CN107834143B - Rectangular waveguide multi-path equal-division power divider - Google Patents
Rectangular waveguide multi-path equal-division power divider Download PDFInfo
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Abstract
The invention provides a rectangular waveguide multi-path equal-division power divider which is used for solving the problems of size increase and device loss increase of the conventional waveguide multi-path equal-division power divider and difficulty in realizing odd-number path power distribution. The optical fiber transmission device comprises a rectangular input waveguide and a plurality of rectangular output waveguides with E-surface cut angles, wherein a first super-transmission diaphragm is loaded on one end face of the rectangular input waveguide, and a first C-shaped gap is arranged in the center of the rectangular input waveguide; the end face of one end, with a chamfer, of the rectangular output waveguide is loaded with a second super-transmission diaphragm, the center of the second super-transmission diaphragm is provided with a second C-shaped gap, one ends of all waveguide loading diaphragms are spliced along the wide side of the rectangular waveguide to form a radial structure, a polygonal prism-shaped cavity with closed upper and lower surfaces is formed at the mutual splicing position, and the opening of the first C-shaped gap 31 and the opening of the second C-shaped gap 41 form a clockwise/counterclockwise direction on the wall of the polygonal prism-shaped cavity. The waveguide multi-path equal power distribution can be directly realized.
Description
Technical Field
The invention belongs to the technical field of microwaves, and relates to a waveguide multipath equal power divider which can be used for various microwave systems such as communication equipment, radars, satellite receiving and power amplifying circuits and the like.
Technical Field
The power divider can divide one path of input signal energy into two paths or multiple paths of equal or unequal energy outputs in a microwave system, and is an essential device for an array antenna and a power synthesis amplifier. The multi-path power divider can be divided into a microstrip power divider, a waveguide power divider and a strip line power divider according to the transmission line type, and compared with other power dividers, the waveguide multi-path power divider has the characteristics of low loss, high power capacity and simple structure, so that the multi-path power divider is widely applied to actual engineering.
The traditional multipath equal-division waveguide power divider mostly adopts a T-shaped structure, the basic unit of the structure is a one-to-two waveguide power divider, one path of signal is gradually divided into multiple paths through a series of basic units for output, and an N-path equal-division power divider is formed in a basic unit cascade connection mode. For example, in 2013, guobe et al published a paper entitled "analysis and design of six-way rectangular waveguide power divider" in "radio communication technology" at stage 2, and the paper realizes the six-way power divider by using six one-to-two power dividers and using a 3-time cascading method.
The prior art also discloses a waveguide multi-path equal-dividing power divider realized by a substrate integrated waveguide combination. For example, a chinese patent with an issued publication number CN100511833C entitled "substrate integrated waveguide broadband multi-path power divider" discloses a substrate integrated waveguide multi-path equal power divider, which combines three parts of a substrate integrated waveguide T-shaped two-path power divider, a substrate integrated waveguide Y-shaped two-path power divider and a substrate integrated waveguide right-angle bend to form 2NThe way equally divides the power divider.
The prior art mentioned above introduces the design of the waveguide multi-path power divider, but the design of the waveguide multi-path power divider is not easy to implement odd-numbered power division no matter in a cascading manner or in a manner of combining waveguides integrated on different substrates, and when the number of output paths increases, the problems of size increase, power division efficiency reduction and the like are caused. These disadvantages limit the application of waveguide multi-path power splitters to some extent.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a rectangular waveguide multipath equal power divider, which is characterized in that a supertransmission diaphragm is loaded at the output end of an input waveguide and the input end of an output waveguide, and a C-shaped gap with different forms is loaded at the center of the supertransmission diaphragm to form a radiation type structure with a polygonal column cavity, so that waveguide multipath equal power division is realized, and the problems of increased size and increased device loss and difficulty in realizing odd-numbered path power division in the prior art are solved.
In order to achieve the purpose, the invention adopts the technical scheme that:
rectangular waveguide multi-path equal power division deviceThe distributor comprises a radiation type structure with a closed cavity, wherein the structure comprises an input waveguide 1 and N first output waveguides 2, wherein N is an even number which is more than or equal to 2; the input waveguide 1 adopts a rectangular waveguide, and a first rectangular super transmission diaphragm 3 is loaded on the end face of the input waveguide which serves as an output end; the first output waveguide 2 adopts a rectangular waveguide with an E-face chamfer at one end, the end face is used as an input end, and a second rectangular super transmission diaphragm 4 is loaded on the end face of the input end; the output end of the input waveguide 1 is spliced with the input ends of the N first output waveguides 2 along the wide edge of the rectangular waveguide, the input waveguide 1 and the N first output waveguides 2 are arranged in a radioactive mode, the output ends of the input waveguide 1 are spliced with the input ends of the N first output waveguides 2 to form a polygonal prism-shaped cavity, metal sheets for sealing are loaded at the upper end and the lower end of the cavity respectively, and an included angle theta between the input waveguide 1 and the adjacent first output waveguide 2 is1And the angle theta between each first output waveguide 22Satisfies 2 theta1+(N-1)θ2360 °; a first opening gap 31 is arranged at the central position of the first rectangular super transmission diaphragm 3 for realizing frequency selection characteristics in a frequency range, and a second opening gap 41 is arranged at the central position of the second rectangular super transmission diaphragm 4 for realizing equal power distribution at a frequency point.
In the rectangular waveguide multipath equal-division power divider, the first super-transmission diaphragm 3 loaded on the output end of the input waveguide 1 is of a rectangular structure with the size equal to that of the end face of the input end of the input waveguide 1, the first opening gap 31 is arranged in the center of the rectangular structure, the C-shaped resonant ring structure is adopted, the sizes of the horizontal side and the vertical side of the C-shaped resonant ring structure are equal, and the opening faces to the wide side of the input waveguide 1.
In the rectangular waveguide multipath equal power divider, the second super-transmission diaphragm 4 loaded on the input end of the first output waveguide 2 is in a rectangular structure with the size equal to that of the end face of the input end of the first output waveguide 2, the second opening gap 41 is arranged in the center of the second super-transmission diaphragm, a C-shaped resonant ring structure is adopted, the size of the horizontal side of the C-shaped resonant ring structure is smaller than that of the vertical side of the C-shaped resonant ring structure, and the opening of the C-shaped resonant ring structure faces the wide side of the first output.
In the rectangular waveguide multipath equal power divider, the opening of the first opening slit 31 arranged at the center of the first super transmission diaphragm 3 and the opening of the second opening slit 41 arranged at the center of the second super transmission diaphragm 4 form a clockwise/counterclockwise direction on the wall of the polygonal prism cavity.
A waveguide multi-path equal-division power divider comprises a radiation type structure with a closed cavity, wherein the structure comprises an input waveguide 1, N first output waveguides 2 and a second output waveguide 5, wherein N is an even number which is more than or equal to 2; the input waveguide 1 adopts a rectangular waveguide, and a first rectangular super transmission diaphragm 3 is loaded on the end face of the input waveguide which serves as an output end; the first output waveguide 2 adopts a rectangular waveguide with an E-face chamfer at one end, the end face is used as an input end, and a second rectangular super transmission diaphragm 4 is loaded on the end face of the input end; the second output waveguide 5 is a rectangular waveguide, and a third rectangular super-transmission diaphragm 6 is loaded on one end face of the second output waveguide; the input waveguide 1, the N first output waveguides 2 and the second output waveguide 5 are arranged in a radioactive mode, the output end of the input waveguide 1, the input end of the N first output waveguides 2 and the input end of the second output waveguide 5 are spliced along the wide edge of the rectangular waveguide, the axis of the second output waveguide 5 is overlapped with the axis of the input waveguide 1 to form a multi-prism-shaped cavity, metal sheets for sealing are loaded at the upper end and the lower end of the cavity respectively, and an included angle theta between the input waveguide 1 and the adjacent first output waveguide 2 is equal to the included angle theta1And angle theta between each output waveguide2Satisfies 2 theta1+Nθ2360 °; a second opening gap 31 is arranged at the central position of the first rectangular super-transmission diaphragm and used for realizing frequency selection characteristics in a frequency range; and a second opening gap 41 is formed in the central position of the second rectangular super transmission diaphragm, and a third opening gap 61 is formed in the central position of the third rectangular super transmission diaphragm and is used for realizing equal power distribution at a frequency point.
In the rectangular waveguide multipath equal-division power divider, the first super-transmission diaphragm 3 loaded on the output end of the input waveguide 1 is of a rectangular structure with the size equal to that of the end face of the input end of the input waveguide 1, the first opening gap 31 is arranged in the center of the rectangular structure, the C-shaped resonant ring structure is adopted, the sizes of the horizontal side and the vertical side of the C-shaped resonant ring structure are equal, and the opening faces to the wide side of the input waveguide 1.
In the rectangular waveguide multipath equal power divider, the second super-transmission diaphragm 4 loaded on the input end of the first output waveguide 2 is in a rectangular structure with the size equal to that of the end face of the input end of the first output waveguide 2, the second opening gap 41 is arranged in the center of the second super-transmission diaphragm, a C-shaped resonant ring structure is adopted, the size of the horizontal side of the C-shaped resonant ring structure is smaller than that of the vertical side of the C-shaped resonant ring structure, and the opening of the C-shaped resonant ring structure faces the wide side of the first output.
In the rectangular waveguide multipath equal power divider, the second super-transmission diaphragm 6 loaded on the input end of the second output waveguide 5 is in a rectangular structure with the size equal to that of the end face of the input end of the second output waveguide 5, the third opening gap 61 arranged in the center of the second super-transmission diaphragm adopts a C-shaped resonant ring structure, the horizontal side size of the C-shaped resonant ring structure is smaller than the vertical side size, and the opening faces the wide side of the first output waveguide 5.
In the rectangular waveguide multipath equal power divider, the opening of the first opening slit 31 arranged at the center of the first super transmission diaphragm 3, the opening of the second opening slit 41 arranged at the center of the second super transmission diaphragm 4, and the opening of the third opening slit 61 arranged at the center of the third super transmission diaphragm 6 form a clockwise/counterclockwise direction on the wall of the polygonal prism cavity.
Compared with the prior art, the invention has the following advantages:
1. according to the waveguide multi-path equal-power distribution device, the super-transmission diaphragm is loaded at the output end of the input waveguide, the super-transmission diaphragm is loaded at the input end of the output waveguide, the C-shaped gaps in different forms are loaded at the center of the super-transmission diaphragm, the radiation structure with the polygonal prism cavity at the center is formed, waveguide multi-path equal-power distribution is achieved, compared with the prior art, the waveguide multi-path equal-power distribution device is easy to directly achieve power dividers with different output paths, the size of the power divider is reduced, and loss of the device is reduced.
2. The included angle theta between the input waveguide and the adjacent first output waveguide of the invention1And angle theta between each output waveguide2Satisfy certain relation, can realize the equipower distribution of different angles through adjusting the contained angle between input waveguide and the adjacent output waveguide.
3. The center frequency is regulated and controlled by directly regulating the first opening gap at the center of the first super transmission diaphragm, and when signal energy passes through the cavity, the two paths of output signal energy are equal by directly regulating the second opening gap at the center of the second super transmission diaphragm, so that the structure is simple and the operation is easy.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of an input waveguide and a first supertransmission diaphragm loaded with a first open slit of the present invention;
FIG. 3 is a schematic diagram of the construction of a first output waveguide and a second supertransmission diaphragm loaded with a second open slit in accordance with the present invention;
FIG. 4 is a schematic view of the overall structure of embodiment 4 of the present invention;
FIG. 5 is a schematic structural view of a second output waveguide and a third supertransmission diaphragm loaded with a third aperture gap in accordance with the present invention;
FIG. 6 is a simulation graph of S-parameters of examples 1 to 3 of the present invention;
fig. 7 is a diagram of simulation results of S parameters in embodiments 4 to 6 of the present invention.
Detailed Description
The invention is further explained by the following two embodiments of the novel power divider with two-in-one and three-in-one, which are provided in combination with the accompanying drawings and embodiments.
Example 1
Referring to fig. 1, the present embodiment includes an input waveguide 1 and two first output waveguides 2. The input waveguide 1 adopts a standard WR90 waveguide rectangular waveguide with a single-mode transmission frequency range of 8.2-12.4GHz, one end of the rectangular waveguide is used as an input end of signal energy, a first super transmission diaphragm 3 is loaded on the end face, a first opening gap 31 of a C-type resonant ring structure is arranged at the center of the diaphragm, the center of the gap is superposed with the center of the super transmission diaphragm 3, the opening of the gap faces the wide edge position of the end face of the super transmission diaphragm 3, and the length of a horizontal edge is equal to the length of a vertical edge; the first output waveguide 2 is a rectangular waveguide having an E-plane chamfer at one end, the chamfer having a rectangular shape and serving as an output end of signal energyA chamfer on the E surface is formed with the H surface and is vertical to the E surface, the E surface is in a right trapezoid shape, a second super transmission diaphragm 4 is loaded on the tangent surface, the center of the diaphragm is provided with a second opening gap 41 of a C-type resonant ring structure, the center of the gap is superposed with the center of the super transmission diaphragm 4, and the length of the horizontal edge of the gap is less than that of the vertical edge; one end of the input waveguide 1 loaded with the first super transmission diaphragm 3 and one end of the 2 first output waveguides 2 loaded with the second super transmission diaphragm 4 are spliced along the wide edge of the rectangular waveguide to form a radiation structure with a triangular prism cavity at the center, metal sheets are loaded on the upper surface and the lower surface of the triangular prism cavity and connected with the E surface of the rectangular waveguide to form an included angle theta between the input waveguide 1 and the adjacent output waveguides 2 of a closed cavity1And the angle theta between each output waveguide 22Satisfies 2 theta1+(N-1)θ2＝360°。
The opening of the first opening gap 31 and the opening of the third opening gap 41 form a uniform reverse/clockwise direction on the wall of the central triangular prism cavity, when signal energy enters the cavity through the first opening gap, the regulation and control characteristic of central frequency is realized by adjusting the size of the first opening gap, and when signal energy passes through the second opening gap in the cavity, the size of the second opening gap is adjusted to realize the equality of the signal energy output by two paths, so that the one-to-two equal power divider is realized. In this embodiment θ1＝90°。
Referring to fig. 2(a), the input waveguide 1 has a width a of 10.16mm, a height b of 22.86mm, and a waveguide length l of preferably 40mm, and the first hypertransport diaphragm 3 loaded on one end surface has a first open slit 31 provided at its center, and referring to fig. 2(b), the first open slit 31 has a length d in both horizontal and vertical sides and a slit width of w, and in the present embodiment, the first open slit has the following dimensions: the length d of the horizontal and vertical sides is 5.6mm, and the gap width w is 1 mm.
Referring to FIG. 3(a), the first output waveguide 2 has an end with an E-facet cut angle, a height b of 22.86mm and a width a' when θ1At an angle of less than or equal to 120 DEG
When theta is1When the temperature is more than or equal to 120 ℃,
the width a of the other end is 10.16mm, the height b is 22.86mm, and the length of the bottom edge of the waveguide is l1The included angle between the tangent plane and the H-plane is θ, the center of the second supertransmission diaphragm 4 loaded on the tangent plane is provided with a second opening slit 41, referring to fig. 3(b), the lengths of the horizontal edge and the vertical edge of the second opening slit 41 are d1And d2The length of the gap width is w1. In the present embodiment, the sizes of the first output waveguide and the second open slot are set as follows: the length a' of the wide side of the cutting surface is 11.36mm, and the length l of the bottom side140mm, the included angle theta between the tangent plane and the H plane is 63 degrees, the opening direction of the C-shaped gap is taken as the reference, and the length d of the horizontal edge of the first opening gap and the second opening gap is taken as the reference13.9mm, length d of the vertical edge2Is 10mm, the width w of the gap1Is 1mm, the length d of the horizontal side of the second opening gap13.93mm, length d of the vertical side2Is 10 mm.
Example 2
The structure and principle of the present embodiment are the same as those of embodiment 1, and only for θ1The parameters associated therewith are adjusted.
In the present embodiment, θ1120 °, the size of the first opening gap is set as follows: the length d of the horizontal side and the vertical side is 5.6mm, and the width w of the gap is 1 mm; the dimensions of the second output waveguide and the second open slot are set as follows: the length a' of the wide side of the cutting surface is 11.16mm, and the length l of the bottom side140mm, the included angle theta between the tangent plane and the H plane is 90 degrees, the opening direction of the C-shaped gap is taken as a reference, the length of the horizontal side of the first opening gap and the length d of the vertical side of the first opening gap are 3.9mm2Is 10mm, the width w of the gap1Is 1mm, the length d of the horizontal side of the second opening gap14mm, length d of the vertical edge2Is 10 mm.
Example 3
This exampleHas the same structure and principle as those of embodiment 1, and is only for θ1The parameters associated therewith are adjusted.
In the present embodiment, θ1140 °, the size of the first opening gap is set as follows: the length d of the horizontal side and the vertical side is 5.6mm, and the width w of the gap is 1 mm; the dimensions of the second output waveguide and the second open slot are set as follows: the length a' of the wide side of the cutting surface is 11mm, and the length l of the bottom side135.79mm, the included angle theta between the tangent plane and the H plane is 67.5 degrees, and the length d of the horizontal edge of the first and second opening slits is based on the opening direction of the C-shaped slit14mm, length d of the vertical edge2Is 10mm, the width w of the gap1Is 1mm, the length d of the horizontal side of the second opening gap14.19mm, length d of the vertical side2Is 10 mm.
Example 4
Referring to fig. 4, the present embodiment includes an input waveguide 1, two first output waveguides 2, and a second output waveguide 5. The input waveguide 1 adopts a standard WR90 waveguide rectangular waveguide with a single-mode transmission frequency range of 8.2-12.4GHz, one end of the rectangular waveguide serves as an input end of signal energy, a first super transmission diaphragm 3 is loaded on the end face, a first opening gap 31 is arranged at the center of the diaphragm, the center of the gap is overlapped with the center of the super transmission diaphragm 3, the opening of the gap faces the wide edge of the input waveguide, and the length of the horizontal edge is equal to that of the vertical edge; the first output waveguide 2 is a rectangular waveguide with an E-surface chamfer at one end, the chamfer is rectangular and serves as an output end of signal energy, the chamfer and an H surface form a chamfer on the E surface and are vertical to the E surface, the E surface is in a right-angled trapezoid shape, a second super-transmission diaphragm 4 is loaded on the chamfer, a second opening gap 41 is arranged at the center of the diaphragm, the center of the gap is overlapped with the center of the super-transmission diaphragm 4, and the length of the horizontal edge of the gap is smaller than that of the vertical edge; the second output waveguide 5 adopts a standard WR90 waveguide rectangular waveguide with single-mode transmission frequency range of 8.2-12.4GHz, one end of the rectangular waveguide is used as an output end of signal energy, the end face is loaded with a third super transmission diaphragm 6, the center position of the diaphragm is provided with a third opening gap 61 of a C-type resonant ring structure, the center of the gap and the center of the super transmission diaphragm 6 are respectively provided with a first opening and a second opening, and the first opening and the second opening are respectively provided with a first opening and a secondThe centers are overlapped, and the length of the horizontal side of the center is smaller than that of the vertical side. One end of an input waveguide 1 loaded with a first super transmission diaphragm 3, one end of 2 first output waveguides 2 loaded with a second super transmission diaphragm 4 and one end of a second output waveguide 5 loaded with a third super transmission diaphragm 6 are spliced along the wide edge of a rectangular waveguide to form a radiation structure with a quadrangular prism cavity at the center, metal sheets are loaded on the upper surface and the lower surface of the quadrangular prism cavity and connected with the E surface of the rectangular waveguide to form a closed cavity, wherein the axis of the second output waveguide 5 is superposed with the axis of the input waveguide 1, and the included angle theta between the input waveguide 1 and the adjacent output waveguide 2 is equal to the included angle theta1And angle theta between each output waveguide2Satisfies 2 theta1+2θ2＝360°。
The opening directions of the first opening gap 31, the second opening gap 41 and the third opening gap 61 form a uniform reverse/clockwise direction on the wall of the central quadrangular prism cavity, when signal energy enters the cavity through the first opening gap, the regulation and control characteristic of central frequency is realized by adjusting the size of the first opening gap, when signal energy passes through the second opening gap and the third opening gap in the cavity, the signal energy output by three paths is equal by adjusting the sizes of the second opening gap and the third opening gap, and therefore the power divider with one dividing into three paths is realized. In this embodiment θ1＝90°。
The input waveguide 1, the first supertransmission diaphragm and the first open slit have the same structures as those of the input waveguide 1, the first supertransmission diaphragm and the first open slit in embodiment 1, and only relevant parameters are adjusted. In the present embodiment, the size of the first opening slit is set as follows: the length d of the horizontal and vertical sides is 5.7mm, and the gap width w is 1 mm.
The first output waveguide 2 has a height b of 22.86mm and a width a' a/sin (180 ° - θ) at the end with the E-plane chamfer1) The width a of the other end is 10.16mm, the height b is 22.86mm, and the length of the bottom edge of the waveguide is l1The waveguide E surface is in a right trapezoid shape, the included angle between the tangent plane and the H surface is theta, a second super transmission diaphragm 4 loaded on the tangent plane is provided with a second opening gap 41 at the center, and the lengths of the horizontal edge and the vertical edge of the second super transmission diaphragm are d respectively1And d2The length of the gap width is w1. In the present embodiment, the sizes of the first output waveguide 2 and the second open slot are set as follows: the included angle between the tangent plane and the H surface is theta 90 DEG, and the length of the bottom edge of the E surface is l140mm, the length a' of the wide side of the end with the cut angle of the E-face is 10.16mm, and the length d of the horizontal side of the first and second opening slits 4113.7mm, length d of the vertical side2Is 10mm, the length w of the gap width1Is 1mm, and the length d of the horizontal side of the second opening slit 4113.8mm, length d of the vertical edge2Is 10 mm.
Referring to fig. 5(a), the second output waveguide 5 has the same structure as the input waveguide 1, and the third super transmission diaphragm 6 having one end surface is provided with a third aperture 61 at the center thereof, and referring to fig. 5(b), the lengths of the horizontal side and the vertical side of the aperture of the third aperture 61 are d3And d4The length of the gap width is w2. In the present embodiment, the size of the third opening slit is set as follows: length d of horizontal side34mm, length d of the vertical edge4Is 10mm, the width w of the gap2Is 1 mm.
Example 5
The structure and principle of the present embodiment are the same as those of embodiment 4, and only for θ1The parameters associated therewith are adjusted.
In the present embodiment, θ1120 °, the size of the first opening gap is set as follows: the length d of the horizontal and vertical sides is 5.7mm, the slot width w is 1mm, and the dimensions of the second output waveguide and the second open slot are set as follows: the length a' of the broadside at the end of the first output waveguide with the E-plane chamfer is 11.73mm, and the length l of the bottom edge134.13mm, the included angle theta between the tangent plane and the H plane is 60 degrees, the opening direction of the C-shaped gap is taken as the reference, and the length d of the horizontal edge of the first opening gap and the second opening gap is taken as the reference14.2mm, length d of the vertical side2Is 10mm, the width w of the gap1Is 1mm, the length d of the horizontal side of the second opening gap13.8mm, length d of the vertical edge2Is 10mm, the width w of the gap1For 1mm, the dimensions of the third opening slit are set as follows: of the horizontal sides of the third opening slit 61Length d33.8mm, length d of the vertical edge4Is 10mm, the length w of the gap width2Is 1 mm.
Example 6
The structure and principle of the present embodiment are the same as those of embodiment 4, and only for θ1The parameters associated therewith are adjusted.
In this example, θ1140 °, the size of the first opening gap is set as follows: the length d of the horizontal and vertical sides is 5.7mm, the slot width w is 1mm, and the dimensions of the second output waveguide and the second open slot are set as follows: the length a' of the broadside at the end of the first output waveguide with the E-plane chamfer is 15.81mm, and the length l of the bottom edge1Is 32.1mm, the included angle theta between the curved section and the H surface is 40 degrees, the opening direction of the C-shaped gap is taken as a reference, and the length d of the horizontal edge of the first opening gap and the second opening gap is taken as the reference13.8mm, length d of the vertical edge2Is 10mm, the width w of the gap1Is 1mm, the length d of the horizontal side of the second opening gap13.8mm, length d of the vertical edge2Is 10mm, the width w of the gap1For 1mm, the dimensions of the third opening slit are set as follows: the length d of the horizontal side of the third opening slit 6133.7mm, length d of the vertical side4Is 10mm, the length w of the gap width2Is 1 mm.
The technical effects of the present invention will be described in further detail below in conjunction with simulation experiments.
1. Simulation conditions and contents:
and performing S parameter simulation calculation at different angles on two embodiments of one in two and one in three by adopting CST Microwave Studio electromagnetic simulation software.
1.1 Angle θ for example 11A plot of the simulated S-parameters at 10GHz center frequency for a 90 degree halved power divider is shown in fig. 6 (a).
1.2 Angle θ for example 21The simulated S-parameter plot at the center frequency of 10GHz for a one-to-two equal-split power divider at 120 degrees is shown in fig. 6 (b).
1.3 Angle θ for example 31Is 140 degreesThe simulated S-parameter plot at the center frequency of 10GHz of the time-halved power divider is shown in fig. 6 (c).
1.4 Angle θ for example 41A plot of the simulated S-parameters at 10GHz center frequency for a 90 degree one-to-three equal split power divider is shown in fig. 7 (a).
1.5 Angle θ for example 51A graph of the S-parameters obtained by simulation at a center frequency of 10GHz for a one-to-three equal-division power divider at 120 degrees is shown in fig. 7 (b).
1.6 Angle θ for example 61The simulated S-parameter plot at the center frequency of 10GHz for a one-to-three equal-split power divider at 140 degrees is shown in fig. 7 (c).
2. And (3) simulation result analysis:
referring to FIG. 6(a), it can be seen from the simulation results that the pair θ1A power divider with 90 deg. one-to-two equal division and a reflection coefficient of S11 at 10GHz center frequency<20dB, S21 and S31 are basically close to-3 dB, and a good equal power distribution ratio is realized.
Referring to FIG. 6(b), it can be seen from the simulation results that the pair θ1A power divider with one-to-two equal division at 120 deg. and a reflection coefficient of S11 at 10GHz<20dB, S21 and S31 are basically close to-3 dB, and a good equal power distribution ratio is realized.
Referring to FIG. 6(c), it can be seen from the simulation results that the pair θ1A power divider with one-to-two equal division at 140 deg. and a reflection coefficient of S11 at 10GHz<20dB, S21 and S31 are basically close to-3 dB, and a good equal power distribution ratio is realized.
Referring to FIG. 7(a), it can be seen from the simulation results that the pair θ1A power divider with 90 deg. one-to-three equal division and a reflection coefficient of S11 at 10GHz center frequency<20dB, S21, S31 and S41 are basically close to-4.8 dB, and a good equal power distribution ratio is realized.
Referring to FIG. 7(b), it can be seen from the simulation results that the pair θ1A power divider with one to three equal division at 120 deg. and a reflection coefficient of S11 at 10GHz<20dB, S21, S31 and S41 are basically close to-4.8 dB, and a good equal power distribution ratio is realized.
Referring to FIG. 7(c), it can be seen from the simulation results that the pair θ1A power divider with one to three equal division at 140 deg. and a reflection coefficient of S11 at 10GHz<20dB, S21, S31 and S41 are basically close to-4.8 dB, and a good equal power distribution ratio is realized.
The results with reference to fig. 6 and 7 show that when the number of output paths is increased, the size of the gap is adjusted by only increasing the number of the super transmission diaphragms, so that the equal power divider with different number of output paths is directly realized.
The above description is only two specific examples of the present invention and does not constitute any limitation of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein.
Claims (9)
1. A rectangular waveguide multi-path equal power divider is characterized in that: the waveguide structure comprises a radiation type structure with a closed cavity, wherein the structure comprises an input waveguide (1) and N first output waveguides (2), wherein N is an even number which is more than or equal to 2; the input waveguide (1) adopts a rectangular waveguide, and a first rectangular super-transmission diaphragm (3) is loaded on the end face of the input waveguide which serves as an output end; the first output waveguide (2) adopts a rectangular waveguide with an E-surface chamfer at one end, the end face is used as an input end, and a second rectangular super-transmission diaphragm (4) is loaded on the end face of the input end; the input waveguide (1) and the N first output waveguides (2) are arranged in a radioactive mode, the output ends of the input waveguide (1) and the input ends of the N first output waveguides (2) are spliced along the wide edges of the rectangular waveguides to form a polygonal prism-shaped cavity, metal sheets for sealing are loaded at the upper end and the lower end of the cavity respectively, and the included angle theta between the input waveguide (1) and the adjacent first output waveguide (2)1And the angle theta between each first output waveguide (2)2Satisfies 2 theta1+(N-1)θ2360 °; a first opening gap (31) is arranged at the central position of the first rectangular super transmission diaphragm (3) and used for realizing the frequency selection characteristic in a frequency rangeAnd a second opening gap (41) is arranged at the central position of the two rectangular super transmission diaphragms (4) and is used for realizing equal power distribution at a frequency point.
2. The rectangular waveguide multi-way equal power divider of claim 1, wherein: the first rectangular super-transmission diaphragm (3) loaded at the output end of the input waveguide (1) is of a rectangular structure with the size equal to that of the input end face of the input waveguide (1), a first opening gap (31) is formed in the center of the first rectangular super-transmission diaphragm, a C-type resonant ring structure is adopted, the sizes of the horizontal side and the vertical side of the C-type resonant ring structure are equal, and the opening faces to the wide side of the input waveguide (1).
3. The rectangular waveguide multi-way equal power divider of claim 1, wherein: the second rectangular super-transmission diaphragm (4) loaded on the input end of the first output waveguide (2) is of a rectangular structure with the size equal to that of the end face of the input end of the first output waveguide (2), a second opening gap (41) is formed in the center of the second rectangular super-transmission diaphragm, a C-shaped resonant ring structure is adopted, the size of the horizontal side of the C-shaped resonant ring structure is smaller than that of the vertical side of the C-shaped resonant ring structure, and the opening of the C-shaped resonant ring structure faces the wide side of the first output.
4. The rectangular waveguide multi-way equal power divider of claim 1, wherein: the opening of a first opening gap (31) arranged at the center of the first rectangular super transmission diaphragm (3) and the opening of a second opening gap (41) arranged at the center of the second rectangular super transmission diaphragm (4) form a clockwise/anticlockwise direction on the wall of the polygonal prism cavity.
5. A rectangular waveguide multi-path equal power divider is characterized in that: the waveguide structure comprises a radiation type structure with a closed cavity, wherein the structure comprises an input waveguide (1), N first output waveguides (2) and a second output waveguide (5), wherein N is an even number which is more than or equal to 2; the input waveguide (1) adopts a rectangular waveguide, and a first rectangular super-transmission diaphragm (3) is loaded on the end face of the input waveguide which serves as an output end; the first output waveguide (2) adopts a rectangular waveguide with an E-face chamfer at one end, and the end face is used as the rectangular waveguideIs an input end, and a second rectangular super transmission diaphragm (4) is loaded on the end face of the input end; the second output waveguide (5) is a rectangular waveguide, and a third rectangular super-transmission diaphragm (6) is loaded on one end face of the second output waveguide; the waveguide structure is characterized in that the input waveguide (1), the N first output waveguides (2) and the second output waveguide (5) are arranged in a radioactive mode, the output end of the input waveguide (1), the input end of the N first output waveguides (2) and the input end of the second output waveguide (5) are spliced along the wide edge of the rectangular waveguide, the axis of the second output waveguide (5) is overlapped with the axis of the input waveguide (1) to form a multi-prism-shaped cavity, metal sheets for sealing are loaded at the upper end and the lower end of the cavity respectively, and the included angle theta between the input waveguide (1) and the adjacent first output waveguide (2)1And angle theta between each output waveguide2Satisfies 2 theta1+Nθ2360 °; a first opening gap (31) is formed in the center of the first rectangular super transmission diaphragm and used for realizing frequency selection characteristics in a frequency range; and a second opening gap (41) is formed in the center of the second rectangular super transmission diaphragm, and a third opening gap (61) is formed in the center of the third rectangular super transmission diaphragm and is used for realizing equal power distribution at a frequency point.
6. The rectangular waveguide multi-way equal power divider according to claim 5, wherein: the first rectangular super-transmission diaphragm (3) loaded at the output end of the input waveguide (1) is of a rectangular structure with the size equal to that of the input end face of the input waveguide (1), a first opening gap (31) is formed in the center of the first rectangular super-transmission diaphragm, a C-type resonant ring structure is adopted, the sizes of the horizontal side and the vertical side of the C-type resonant ring structure are equal, and the opening faces to the wide side of the input waveguide (1).
7. The rectangular waveguide multi-way equal power divider according to claim 5, wherein: the second rectangular super-transmission diaphragm (4) loaded on the input end of the first output waveguide (2) is of a rectangular structure with the size equal to that of the end face of the input end of the first output waveguide (2), a second opening gap (41) is formed in the center of the second rectangular super-transmission diaphragm, a C-shaped resonant ring structure is adopted, the size of the horizontal side of the C-shaped resonant ring structure is smaller than that of the vertical side of the C-shaped resonant ring structure, and the opening of the C-shaped resonant ring structure faces the wide side of the first output.
8. The rectangular waveguide multi-way equal power divider according to claim 5, wherein: the third rectangular super-transmission diaphragm (6) loaded on the input end of the second output waveguide (5) is of a rectangular structure with the size equal to that of the end face of the input end of the second output waveguide (5), a third opening gap (61) is formed in the center of the third rectangular super-transmission diaphragm, a C-shaped resonant ring structure is adopted, the size of the horizontal side of the C-shaped resonant ring structure is smaller than that of the vertical side of the C-shaped resonant ring structure, and the opening faces the wide side of the first output waveguide (5).
9. The rectangular waveguide multi-way equal power divider according to claim 5, wherein: the opening of a first opening gap (31) arranged at the center of the first rectangular super transmission diaphragm (3), the opening of a second opening gap (41) arranged at the center of the second rectangular super transmission diaphragm (4) and the opening of a third opening gap (61) arranged at the center of the third rectangular super transmission diaphragm (6) form a clockwise/counterclockwise direction on the wall of the polygonal prism cavity.
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