall resonant cavity structure is output through the first output waveguide and the second output waveguide.

8. 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 resonant cavity structure formed by the first resonant cavity structure and the second resonant cavity structure, and inputs the radio frequency signal into the first resonant cavity structure and the second resonant cavity structure.

9. The waveguide unequal power divider with polarization conversion function according to claim 1, characterized in that: 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 resonant cavity structure, and the electric field strengths at the locations of the first output waveguide, the second output waveguide and the third output waveguide are different to achieve unequal power division.

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