CN106207319B - A kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency - Google Patents

A kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency Download PDF

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CN106207319B
CN106207319B CN201610838767.0A CN201610838767A CN106207319B CN 106207319 B CN106207319 B CN 106207319B CN 201610838767 A CN201610838767 A CN 201610838767A CN 106207319 B CN106207319 B CN 106207319B
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metallic plate
pieces
metallic
outer conductor
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CN106207319A (en
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王晓玉
樊玉伟
舒挺
袁成卫
张强
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National University of Defense Technology
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00Auxiliary devices
    • H01P1/16Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/163Auxiliary 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

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Waveguide Aerials (AREA)

Abstract

The present invention relates to one mode converter, especially a kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency.Include the coaxial waveguide being made of inner wire and outer conductor, the first, second, third and fourth alignment of totally four pieces of front ends, rectangle metallic plate is axially inserted between the inner wire, outer conductor in the middle part of coaxial waveguide;It is five sections that the mode converter divides A, B, C, D, E successively by four pieces of metallic plates from front to back;The third metallic plate of the mode converter is made of three pieces of metallic plates, and intermediate metallic plate can be moved axially with the groove opened up in the conductor in three pieces of metallic plates;A sections of coaxial waveguide sections are provided with two rows of supporting rods;The inner wire of E sections (deferent segment) is extended to concordant with outer conductor back outlet by A, B, C, D sections of inner wires.The present invention has broader transfer efficiency bandwidth, higher transfer efficiency.

Description

A kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency
Technical field
The present invention relates to one mode converter, especially a kind of coaxial board plug type pattern of the Broadband FM of high conversion efficiency Converter.
Background technology
High-Power Microwave refers generally to peak power and is more than the electromagnetic wave of 100MW, frequency within the scope of 1GHz-300GHz.Closely Nian Lai, attractive prospect of the High-Power Microwave in various fields cause the extensive concern and numerous studies input of many countries, And greatly technological progress is obtained.Currently, to be concentrated mainly on the wave bands such as L, S, C, X, frequency solid for the research of high-power microwave source Fixed narrowband device.It will be under High-Power Microwave research field to develop the High-Power Microwave equipment with frequency-tunable function One of one emphasis.Most high-power microwave sources export coaxial waveguide or circular waveguide axisymmetry mould, such as TM0nOr TEM coaxial Mould etc., wherein prevailing model are circular waveguide TM01Mould and TEM coaxial mould.Field distribution and polarization direction due to these patterns is in wave Lead on cross section has rotational symmetry around waveguide axis, thus its radiation direction shows the axial cyclic annular far field direction for being zero Figure.Obviously, if the directly transmitting of such pattern or for drive traditional antenna will have it is axial be zero, power dissipation, secondary lobe The problems such as level is high, eventually leading to energy cannot effectively concentrate in target.Therefore, it usually requires to use high power in the application The circular waveguide TM that microwave mode converter generates high-power microwave source01Mould or coaxial waveguide TEM moulds are converted to TE11Mould, then lead to Aerial radiation is crossed to go out.
Currently, the High-Power Microwave mode converter being widely adopted is board plug type coaxial microwave mode converter(Liu Qing Think, board plug type coaxial microwave mode converter, patent No. ZL200410022230.4), including front is by inner wire 6 and outer conductor 7 coaxial waveguides constituted and the circular waveguide that is made of simple outer conductor 7 of rear portion, between the inner wire 6 of coaxial waveguide, outer conductor 7 Axially it is inserted with the first, second, third and fourth alignment of totally four pieces of front ends, rectangle metallic plate 1,2,3,4, and four pieces of metallic plates 1,2,3,4 It is all electrically connected respectively with the inner wire of coaxial waveguide 6, outer conductor 7, is in 90 ° of angles between adjacent wantonly two metallic plate;
First metallic plate 1 is most short, the length longest of the second, the 4th metallic plate 2,4 and equal, the length of third metallic plate 3 Shorter than second, the 4th metallic plate 2,4.If the length of the first, second, third and fourth metallic plate 1,2,3,4 is respectively L1、L2、L3、L4, then L1 < L3< L2=L4
The length of third metallic plate 3 and the difference of the first metallic plate 1 meet:180 ° be made of second, four metallic plates 2,4 90 ° of sectors that microwave electric field pattern in Fan-shaped waveguide is constituted with second and third metallic plate 2,3 or third and fourth metallic plate 3,4 The phase of microwave electric field pattern in Cross-section Waveguide Using differs 180 °.
The end of the inner wire 6 of coaxial waveguide is in the taper of certain slope.
The invention board plug type coaxial microwave mode converter, is divided into six sections successively by four pieces of metallic plates from front to back:A Section, the coaxial waveguide section formed by inner wire 6 and outer conductor 7;It B sections, is divided by the first, second, third and fourth metallic plate 1,2,3,4 Four 90 ° of Fan-shaped waveguides, length LbEqual to the length L of the first metallic plate 11, i.e. Lb=L1;C sections, by second, four gold medals Belong to plate 2,4 formed 180 ° of Fan-shaped waveguide and second and third metallic plate 2,3, third and fourth metallic plate 3,4 be divided into two A 90 ° of Fan-shaped waveguides, their length LcEqual to 3 length L of third metallic plate3With 1 length L of the first metallic plate1Difference, That is Lc= L3-L1;D sections, two 180 ° of the Fan-shaped waveguide formed by second, four metallic plates 2,4, length LdEqual to Two, the difference of four metallic plates 2,4 and 3 length of third metallic plate, i.e. Ld=L2-L3=L4-L3;E sections, by outer conductor 7 and be in certain slope The coaxial waveguide section that the taper inner wire 6 of degree is formed;F sections, the circular waveguide section only formed by outer conductor.
Due to being 180 ° of Fan-shaped waveguides in the half of C sections, waveguide, the other half is two 90 ° of sector crosssection waves It leads.Because two parts waveguide shapes are different, the TE inside transmitted11The propagation constant β of mould is also different, to be led C sections of end Cause the phase of two parts electric field different.As the length L of third metallic plate 3 and the first metallic plate 11、L3Meet relational expression(β1- β3)(L3-L1)When=π, the TE in C sections of end, two parts Fan-shaped waveguide11Mould has 180 ° of phase difference.β in formula1、β3 TE in 180 ° of expression, 90 ° of Fan-shaped waveguides respectively11The propagation constant of mould.
The structural advantages are:It is simple in structure, easy to implement, power capacity is high, input and output are coaxial.But this pattern There is also deficiencies for converter:Bandwidth of the transfer efficiency more than 90% cannot meet the height of a wide range of frequency modulation generally all 10% or so The demand of power microwave device.
Based on high-power microwave source to the characteristics of tunable development, development being capable of high efficiency converted wave rounding waveguide TM01Mould Or TEM coaxial mould --- TE11Mould and mode converter with wider transfer efficiency bandwidth has broad application prospects and again The scientific research value wanted.
Invention content
The technical problem to be solved by the present invention is to:Design a kind of coaxial board plug type pattern of the Broadband FM of high conversion efficiency turn Parallel operation, it can accomplish all to reach high conversion efficiency within the scope of whole bandwidth while improving transfer efficiency bandwidth.
The specific technical solution of the present invention is:A kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency, Its agent structure is identical as Chinese invention patent ZL200410022230.4, that is, include be made of inner wire and outer conductor it is coaxial Waveguide is axially inserted with first, second, third and fourth totally four pieces of front ends alignment, squares between the inner wire, outer conductor in the middle part of coaxial waveguide The metallic plate of shape, and four pieces of metallic plates are respectively electrically connected with the inner wire of coaxial waveguide, outer conductor, adjacent wantonly two metallic plate Between be in 90 ° of angles;The mode converter is divided into five sections successively by four pieces of metallic plates from front to back:It A sections, leads by inner wire and outside The coaxial waveguide section that body is formed;B sections, four 90 ° of Fan-shaped waveguides being divided by the first, second, third and fourth metallic plate, length Length of the degree equal to the first metallic plate;C sections, 180 ° of the Fan-shaped waveguide formed by second, four metallic plates and second and third Metallic plate, two 90 ° of Fan-shaped waveguides that third and fourth metallic plate is divided into, length are equal to third metallic plate length and first The difference of metallic plate length;D sections, two 180 ° of the Fan-shaped waveguide formed by second, four metallic plates, length is equal to the Two, the difference of four metallic plates and third metallic plate length;E sections, the coaxial waveguide section formed by outer conductor and inner wire;With China Unlike patent of invention ZL200410022230.4:
1. the mode converter third metallic plate is made of three pieces of metallic plates, three pieces of metallic plates are axially inserted into on-axis wave Between the inner wire led, outer conductor, the groove by being opened in inner wire, outer conductor circumferentially angular distribution respectively is fixed, and Three pieces of metallic plates are electrically connected with the inner wire of coaxial waveguide, outer conductor.Two pieces of metallic plates in outside are complete in three pieces of metallic plates It is identical, it is fixed after insertion internal and external conductor;Two pieces of metallic plate length phases of intermediate metallic plate and outside in three pieces of metallic plates Together, smooth with the side plane of inner wire electrical contact, it can be moved axially with the groove opened up in the conductor, it is fixed intermediate Metallic plate groove length should be greater than fixed two pieces of metallic plates close to outside groove length, occurrence is according to reality Border situation determines;The side plane that intermediate metallic plate is electrically connected with outer conductor in three pieces of metallic plates is set as rack, Ke Yi Axial direction under external gear driving along coaxial waveguide is slided.
2. the mode converter A sections of coaxial waveguide sections are provided with two rows of supporting rods, supporting rod is often arranged by four uniform edges The support bar group of circumference angular distribution is at and identical as the angular distribution of the first, second, third and fourth metallic plate respectively, two rows of branch Relative position between strut immobilizes and can axially be moved along four sections of grooves that A sections of internal and external conductor circumference angularly open up respectively It is dynamic.
3. described mode converter E sections(Deferent segment)Inner wire extended to by A, B, C, D sections of inner wires and led outside Body back outlet is concordant, and the output mode of final microwave is coaxial waveguide TE11Mould, to realize coaxial waveguide TEM moulds to coaxially The transformation of waveguide TE11 moulds.
The present invention the course of work be:The A sections of TEM coaxial moulds for microwave source input, the TEM moulds are converted to four at B sections TE in 90 ° of Fan-shaped waveguides11Mould, the TE in C sections of 180 ° of front end Fan-shaped waveguides and two 90 ° of Fan-shaped waveguides11 The polarization direction of mould microwave electric field is on the contrary, and the TEM moulds microwave electric field in C sections of two kinds of end waveguides generates 180 ° compared with front end Phase difference, and make the E field polarization direction in two kinds of waveguides from becoming identical on the contrary;In D sections two 180 ° of Fan-shaped waveguides Transmission is the consistent TE of E field polarization direction11Mould;Microwave mode in E sections is transformed to the TE in coaxial waveguide11Mould.To Realize transformation of the coaxial waveguide TEM moulds to coaxial waveguide TE11 moulds.
When metallic plate intermediate in third metallic plate is under the driving of external gear, axially moved along the groove of internal and external conductor When dynamic, third metallic plate length L3Consecutive variations, to meet relational expression at continuous frequency point(β13)(L3-L1)=π;Edge simultaneously The two rows of supporting rods of internal and external conductor groove axial movement are to corresponding position, to reduce reflection loss;It is final to realize broad frequency band range Interior high efficiency conversion.
The same of whole technique effects possessed by Chinese invention patent ZL200410022230.4 is being possessed using the present invention When, it may also reach up following technique effect:
1. intermediate in third metallic plate in the coaxial board plug type mode converter of the Broadband FM of high conversion efficiency of the present invention Metallic plate can be axially moveable in the groove of internal and external conductor, i.e. third metallic plate length L3It can be with consecutive variations, even Meet relational expression at continuous frequency point(β13)(L3-L1)=π;And four metallic plates in Chinese invention patent ZL200410022230.4 Length is fixed, and only meets relational expression at center frequency point(β13)(L3-L1)=π.To which the present invention is imitated with broader conversion Rate bandwidth.
2. in the coaxial board plug type mode converter of the Broadband FM of high conversion efficiency of the present invention, two rows of supporting rods are increased, Two rows of metallic rods can be axially moveable in the case where keeping relative position to immobilize in the groove of internal and external conductor, to subtract Small reflection loss.There is no supporting rod in Chinese invention patent ZL200410022230.4, thus distance center frequency point remotely Reflection loss is very big;The design of supporting rod reduces reflection loss in the present invention, more conducively improves transfer efficiency.
Description of the drawings
The rear end sectional view of board plug type coaxial microwave mode converter described in Fig. 1 background technologies(Liu Qing thinks that board plug type is same Axis microwave mode converter, patent No. ZL200410022230.4);
NN ' the sectional views of Fig. 2 Fig. 1;
MM ' the sectional views of Fig. 3 Fig. 1;
The threedimensional model of the coaxial board plug type mode converter of Broadband FM of Fig. 4 high conversion efficiencies of the present invention is illustrated Figure;
The front view of Fig. 5 Fig. 4;
The rearview of Fig. 6 Fig. 4;
The left view of Fig. 7 Fig. 4;
NN ' the sectional views of Fig. 8 Fig. 5;
MM ' the sectional views of Fig. 9 Fig. 5.
Specific implementation mode
The specific implementation mode of the present invention is further described below in conjunction with the accompanying drawings, the input of defining mode converter microwave One end be front end, microwave output one end be rear end.
Fig. 1-3 is respectively board plug type coaxial microwave mode converter described in national inventing patent ZL200410022230.4 Rear end sectional view, NN ' sectional views and MM ' sectional views.The board plug type coaxial microwave mode converter includes front by 6 He of inner wire The circular waveguide that the coaxial waveguide and rear portion that outer conductor 7 is constituted are made of simple outer conductor 7, inner wire 6, the outer conductor of coaxial waveguide Axially it is inserted with the first, second, third and fourth alignment of totally four pieces of front ends, rectangle metallic plate 1,2,3,4 between 7, and four pieces of metallic plates 1, 2, it 3,4 is all electrically connected respectively with the inner wire of coaxial waveguide 6, outer conductor 7, is in 90 ° of angles between adjacent wantonly two metallic plate;First gold medal It is most short to belong to plate 1, the length longest of the second, the 4th metallic plate 2,4 and equal, third metallic plate 3 is shorter in length than the second, the 4th gold medal Belong to plate 2,4;The length of third metallic plate 3 and the difference of 1 length of the first metallic plate meet following relationship:By second, four metallic plates 2, the microwave electric field pattern in the 4 180 ° of Fan-shaped waveguides constituted and second and third metallic plate 2,3 or third and fourth metallic plate 3,4 The phase of microwave electric field pattern in the 90 ° of Fan-shaped waveguides constituted differs 180 °;The end of the inner wire 6 of coaxial waveguide is in The taper of certain slope.
The invention board plug type coaxial microwave mode converter, is divided into six sections successively by four pieces of metallic plates from front to back:A Section, the coaxial waveguide section formed by inner wire 6 and outer conductor 7;It B sections, is divided by the first, second, third and fourth metallic plate 1,2,3,4 Four 90 ° of Fan-shaped waveguides, length LbEqual to the length L of the first metallic plate 11, i.e. Lb=L1;C sections, by second, four gold medals Belong to plate 2,4 formed 180 ° of Fan-shaped waveguide and second and third metallic plate 2,3, third and fourth metallic plate 3,4 be divided into two A 90 ° of Fan-shaped waveguides, their length LcEqual to 3 length L of third metallic plate3With 1 length L of the first metallic plate1Difference, That is Lc=L3-L1;D sections, two 180 ° of the Fan-shaped waveguide formed by second, four metallic plates 2,4, length LdEqual to Two, the difference of four metallic plates 2,4 and 3 length of third metallic plate, i.e. Ld=L2-L3=L2-L4;E sections, by outer conductor 7 and be in certain slope The coaxial waveguide section that the taper inner wire 6 of degree is formed;F sections, the circular waveguide section only formed by outer conductor.
Due to being 180 ° of Fan-shaped waveguides in the half of C sections, waveguide, the other half is two 90 ° of sector crosssection waves It leads.Because two parts waveguide shapes are different, the TE inside transmitted11The propagation constant β of mould is also different, to be led C sections of end Cause the phase of two parts electric field different.As the length L of third metallic plate 3 and the first metallic plate 11、L3Meet relational expression(β1- β3)(L3-L1)When=π, the TE in C sections of end, two parts Fan-shaped waveguide11Mould has 180 ° of phase difference.β in formula1、β3 TE in 180 ° of expression, 90 ° of Fan-shaped waveguides respectively11The propagation constant of mould.
The course of work of the invention is:The A sections of TEM coaxial moulds for microwave source input, the TEM moulds are converted to four at B sections TE in 90 ° of Fan-shaped waveguides11Mould, the TE in C sections of 180 ° of front end Fan-shaped waveguides and two 90 ° of Fan-shaped waveguides11 The polarization direction of mould microwave electric field is on the contrary, and the TEM moulds microwave electric field in C sections of two kinds of end waveguides generates 180 ° compared with front end Phase difference, and make the E field polarization direction in two kinds of waveguides from becoming identical on the contrary;In D sections two 180 ° of Fan-shaped waveguides Transmission is the consistent TE of E field polarization direction11Mould;Microwave mode in E sections is transformed to the TE in coaxial waveguide11Mould;F sections Microwave mode is then transformed to circular waveguide TE11Mould.To realize transformation of the coaxial waveguide TEM moulds to circular waveguide TE11 moulds.
Fig. 4-7 is that the threedimensional model of the coaxial board plug type mode converter of Broadband FM of high conversion efficiency of the present invention shows Front view, rearview, the left view of intention and threedimensional model schematic diagram.Fig. 8-9 is the broadband of high conversion efficiency of the present invention NN ' sectional views, the MM ' sectional views of the coaxial board plug type mode converter of frequency modulation.
As shown in figures 4-9, the coaxial board plug type mode converter of the Broadband FM of high conversion efficiency of the present invention, main body Structure is identical as Chinese invention patent ZL200410022230.4, that is, includes the on-axis wave being made of inner wire 6 and outer conductor 7 It leads, first, second, third and fourth totally four pieces of front end alignment, squares is axially inserted between the inner wire 6, outer conductor 7 in the middle part of coaxial waveguide The metallic plate 1,2,3,4 of shape, and four pieces of metallic plates 1,2,3,4 are all electrically connected with the inner wire of coaxial waveguide 6, outer conductor 7 respectively, It is in 90 ° of angles between adjacent wantonly two metallic plate;The mode converter is divided into five sections successively by four pieces of metallic plates from front to back:A Section, the coaxial waveguide section formed by inner wire 6 and outer conductor 7;It B sections, is divided by the first, second, third and fourth metallic plate 1,2,3,4 Four 90 ° of Fan-shaped waveguides, length LbEqual to the length L of the first metallic plate 11, i.e. Lb=L1;C sections, by second, four gold medals Belong to plate 2,4 formed 180 ° of Fan-shaped waveguide and second and third metallic plate 2,3, third and fourth metallic plate 3,4 be divided into two A 90 ° of Fan-shaped waveguides, their length LcEqual to 3 length L of third metallic plate3With 1 length L of the first metallic plate1Difference, That is Lc= L3-L1;D sections, two 180 ° of the Fan-shaped waveguide formed by second, four metallic plates 2,4, length LdEqual to Two, the difference of four metallic plates 2,4 and 3 length of third metallic plate, i.e. Ld=L2-L3=L4-L3;E sections, by 6 shape of outer conductor 7 and inner wire At coaxial waveguide section, unlike Chinese invention patent ZL200410022230.4:
1. the mode converter third metallic plate 3 is made of three pieces of metallic plates, three pieces of metallic plates are axially inserted into on-axis wave It is solid by the groove for being opened in inner wire 6, outer conductor 7 circumferentially angular distribution respectively between the inner wire 6 led, outer conductor 7 It is fixed, and three pieces of metallic plates are electrically connected with the inner wire of coaxial waveguide 6, outer conductor 7.Two blocks of metals in outside in three pieces of metallic plates Plate is identical, fixed after insertion internal and external conductor 6,7.Two blocks of metals of intermediate metallic plate and outside in three pieces of metallic plates Plate length is identical, and the side plane being in electrical contact with inner wire 6 is smooth, can be axially moveable in the groove of internal and external conductor 6,7, The length of the groove of fixed intermediate metallic plate should be greater than the length of the groove of fixed two pieces of metallic plates close to outside, specific Value is determines according to actual conditions;The side plane that intermediate metallic plate is electrically connected with outer conductor 6 in three pieces of metallic plates is set as tooth Item, axial direction that can be along coaxial waveguide under the driving of external gear are slided.
2. the mode converter A sections of coaxial waveguide sections are provided with two rows of supporting rods 5, it is uniform by four often to arrange supporting rod Circumferentially the support bar group of angular distribution at, and it is identical as the angular distribution of the first, second, third and fourth metallic plate 1,2,3,4 respectively, Relative position between the two rows supporting rod 5 immobilizes and can in an axial direction be moved in the groove of A sections of internal and external conductor 6,7 It is dynamic.
3. described mode converter E sections(Deferent segment)Inner wire extended to by A, B, C, D sections of inner wires and led outside Body back outlet is concordant, and the output mode of final microwave is coaxial waveguide TE11Mould, to realize coaxial waveguide TEM moulds to coaxially Waveguide TE11The transformation of mould.
In the present invention, the metallic plate among third metallic plate 3 moves in an axial direction in the groove 11,10 of internal and external conductor 6,7 When dynamic, 3 length L of third metallic plate3Consecutive variations, to meet relational expression at continuous frequency point(β13)(L3-L1)=π;In addition, Two rows of supporting rods 5 are moved axially to corresponding position along internal and external conductor 6,7 grooves 12, and to reduce reflection loss, final realization is wider High efficiency conversion in frequency range.
Compared with the board plug type coaxial microwave mode converter described in Chinese invention patent ZL200410022230.4, this hair The coaxial board plug type mode converter of Broadband FM of the bright high conversion efficiency have broader transfer efficiency bandwidth, higher turn Change efficiency.

Claims (2)

1. a kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency, includes being made of inner wire and outer conductor Coaxial waveguide is axially inserted with first, second, third and fourth totally four pieces of front ends alignment between the inner wire, outer conductor in the middle part of coaxial waveguide , the metallic plate of rectangle, and four pieces of metallic plates are respectively electrically connected with the inner wire of coaxial waveguide, outer conductor, adjacent wantonly two It is in 90 ° of angles between metallic plate;The mode converter is divided into five sections successively by four pieces of metallic plates from front to back:A sections, by inner wire The coaxial waveguide section formed with outer conductor;B sections, four 90 ° of sector crosssection waves being divided by the first, second, third and fourth metallic plate It leads, length is equal to the length of the first metallic plate;C sections, 180 ° of the Fan-shaped waveguide formed by second, four metallic plates, and Second and third metallic plate, two 90 ° of Fan-shaped waveguides that third and fourth metallic plate is divided into, length are equal to third metallic plate length With the difference of the first metallic plate length;D sections, two 180 ° of the Fan-shaped waveguide formed by second, four metallic plates, length Equal to the difference of second, four metallic plates and third metallic plate length;E sections, the coaxial waveguide section formed by outer conductor and inner wire; It is characterized in that:The third metallic plate of the mode converter is made of three pieces of metallic plates, and three pieces of metallic plates are axially inserted into coaxially Between the inner wire of waveguide, outer conductor, the groove by being opened in inner wire, outer conductor circumferentially angular distribution respectively is fixed, And three pieces of metallic plates are electrically connected with the inner wire of coaxial waveguide, outer conductor;Two pieces of metallic plates in outside are complete in three pieces of metallic plates It is exactly the same, it is inserted into fixed, two pieces of metallic plate length of intermediate metallic plate and outside in three pieces of metallic plates after internal and external conductor It is identical, it is smooth with the side plane of inner wire electrical contact, it can be moved axially with the groove opened up in the conductor, in fixed Between metallic plate groove length should be greater than fixed two pieces of metallic plates close to outside groove length;In three pieces of metallic plates The side plane that intermediate metallic plate is electrically connected with outer conductor is set as rack, can be under the driving of external gear along coaxial waveguide Axial direction slided;
Mode converter E sections of the inner wire extended to by A, B, C, D sections of inner wires it is concordant with outer conductor back outlet, The output mode of final microwave is coaxial waveguide TE11Mould, to realize change of the coaxial waveguide TEM moulds to coaxial waveguide TE11 moulds It changes.
2. the coaxial board plug type mode converter of the Broadband FM of high conversion efficiency according to claim 1, it is characterised in that:Institute It states A sections of coaxial waveguide sections of mode converter and is provided with two rows of supporting rods, often arrange supporting rod by four uniform circumferentially angular distributions Support bar group at and identical as the angular distribution of the first, second, third and fourth metallic plate respectively, the phase between the two rows supporting rods It immobilizes and can be moved axially along four sections of grooves that A sections of internal and external conductor circumference angularly open up respectively to position.
CN201610838767.0A 2016-09-22 2016-09-22 A kind of coaxial board plug type mode converter of the Broadband FM of high conversion efficiency Active CN106207319B (en)

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CN107123842A (en) * 2017-06-16 2017-09-01 中国工程物理研究院应用电子学研究所 A kind of band controllable mode converter of centre bore disk-loaded waveguide multifrequency
CN107749507B (en) * 2017-10-27 2018-10-12 中国人民解放军国防科技大学 High-power microwave TE21-TM01Mode converter
CN110048197A (en) * 2019-04-23 2019-07-23 电子科技大学 A kind of two-band coaxially embeds circular waveguide board plug type mode converter

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