CN105489976A - Compact circular waveguide TM01-TE01 mode converter - Google Patents
Compact circular waveguide TM01-TE01 mode converter Download PDFInfo
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- CN105489976A CN105489976A CN201510943958.9A CN201510943958A CN105489976A CN 105489976 A CN105489976 A CN 105489976A CN 201510943958 A CN201510943958 A CN 201510943958A CN 105489976 A CN105489976 A CN 105489976A
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- waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/163—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion specifically adapted for selection or promotion of the TE01 circular-electric mode
Abstract
The invention discloses a compact circular waveguide TM01-TE01 mode converter, and aims to provide the mode converter from a circular waveguide TM01 mode to a circular waveguide TE01 mode, wherein the mode converter has a compact structure, and the input and the output of the mode converter are on the same straight line. The mode converter mainly comprises an input circular waveguide (1) for propagating the TM01 mode, an output circular waveguide (5) for propagating the TE01 mode, N rectangular E-surface 90-degree bending waveguides (2), N rectangular 90-degree twisted waveguides (3) and N rectangular H-surface 90-degree bending waveguides (4), wherein N is an even number greater than 3. According to the mode converter, the two circular waveguides for propagating the TM01 mode and the TE01 mode separately are coaxially arranged; the adjacent one surfaces on the inner sides of the two circular waveguides are short-circuit surfaces; the two circular waveguides are in coupling connection through a series of rectangular waveguide assemblies with even-number columns, wherein the rectangular waveguide assemblies are connected in sequence, and the side faces of the rectangular waveguide assemblies are arranged at the equal intervals; the mode converter is compact in structure, small in size and light in weight; the mode converter adopts an axial symmetrical structure, and the input and the output are arranged on the same axial line, so that the mode purity of the output TE01 mode is improved.
Description
Technical field
The invention belongs to microwave waveguide technical field, relate to a kind of circular waveguide mode converter.
Background technology
The TE01 pattern of circular waveguide not only has the little advantage of long-distance transmissions loss, also the mode of operation of rotary joint is suitable as, but a lot of high-power microwave source at present, as relativistic backward wave oscillator, and the output of MILO all adopts circular waveguide TM01 pattern, therefore in actual applications, needing the TM01 mode-conversion of circular waveguide is TE01 mould.
At present, the conversion method of existing circular waveguide TM01 to TE01 pattern adopts the structure implementation pattern of segmentation conversion to change, and its structure as shown in Figure 1.First circular waveguide TM01 mode convertion is become circular waveguide TE11 mould by this structure, and then by TE11 mode convertion to TM11 mould, finally by one section of waveguide bend, TM11 mode convertion is become TE01 mould.Although circular waveguide TM01 patten transformation can be become TE01 pattern, this complex structure by this transformational structure effectively, size is comparatively large, and the input and output of this transformational structure are not on the same axis, bring much inconvenience to practical application.
Summary of the invention
The technical problem that the present invention solves is: overcome the deficiencies in the prior art, provide the patten transformation device of a kind of compact circular waveguide TM01 mould to TE01 mould, the simple volume of structure is little, can realize the input and output of circular waveguide on the same axis.
Technical solution of the present invention is: a kind of compact circular waveguide TM01-TE01 mode converter, comprise the input circular waveguide propagating TM01 mould, output circular waveguide, the 90 degree of curved waveguides in N number of rectangle E face, N number of rectangle 90 degree of waveguide twists, the 90 degree of curved waveguides in N number of rectangle H face of propagating TE01 mould, wherein N be greater than 3 even number; Input circular waveguide and output circular waveguide co-axial alignment from left to right, the right side of input circular waveguide is short circuit face, described 90 degree of curved waveguides in N number of rectangle E face are evenly distributed on input circular waveguide side circumferentially, and one end of the 90 degree of curved waveguides in N number of rectangle E face is connected in the lateral vertical near side, short circuit face with input circular waveguide; The left side exporting circular waveguide is short circuit face, described 90 degree of curved waveguides in N number of rectangle H face are evenly distributed on and export circular waveguide side circumferentially, and one end of the 90 degree of curved waveguides in N number of rectangle H face is being connected with the lateral vertical exporting circular waveguide near side, short circuit face; Each rectangle 90 degree of waveguide twists are all corresponding with unique 90 degree, rectangle E face curved waveguide and unique 90 degree, rectangle H face curved waveguide, the left side of rectangle 90 degree of waveguide twists is connected with 90 degree, rectangle E face curved waveguide, and the right side of rectangle 90 degree of waveguide twists is connected with 90 degree, rectangle H face curved waveguide.
The broadside of described 90 degree, rectangle E face curved waveguide with the joint face place of input circular waveguide and the axes normal of input circular waveguide, the simultaneously broadside at the joint face place of 90 degree, rectangle E face curved waveguide and rectangle 90 degree of waveguide twists and the axes normal of input circular waveguide.
The broadside of described 90 degree, rectangle H face curved waveguide with the joint face place of output circular waveguide and the axis being parallel of output circular waveguide, the simultaneously broadside at the joint face place of 90 degree, rectangle H face curved waveguide and rectangle 90 degree of waveguide twists and the axis being parallel of output circular waveguide.
The distance of the short circuit face distance input circular waveguide of described input circular waveguide and the rectangle coupling aperture center line of rectangle 90 degree of waveguide twists is the odd-multiple of the quarter-wave guide wavelength inputting TM01 pattern in circular waveguide.
The distance of the short circuit identity distance output circular waveguide of described output circular waveguide and the rectangle coupling aperture center line of the 90 degree of curved waveguides in rectangle H face is the odd-multiple of the quarter-wave guide wavelength exporting TE01 pattern in circular waveguide.
Described N is 4 or 6.
The present invention's advantage is compared with prior art:
(1) circular waveguide TM01-TE01 mode converter of the present invention, adopts rectangular waveguide first by the TM01 mould Energy extraction in input circular waveguide out, then in output circular waveguide, is blended into TE01 mould, achieves patten transformation.The method substantially reduces the space length needed for mode conversion, achieves compact conformation, lightweight, reaches miniaturization;
(2) circular waveguide TM01-TE01 mode converter of the present invention, adopt input circular waveguide and export the coaxial setting of circular waveguide, the input and output achieving mode converter on the same axis, are conducive to actual use;
(3) circular waveguide TM01-TE01 mode converter of the present invention, adopts symmetrical mode transition structure, restrained effectively the generation of asymmetric mode, ensure that the mode purity exporting circular waveguide TE01 mould.
Accompanying drawing explanation
Fig. 1 is existing circular waveguide TM01-TE01 mode converter structure chart;
Fig. 2 is circular waveguide TM01-TE01 mode converter structure chart of the present invention.
Embodiment
Circular waveguide TM01-TE01 mode converter of the present invention, its structure composition as shown in Figure 1, mainly comprises input circular waveguide 1, exports circular waveguide 5 and their each Kondo-like effect assemblies of connecting between the two.First choose input circular waveguide 1 and export the radius size of circular waveguide 5, ensure at the operating frequencies TM02 mould and more higher mode be cut-off mode.One end, left side of input circular waveguide 1 is used for the microwave energy that feed-in pattern is TM01 mould, the right side short at one end of input circular waveguide 1.As preferably, the present embodiment adopts 6 identical 90 degree, rectangle E face curved waveguides 2 to be equidistantly of coupled connections with input circular waveguide 1 along input circular waveguide 1 side apart from the circumferencial direction of short circuit face certain distance.At coupling aperture place, wide of the connection of the 90 degree of curved waveguides 2 in rectangle E face and the axes normal of input circular waveguide 1, to realize the coupling of TM01 to rectangular waveguide TE10 mould.Input circular waveguide 1 short circuit identity distance is the odd-multiple of the quarter-wave guide wavelength of TM01 pattern in input circular waveguide 1 from the distance of rectangle coupling aperture center line, to strengthen the Energy Coupling of TM01 to rectangular waveguide TE10 mould.
Then 6 90 degree, rectangle E face curved waveguides 2 are more respectively along connecing an identical rectangular 90 degree of waveguide twists 3, rectangle 90 degree of waveguide twists 3 are then along connecing 90 degree, a rectangle H face curved waveguide 4, and the 90 degree of waveguide bends 4 in last rectangle H face are connected at side surface coupling with the output circular waveguide 5 of left side short circuit.Here, the size of the 90 degree of curved waveguides 2 in each rectangle E face, rectangle 90 degree of waveguide twists 3 and rectangle H face 90 degree of curved waveguide 4 joint faces is all identical.Export circular waveguide 5 and the dead in line of input circular waveguide 1, the outlet opening extreme direction exporting circular waveguide 5 is contrary with the feed opening extreme direction of input circular waveguide 1.Now edge same with exporting 90 degree H face Curved Rectangular Waveguides 4 be coupled of circular waveguide 5 exports circular waveguide 5 side surface circumference direction and equidistantly arranges, and the broadside at rectangle coupling aperture place is consistent with exporting circular waveguide 5 axis direction.Export the odd-multiple that circular waveguide 5 short circuit identity distance is the quarter-wave guide wavelength of TE01 pattern in circular waveguide from rectangle coupling aperture place center line, to strengthen the Energy Coupling of rectangle TE10 to circular waveguide TE01 mould.
Certainly, in actual application, the quantity of concrete rectangular waveguide is not limited to 6, if it is N, so N gets the even number being greater than 3, for Assured Mode purity.Even number N preferably 4 or 6, N when being greater than 8, though can Assured Mode purity, but can increase system bulk and complexity, and due to size restrictions, circular waveguide surrounding is difficult to there are enough space arrangements.
Operation principle of the present invention is as follows:
As shown in Figure 2, after microwave energy inputs circular waveguide 1 with TM01 pattern from left end feed-in, transmit to the right along straight circular waveguide.When microwave energy arrive 90 degree, rectangle E face curved waveguide 2 and input circular waveguide 1 be of coupled connections locate time, due to rectangle be of coupled connections wide of mouth with the central axis upright of input circular waveguide 1, in input circular waveguide 1, the magnetic field of TM01 pattern is identical with the magnetic direction of TE10 in the curved waveguide 2 of 90 degree, rectangle E face, thus the TM01 mould inputted in circular waveguide 1 realizes close coupling by with the TE10 mould in the curved waveguide 2 of 90 degree, rectangle E face, now, in input circular waveguide 1, most of microwave energy of TM01 mould to enter in 6 identical 90 degree, rectangle E face curved waveguides 2 through the mouth that is of coupled connections with TE10 pattern constant power, the microwave energy of remainder continues along input circular waveguide 1 the short circuit face that is transmitted to, be coupled out from 90 degree, 6 rectangle E faces curved waveguide 2 constant power again after microwave energy is reflected, because the distance at the distance rectangle coupling aperture center, position in input circular waveguide 1 short circuit face is the odd-multiple of the quarter-wave guide wavelength of the TM01 pattern of input circular waveguide 1, so the microwave in-phase stacking be coupled out for twice before and after 6 rectangle coupling apertures, achieve the high efficiency conversion of circular waveguide TM01 mould to rectangle TE10 mould.After microwave energy in input circular waveguide 1 is coupled into 90 degree, rectangle E face curved waveguide, continue to propagate with rectangle TE10 pattern.
Again respectively along connecing a rectangle 90 degree of waveguide twists 3 after the curved waveguide 2 of 90 degree, rectangle E face, finally more respectively along connecing 90 degree, a rectangle H face curved waveguide 4.90 degree, rectangle H face curved waveguide 4 is connected with output circular waveguide 5.Rectangle 90 degree of waveguide twists 3 and 90 degree, rectangle H face curved waveguide 4 only transmit microwave energy, are still rectangle TE10 pattern.Thus, the microwave energy being coupled into the 90 degree of curved waveguides 2 in rectangle E face is transmitted to 90 degree, rectangle H face curved waveguide 4 and the junction exporting circular waveguide 5 with TE10 mould.
90 degree, rectangle H face curved waveguide 4 is connected with output circular waveguide 5, and rectangle is of coupled connections wide of mouth with the centerline axis parallel exporting circular waveguide 5,6 90 degree, H face curved waveguides 4 are evenly distributed on the side surface circumference of output circular waveguide 5.Because the magnetic field of TE10 pattern in the curved waveguide 4 of 90 degree, H face is identical with the magnetic direction exporting TE01 in circular waveguide 5.Therefore in output circular waveguide 5, excitation is played TE01 pattern, realize TE10 mould and TE01 mould close coupling in output circular waveguide 5 in the curved waveguide 4 of 90 degree, rectangle H face, microwave energy will export in circular waveguide 5 with the feed-in of TE01 mould.
Enter the microwave energy exported in circular waveguide 5 to propagate to short pavement end and output port both direction with TE01 pattern.After being shorted face reflection towards the TE01 mould of short pavement end, also propagate to delivery outlet direction.Distance due to short circuit identity distance rectangle coupling aperture center line is the odd-multiple of the quarter-wave guide wavelength exporting TE01 pattern in circular waveguide 5, therefore two-way microwave, by in-phase stacking, achieves TE10 pattern and the high efficiency conversion exporting TE01 pattern in circular waveguide 5 in the curved waveguide 4 of 90 degree, H face like this.Microwave energy in input circular waveguide 5 continues to propagate with TE01 pattern.Final whole device achieves the patten transformation of circular waveguide TM01 mould to TE01 mould.
The content be not described in detail in specification of the present invention belongs to the known technology of those skilled in the art.
Claims (6)
1. a compact circular waveguide TM01-TE01 mode converter, it is characterized in that comprising: propagate the input circular waveguide (1) of TM01 mould, the output circular waveguide (5) propagating TE01 mould, 90 degree, N number of rectangle E face curved waveguide (2), N number of rectangle 90 degree of waveguide twists (3), 90 degree, N number of rectangle H face curved waveguide (4), wherein N be greater than 3 even number; Input circular waveguide (1) and output circular waveguide (5) co-axial alignment from left to right, the right side of input circular waveguide (1) is short circuit face, described 90 degree, N number of rectangle E face curved waveguide (2) is evenly distributed on input circular waveguide (1) side circumferentially, and one end of the 90 degree of curved waveguides (2) in N number of rectangle E face is connected in the lateral vertical near side, short circuit face with input circular waveguide (1); The left side exporting circular waveguide (5) is short circuit face, described 90 degree, N number of rectangle H face curved waveguide (4) is evenly distributed on and exports circular waveguide (5) side circumferentially, and one end of the 90 degree of curved waveguides (4) in N number of rectangle H face is being connected with the lateral vertical exporting circular waveguide (5) near side, short circuit face; Each rectangle 90 degree of waveguide twists (3) are all corresponding with 90 degree, unique rectangle E face curved waveguide (2) and unique 90 degree, rectangle H face curved waveguide (4), 90 degree of curved waveguides (2) in left side and rectangle E face of rectangle 90 degree of waveguide twists (3) are connected, and 90 degree of curved waveguides (4) in right side and rectangle H face of rectangle 90 degree of waveguide twists (3) are connected.
2. a kind of compact circular waveguide TM01-TE01 mode converter according to claim 1, it is characterized in that: the broadside of 90 degree, described rectangle E face curved waveguide (2) with the joint face place of input circular waveguide (1) and the axes normal of input circular waveguide (1), simultaneously the broadside of 90 degree, rectangle E face curved waveguide (2) with the joint face place of rectangle 90 degree of waveguide twists (3) and the axes normal of input circular waveguide (1).
3. a kind of compact circular waveguide TM01-TE01 mode converter according to claim 1, it is characterized in that: 90 degree, described rectangle H face curved waveguide (4) and the broadside at joint face place and the axis being parallel of output circular waveguide (2) that export circular waveguide (2), the simultaneously broadside of 90 degree, rectangle H face curved waveguide (4) with the joint face place of rectangle 90 degree of waveguide twists (3) and the axis being parallel of output circular waveguide (2).
4. a kind of compact circular waveguide TM01-TE01 mode converter according to claim 1, is characterized in that: short circuit face distance input circular waveguide (1) of described input circular waveguide (1) and the distance of the rectangle coupling aperture center line of rectangle 90 degree of waveguide twists (3) are the odd-multiple of the quarter-wave guide wavelength inputting TM01 pattern in circular waveguide (1).
5. a kind of compact circular waveguide TM01-TE01 mode converter according to claim 1, is characterized in that: short circuit identity distance output circular waveguide (5) and the distance of the rectangle coupling aperture center line of the 90 degree of curved waveguides (4) in rectangle H face of described output circular waveguide (5) are the odd-multiple of the quarter-wave guide wavelength exporting TE01 pattern in circular waveguide (5).
6. a kind of compact circular waveguide TM01-TE01 mode converter according to claim 1, is characterized in that: described N is 4 or 6.
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| CN201510943958.9A CN105489976B (en) | 2015-12-16 | 2015-12-16 | A kind of compact circular waveguide TM01 TE01 mode converters |
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| CN201510943958.9A CN105489976B (en) | 2015-12-16 | 2015-12-16 | A kind of compact circular waveguide TM01 TE01 mode converters |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069153A (en) * | 2017-04-12 | 2017-08-18 | 北京大学 | One kind is based on surface plasmons waveguide bend mode converter and its implementation |
| CN110011003A (en) * | 2019-01-30 | 2019-07-12 | 中国人民解放军63653部队 | A kind of circular waveguide TM01-Polarize adjustable TE11 mode converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716407A (en) * | 2015-01-07 | 2015-06-17 | 西北核技术研究所 | Microwave mode converter |
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2015
- 2015-12-16 CN CN201510943958.9A patent/CN105489976B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716407A (en) * | 2015-01-07 | 2015-06-17 | 西北核技术研究所 | Microwave mode converter |
Non-Patent Citations (2)
| Title |
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| JIAWEI LI ET AL: "A Novel X-Band Diplexer Based on Overmoded Circular Waveguides for High-Power Microwaves", 《IEEE TRANSACTIONS ON PLASMA SCIENCE 》 * |
| 郭乐田等: "圆波导TM01-矩形波导TE10模式转换器", 《强激光与粒子束》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069153A (en) * | 2017-04-12 | 2017-08-18 | 北京大学 | One kind is based on surface plasmons waveguide bend mode converter and its implementation |
| CN110011003A (en) * | 2019-01-30 | 2019-07-12 | 中国人民解放军63653部队 | A kind of circular waveguide TM01-Polarize adjustable TE11 mode converter |
| CN110011003B (en) * | 2019-01-30 | 2021-04-02 | 中国人民解放军63653部队 | Circular waveguide TM01TE with adjustable polarization11Mode converter |
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