CN202817153U - Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes - Google Patents
Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes Download PDFInfo
- Publication number
- CN202817153U CN202817153U CN 201220393960 CN201220393960U CN202817153U CN 202817153 U CN202817153 U CN 202817153U CN 201220393960 CN201220393960 CN 201220393960 CN 201220393960 U CN201220393960 U CN 201220393960U CN 202817153 U CN202817153 U CN 202817153U
- Authority
- CN
- China
- Prior art keywords
- coaxial line
- rectangular coaxial
- coupling
- main
- main rectangular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes. The multi-hole directional coupler includes a main rectangular coaxial line, an auxiliary rectangular coaxial line, and coupling holes. The main rectangular coaxial line and the auxiliary rectangular coaxial line are isolated from each other; the main rectangular coaxial line is communicated with the auxiliary rectangular coaxial line through at least three coupling holes; at least one coupling hole comprises a hollow coupling tube which is affixed at a side wall of the main rectangular coaxial line or/and a side wall of the auxiliary rectangular coaxial line; a side wall of the hollow coupling tube, which is adjacent to the main rectangular coaxial line, is provided with a coupling cavity with three open ends; the coupling cavity is in conduction with the hollow coupling tube; the coupling cavity is arranged between the main rectangular coaxial line and the auxiliary rectangular coaxial line and is in conduction with the main rectangular coaxial line and the auxiliary rectangular coaxial line; the coupling holes are arranged along the axial direction of the main rectangular coaxial line; and adjacent coupling holes arranged along the axial direction of the main rectangular coaxial line are located at one side of the main rectangular coaxial line. The multi-hole directional coupler of the utility model is advantageous in compact structure, simple processing, large power capacity, ultra wide operation bandwidth and low insertion loss.
Description
Technical field
The utility model relates to multi-hole directional coupler, specifically, relates to a kind of different multi-hole directional coupler of major-minor rectangular coaxial linear dimension that utilizes a plurality of holes to be coupled.
Background technology
Directional coupler is widely used a kind of microwave device in microwave system, and its Main Function is that microwave signal is carried out to power division according to a certain percentage; Directional coupler consists of two transmission lines, and coaxial line, rectangular waveguide, circular waveguide, strip line and microstrip line etc. all can form directional coupler; So of a great variety from the structure directional coupler, widely different, but mainly be divided into four kinds from their coupling mechanism, i.e. aperture coupling, parallel coupling, branch's coupling and coupling double T.
Before early 1950s, nearly all microwave equipment all adopts metal waveguide and waveguide circuit, and directional coupler at that time also mostly is the Waveguide Hole coupling directional coupler; Its theoretical foundation is the Bethe slot-coupling theory, and the people such as Cohn and Levy have also done a lot of contributions.
Development along with the aerospace technology, require microwave circuit and system to accomplish miniaturization, lightweight and dependable performance, so strip line and microstrip line have occurred, the microwave integrated transmission-lines such as fin line, the line of rabbet joint, co-planar waveguide and coplanar stripline have appearred again in needs due to microwave circuit and system in succession subsequently, various transmission line directional couplers so just occurred.
The tradition single-hole directional coupler has some advantage: as simple in structure, parameter is few, design is got up more convenient; But it also exists some shortcomings: as poor as narrow bandwidth, directivity, only suitable in the work of design frequency place, drift out this frequency, and directivity will reduce.
Although the tradition multi-hole directional coupler can accomplish that very wide bandwidth, directivity also have very and improve, but also exist some shortcomings, as large as volume, requirement on machining accuracy is high, insertion loss is high, particularly at the millimeter wave terahertz wave band, too high Insertion Loss makes this device lose use value; This just encourages us to remove to design a kind of novel porous directional coupler that can overcome these shortcomings.
The utility model content
The purpose of this utility model is to overcome some shortcomings of traditional directional coupler, provides that a kind of compact, insertion loss are low, the different multi-hole directional coupler of major-minor rectangular coaxial linear dimension in broadband.
To achieve these goals, the technical solution adopted in the utility model is as follows: the multi-hole directional coupler that major-minor rectangular coaxial linear dimension is different comprises main rectangular coaxial line that mutual isolation and structure are consistent and secondary rectangular coaxial line and as the coupling aperture of coupling channel; Wherein main rectangular coaxial line and secondary rectangular coaxial line are all to consist of rectangular waveguide and the built-in conductor be arranged in rectangular waveguide, have added parallel with the axis of coupling aperture and vertical with the main rectangular coaxial bobbin thread cylindrical metal body of another axis in wherein said coupling aperture; One end of this cylindrical metal body connects with the inwall of corresponding coupling aperture; The cross section of this cylindrical metal body be shaped as polygon; Main rectangular coaxial line is communicated with secondary rectangular coaxial line by least 3 coupling apertures, at least 1 coupling aperture comprise be attached to main rectangular coaxial line sidewall or and the hollow tube coupling of secondary rectangular coaxial line sidewall, the hollow tube coupling is connected with the coupling cavity of three end openings near the sidewall of main rectangular coaxial line, coupling cavity and the conducting of hollow tube coupling, coupling cavity between main rectangular coaxial line and secondary rectangular coaxial line and with main rectangular coaxial line and secondary rectangular coaxial line conducting; Described coupling aperture is arranged along the axis direction of main rectangular coaxial line, is positioned at a side of main rectangular coaxial bobbin thread along the adjacent coupling aperture of main rectangular coaxial line axis direction; Along on main rectangular coaxial line axis direction, the hole of adjacent two coupling apertures in the heart apart from the guide wavelength of main rectangular coaxial line 20% ~ 30% between;
The size Expressing of main rectangular coaxial line is: a1*h1, the size Expressing of secondary rectangular coaxial line is: a2*h2, a1, a2 are expressed as respectively the width of main rectangular coaxial line and secondary rectangular coaxial line outer conductor, and h1, h2 are expressed as respectively the height of main rectangular coaxial line and secondary rectangular coaxial line outer conductor;
The size situation of the size of main rectangular coaxial line and secondary rectangular coaxial line is as follows:
Situation A: when the size of main rectangular coaxial line is less than the size of secondary rectangular coaxial line,
H2*15%<h1<h2*85% or and a2*15%<a1<a2*85%;
Situation B: when the size of main rectangular coaxial line is greater than the size of secondary rectangular coaxial line,
H1*15%<h2<h1*85% or and a1*15%<a2<a1*85%;
Situation C: when the size of main rectangular coaxial line equals the size of secondary rectangular coaxial line,
A1=a2 and h1=h2.
When the above-mentioned three kinds of different situations of the selection of dimension of main rectangular coaxial line and secondary rectangular coaxial line, can obtain three kinds of different results.People were the preferential transmission channel of identical rectangular coaxial line as guide directional coupler of selecting in the past, still, when selecting situation A or situation B, in millimere-wave band and terahertz wave band, can obtain filter with low insertion loss, the better multi-hole directional coupler of directivity.Namely this extra degree of freedom can help us to design the better multi-hole directional coupler of directivity.
The projection of shape that coupling aperture is overlooked on direction at it is circle, and the projection of shape that coupling cavity is overlooked on direction at it is semicircle, and the projection of shape that the hollow tube coupling is overlooked on direction at it is semicircle.Due to traditional multi-hole directional coupler, the size of main rectangular coaxial line and secondary rectangular coaxial line all adopts same size, and the position of the coupling aperture in simultaneously traditional multi-hole directional coupler is arranged between main rectangular coaxial line and secondary rectangular coaxial line.And improvement of the present utility model is: 1, the position of traditional coupling aperture is adjusted, design accordingly and the coupling aperture of adjusting rear structure and being complementary, be that coupling aperture in the utility model is comprised of coupling cavity and hollow tube coupling, wherein during setting position, coupling cavity is arranged between main rectangular coaxial line and secondary rectangular coaxial line, in order to be communicated with main rectangular coaxial line and secondary rectangular coaxial line, owing to also being provided with the hollow tube coupling, can further strengthen coupling; 2, because experiment is found, when we adopt the main rectangular coaxial line of common size and secondary rectangular coaxial line to be designed, the directivity of ordinary construction is than the good directionality of same size, therefore, the main rectangular coaxial line adopted in the utility model and secondary rectangular coaxial line are adjusting aspect size, the directivity of increase coupler that can be extra.
Therefore while designing, preferentially arrange hollow tube coupling in coupling aperture be attached to main rectangular coaxial line sidewall or and secondary rectangular coaxial line sidewall.Further preferentially be set to: the size of main rectangular coaxial line and secondary rectangular coaxial line all adopts common size.
While according to the above-mentioned coupler of preferentially being arranged to, being coupled output, its course of work is: microwave is at first by main rectangular coaxial line, while locating in the structure Coupling hole, by coupling cavity, microwave coupling is arrived to secondary rectangular coaxial line, added close coupling under the effect of hollow tube coupling, make its directivity grow, further the size due to main rectangular coaxial line and secondary rectangular coaxial line adopts common size; Therefore reinforcement can also further be coupled on the above-mentioned basis that adds close coupling.
Described cylindrical metal body divides the inside that extends into main rectangular coaxial line.
The axis of the axis of the built-in conductor of described main rectangular coaxial line and the built-in conductor of secondary rectangular coaxial line is parallel to each other.
Described main rectangular coaxial line or and the one or both ends of secondary rectangular coaxial line also be connected with curved waveguide.
Described main rectangular coaxial line Huo and secondary rectangular coaxial line are connected with the matching structure with extraneous device matching in its one or both ends.
The part of coupling aperture is beyond main rectangular coaxial line or secondary rectangular coaxial line, or the while is outside main rectangular coaxial line and secondary rectangular coaxial line.
Single-hole directional coupler has relatively narrow bandwidth on directivity, so people have expected a series of coupling apertures of design, this series of coupling aperture forms an array, and several arrays can also stack up, and come thus the comprehensive degree of coupling and directional responses.Utilize the directivity of aperture and the directivity of array to superpose in coupled end, just can obtain better directivity, and this extra degree of freedom can also improve bandwidth.
After coupling aperture is arranged along main rectangular coaxial line one side, under the condition that meets the coupling reinforcement, be adjacent two coupling apertures hole in the heart apart from should be arranged on main rectangular coaxial line the central task frequency guide wavelength 20% ~ 30% between, can reduce volume adding on the basis of close coupling, thereby further improve the superiority of this porous rectangular waveguide directional coupler.
Simultaneously, preferentially selecting cross section is that rectangle column metallic object is arranged in coupling aperture, and the position of cylindrical metal body in coupling aperture is unrestricted, can be arranged according to the actual requirements.
Angle between the axis of general main rectangular coaxial line and the axis of secondary rectangular coaxial line is between 0 ° to 180 °.For the volume that makes its whole coupler reduces, we pay the utmost attention to the axis of main rectangular coaxial line and the axis of secondary rectangular coaxial line be arranged in parallel.
The projection of shape that coupling aperture is overlooked direction at it is unrestricted, and when considering cost of manufacture, we pay the utmost attention to circle or triangle or the quadrangle of the simple and easy batch production of energy.
While increasing the cylindrical metal body, described coupling aperture and cylindrical metal body body are Y-shaped or cross and other starlike more than 4 branches in the projection of shape of overlooking direction.
Because the position of the coupling aperture of traditional multi-hole directional coupler is arranged between main rectangular coaxial line and secondary rectangular coaxial line.And improvement of the present utility model is: 1, the position of traditional coupling aperture is adjusted, design accordingly and the coupling aperture of adjusting rear structure and being complementary, be that coupling aperture in the utility model is comprised of coupling cavity and hollow tube coupling, wherein during setting position, coupling cavity is arranged between main rectangular coaxial line and secondary rectangular coaxial line, in order to be communicated with main rectangular coaxial line and secondary rectangular coaxial line, owing to also being provided with the hollow tube coupling, can further strengthen coupling; 2, because experiment is found, when we select a plurality of coupling aperture, the directivity that adjacent coupling aperture is arranged along the axis of main rectangular coaxial line is better, while therefore designing, preferentially arrange hollow tube coupling in coupling aperture be attached to main rectangular coaxial line sidewall or and secondary rectangular coaxial line sidewall.Further preferentially be set to: adjacent coupling aperture is positioned at a side of main rectangular coaxial line.
While according to the above-mentioned coupler of preferentially being arranged to, being coupled output, its course of work is: microwave is at first by main rectangular coaxial line, while locating in the structure Coupling hole, by coupling cavity, microwave coupling is arrived to secondary rectangular coaxial line, added close coupling under the effect of hollow tube coupling, make its directivity grow, further due to adjacent coupling aperture, be positioned at a side of main rectangular coaxial line; Therefore reinforcement can also further be coupled on the above-mentioned basis that adds close coupling.
Based on said structure, the utility model compared to its improvement of multi-hole directional coupler in the past is: traditional coupling aperture is improved to the coupling channel be comprised of coupling cavity and hollow tube coupling, wherein coupling cavity is arranged between main rectangular coaxial line and secondary rectangular coaxial line, the hollow tube coupling be attached to main rectangular coaxial line sidewall or and secondary rectangular coaxial line sidewall.Can increase its directivity like this.
Because the utility model adopts the design of a plurality of coupling apertures, there is the effect that coupling is strengthened between coupling aperture and coupling aperture, if the permutation and combination between coupling aperture and coupling aperture can not reach applicable arranging, can cause many unfavorable factors, such as coupling weakens phenomenon, we arrange and have done corresponding research it for this reason, for the volume that reduces whole coupling and the effect that reaches the coupling reinforcement, the further improvement of the utility model is: coupling aperture is arranged along the axis of main rectangular coaxial line, be positioned at a side of main rectangular coaxial bobbin thread along the adjacent coupling aperture of main rectangular coaxial line axis direction, along on main rectangular coaxial line axis direction, the hole of adjacent two coupling apertures in the heart apart from the guide wavelength in the central task frequency of main rectangular coaxial line 20% ~ 30% between.Be about to the side that adjacent coupling aperture is distributed in main rectangular coaxial bobbin thread successively.After adjacent coupling aperture distributes along main rectangular coaxial line one side, reinforcement can further be coupled, thereby further improve the directivity of the different multi-hole directional coupler of this major-minor rectangular coaxial linear dimension, the hole of the adjacent two coupling apertures influencing factor of distance is in the heart determined by input signal, in addition, because the coupling aperture in the utility model all is positioned at the same side of main rectangular coaxial line, therefore be compared to other arrangement mode, its small volume, as coupling aperture is arranged in both sides, with both sides, compare, the design volume of an obvious side is less than the design volume of both sides.
Based on above-mentioned improvement, for conveniently batch production, generally we do not limit the shape of coupling cavity, and the shape of restriction hollow tube coupling, the shape of hollow tube coupling can be circle, can be rectangle, ordinary priority consideration circle.
The utility model is made corresponding improvement for traditional coaxial line directional coupler, its improvement is: 1, by tradition, built-in coupling aperture is external, be about to after the position adjustment of coupling aperture make the hollow tube coupling be attached to main rectangular coaxial line sidewall or and secondary rectangular coaxial line sidewall on, the structure after improving can strengthen its directional performance; 2, by traditional single hole structure and the single hole architecture advances after above-mentioned improvement, be loose structure, generally with the coupling aperture more than 3 or 3, be identified as loose structure, after loose structure, be not only to accelerate to be limited, also to consider the state of arranging of coupling aperture when accelerating, the words of arranging arbitrarily likely can weaken its performance, and this and initial purpose of the present utility model are disagreed.Therefore, in order to reach the problem that strengthens directivity, the utility model adopts the coupling aperture more than 3 or 3, while arranging, ordinary priority takes into account that line interlacing arranges, distance between adjacent coupling aperture is determined by the wavelength of microwave, also can consider coupling aperture is arranged in simultaneously the same side of main rectangular coaxial bobbin thread, the distance between its adjacent coupled hole is also determined by the wavelength of output microwave.
The operation principle of multi-hole directional coupler can be described below:
Because can being similar to, the waveguide inwall regards the ideal conducting plane as.According to the boundary condition of alternating electromagnetic field, ideal conducting plane E only has the component perpendicular with surface, there is no tangential component; Magnetic field H only has the component tangent with surface, there is no normal component.The public broadside of the vertical major-minor rectangular coaxial line of main waveguide internal electric field, reach that a part of electric field that complementary wave leads still perpendicular to the public broadside of major-minor waveguide by aperture, and its power line forms an elbow.The closed curve that magnetic field (magnetic line of force) is parallel main Guide of Wide Wall, pierce into therefore the magnetic field of main waveguide (magnetic line of force) forms one group at the aperture place full curve that passes secondary rectangular coaxial line.
Entering by aperture that a part of electric field that complementary wave leads leads the coupling aperture both sides at complementary wave and is coupled out electric field E vertically downward
'.The electric field E of alternation
'inspire Induced magnetic field H
'(direction is determined by S=E*H).Electricity, magnetic field alternately excites, and forms respectively the electromagnetic wave to coupled end and isolation end output.
Entering by aperture that a part of magnetic field that complementary wave leads leads the coupling aperture both sides at complementary wave and is coupled out level magnetic field H to the right
'.The magnetic field H of alternation
'inspire the electric field E inducted
'.Electricity, magnetic field alternately excites, and forms respectively the electromagnetic wave to coupled end and isolation end output.
The aperture coupling is above-mentioned electric coupling and magnetic-coupled stack.The electromagnetic wave that two kinds of couplings are formed merges, and we can find out that the electromagnetic wave transmitted toward the coupled end direction superposes in the same way, form coupling output; Electromagnetic wave toward the transmission of isolation end direction oppositely superposes, and the formation of cancelling out each other isolation end, so be to export without coupling in principle.But, due to aperture electricity, magnetic-coupled asymmetry, both superpose and have produced directivity.
Multi-hole directional coupler utilizes a series of coupling apertures to form an array exactly, and several arrays can also stack up, and come thus the comprehensive degree of coupling and directional responses.Utilize the directivity of aperture and the directivity of array to superpose in coupled end, just can obtain better directivity, and this extra degree of freedom can also improve bandwidth.
The utility model has the advantage of that compact conformation, processing are simple, large, the super wide bandwidth of operation of power capacity, insertion loss be low, particularly at millimeter wave and terahertz wave band, with common multi-hole directional coupler, compares, and aspect filter with low insertion loss, has outstanding advantage.Compact of the present utility model is positioned at the electronic system that main rectangular coaxial line one side porous rectangular waveguide directional coupler is expected to be widely used in each microwave band and terahertz wave band.
The accompanying drawing explanation
Fig. 1 is stereogram when in the utility model, the adjacent coupled hole is positioned at main rectangular coaxial line one side.
The structural perspective that Fig. 2 is coupling aperture.
The vertical view that Fig. 3 is the utility model embodiment mono-.
The A-A profile that Fig. 4 is the utility model embodiment mono-.
The vertical view that Fig. 5 is the utility model embodiment bis-.
The vertical view that Fig. 6 is the utility model embodiment tri-.
The vertical view that Fig. 7 is the utility model embodiment tetra-.
The vertical view that Fig. 8 is the utility model embodiment five.
The vertical view that Fig. 9 is the utility model embodiment six.
Label in figure is expressed as respectively: 1, main rectangular coaxial line; 2, secondary rectangular coaxial line; 3, coupling aperture; 31, coupling cavity; 32, hollow tube coupling; 4, cylindrical metal body; 5, curved waveguide.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but the utility model execution mode is not limited to this.
As shown in Figure 1, 2, the multi-hole directional coupler that major-minor rectangular coaxial linear dimension is different, comprise as the main rectangular coaxial line 1 of microwave main channel with as the secondary rectangular coaxial line 2 of sampled signal passage and as the coupling aperture 3 of coupling channel; Main rectangular coaxial line 1 and secondary rectangular coaxial line 2 are isolated mutually; Coupling aperture 3 comprise be attached to main rectangular coaxial line 1 sidewall or and the hollow tube coupling 32 of secondary rectangular coaxial line 2 sidewalls, hollow tube coupling 32 is connected with the coupling cavity 31 of three end openings near the sidewall of main rectangular coaxial line 1, coupling cavity 31 and 32 conductings of hollow tube coupling, coupling cavity 31 between main rectangular coaxial line 1 and secondary rectangular coaxial line 2 and with main rectangular coaxial line 1 and 2 conductings of secondary rectangular coaxial line.Wherein, the number of coupling aperture 3 is 3; The projection of shape that coupling aperture 3 is overlooked direction at it is for circular, and the axis of the axis of main rectangular coaxial line 1 and secondary rectangular coaxial line 2 is parallel to each other.Coupling aperture 3 is arranged along the axis of main rectangular coaxial line 1, is positioned at a side of main rectangular coaxial line 1 axis along the adjacent coupling aperture of main rectangular coaxial line 1 axis direction; Along on main rectangular coaxial line 1 axis direction, the hole of adjacent two coupling apertures 3 in the heart apart from the guide wavelength of the central task frequency in the central task frequency of main rectangular coaxial line 1 23% ~ 27% between.
Because the utility model adopts the design of a plurality of coupling apertures, there is the effect that coupling is strengthened between coupling aperture and coupling aperture, if the permutation and combination between coupling aperture and coupling aperture can not reach applicable arranging, can cause many unfavorable factors, such as coupling weakens phenomenon, we arrange and have done corresponding research it for this reason, for the volume that reduces whole coupling and the effect that reaches the coupling reinforcement, the further improvement of the utility model is: coupling aperture is arranged along the axis direction of main rectangular coaxial line, be positioned at a side of main rectangular coaxial bobbin thread along the adjacent coupling aperture of main rectangular coaxial line axis direction, along on main rectangular coaxial line axis direction, the hole of adjacent two coupling apertures in the heart apart from the guide wavelength of main rectangular coaxial line 23% ~ 27% between.Adjacent coupling aperture is distributed in a side of main rectangular coaxial bobbin thread successively, after adjacent coupling aperture distributes along main rectangular coaxial line one side, reinforcement can further be coupled, thereby further improve the directivity of the different multi-hole directional coupler of this major-minor rectangular coaxial linear dimension, the hole of the adjacent two coupling apertures influencing factor of distance is in the heart determined by the input microwave, in addition, because the coupling aperture in the utility model all is positioned at the same side of main rectangular coaxial line, therefore be compared to other arrangement mode, its small volume, as coupling aperture is arranged in both sides, with both sides, compare, the design volume of an obvious side is less than the design volume of both sides.; Wherein the size Expressing of main rectangular coaxial line 1 is: a1*h1, the size Expressing of secondary rectangular coaxial line 2 is: a2*h2, a1, a2 are expressed as respectively the outer conductor width of main rectangular coaxial line 1 and secondary rectangular coaxial line 2, and h1, h2 are expressed as respectively the outer conductor height of main rectangular coaxial line 1 and secondary rectangular coaxial line 2;
The size situation of the size of main rectangular coaxial line 1 and secondary rectangular coaxial line 2 is as follows:
Situation A: when the size of main rectangular coaxial line is less than the size of secondary rectangular coaxial line,
H2*15%<h1<h2*85% or and a2*15%<a1<a2*85%;
Situation B: when the size of main rectangular coaxial line is greater than the size of secondary rectangular coaxial line,
H1*15%<h2<h1*85% or and a1*15%<a2<a1*85%;
Situation C: when the size of main rectangular coaxial line equals the size of secondary rectangular coaxial line,
A1=a2 and h1=h2.
During use, microwave, from main rectangular coaxial line 1 input, advances coupling in coupling aperture, microwave enters secondary rectangular coaxial line, carries out array arrangement because coupling aperture arranges the requirement that meets the enhancing coupling, therefore, will further strengthen coupling between coupling aperture, with this, reach and add close coupling.The compare coupled structure of single hole, the utility model adopts a plurality of coupling apertures to strengthen coupling and arranges, and can further improve its degree of coupling.
Compared to its improvement of multi-hole directional coupler in the past, be: traditional coupling aperture is improved to the coupling channel formed by coupling cavity 31 and hollow tube coupling 32, wherein coupling cavity 31 is arranged between main rectangular coaxial line 1 and secondary rectangular coaxial line 2 it, hollow tube coupling 32 be attached to main rectangular coaxial line 1 sidewall or and secondary rectangular coaxial line 2 sidewalls; Can increase its directivity like this.
Simultaneously, compared to its improvement of multi-hole directional coupler in the past, be: adopt the identical rectangular coaxial line structure to be improved to tradition and adopt the ordinary rectangular coaxial line structure, the size situation of the size of main rectangular coaxial line and secondary rectangular coaxial line is as follows:
Situation A: when the size of main rectangular coaxial line is less than the size of secondary rectangular coaxial line,
H2*15%<h1<h2*85% or and a2*15%<a1<a2*85%;
Situation B: when the size of main rectangular coaxial line is greater than the size of secondary rectangular coaxial line,
H1*15%<h2<h1*85% or and a1*15%<a2<a1*85%;
Situation C: when the size of main rectangular coaxial line equals the size of secondary rectangular coaxial line,
A1=a2 and h1=h2.
Can further increase its directivity like this.
Embodiment mono-
As Fig. 3, shown in 4, the present embodiment comprises and is provided with main rectangular coaxial line 1 and secondary rectangular coaxial line 2, and main rectangular coaxial line 1 is the microwave main channel, and secondary rectangular coaxial line 2 is the sampled signal passage; Main rectangular coaxial line 1 and secondary rectangular coaxial line 2 are isolated mutually, by 5 coupling apertures 3, are communicated with; The part of 5 coupling apertures 3 is beyond main rectangular coaxial line 1 and secondary rectangular coaxial line 2.The axis of described coupling aperture 3 is vertical with the axis of main rectangular coaxial line 1, its cross section be shaped as irregular polygon; Adjacent coupled hole 3 is positioned at a side of main rectangular coaxial line, along on main rectangular coaxial line 1 axis direction, the hole of adjacent two coupling apertures 3 in the heart apart from the guide wavelength of the central task frequency in the central task frequency of main rectangular coaxial line 1 23% ~ 27% between, added parallel with the axis of coupling aperture 3 and vertical with the axis of the main rectangular coaxial line 1 cylindrical metal body 4 of another axis in each coupling aperture 3, the cross section of this cylindrical metal body 4 be shaped as rectangle.
Embodiment bis-
As shown in Figure 5, the place different from embodiment mono-is to have 4 coupling apertures 3 to be positioned at the same side of main rectangular coaxial line, the hole in adjacent coupled hole 3 in the heart apart from the guide wavelength of the central task frequency in the central task frequency of main rectangular coaxial line 1 23% ~ 27% between, its coupling performance is better.4 of each cylindrical metal bodies connect and are positioned on the different azimuth of coupling aperture 3 with the inwall of corresponding coupling aperture 3 in a direction, and its particular location is determined by parameter optimizations such as directivity.
Embodiment tri-
As shown in Figure 6, the places different from embodiment mono-are, the two ends of secondary rectangular coaxial line 2 also are connected with curved waveguide 5, at the opposite side of curved waveguide 5, also are connected with the distribution structure with external world's coupling.Can facilitate like this being connected of this directional coupler and extraneous device, thereby it is better to obtain directivity, the porous rectangular waveguide directional coupler that bandwidth is wider.
Embodiment tetra-
As shown in Figure 7, the place different from embodiment one is that the cross section of coupling aperture 3 is ellipse, and all is provided with the cylindrical metal body 4 that shape of cross section is rectangle in coupling aperture 3.
Embodiment five
As shown in Figure 8, the place different from embodiment four is that the cross section of coupling aperture 3 is rectangle, and cylindrical metal body 4 is not set in coupling aperture 3.
Embodiment six
As shown in Figure 9, different from embodiment five is that the cross section of coupling aperture 3 is triangle.
Just can realize preferably the utility model as mentioned above.
Claims (4)
1. the different multi-hole directional coupler of major-minor rectangular coaxial linear dimension is characterized in that: comprise main rectangular coaxial line (1) that mutual isolation and structure are consistent and secondary rectangular coaxial line (2) and as the coupling aperture (3) of coupling channel, wherein main rectangular coaxial line (1) and secondary rectangular coaxial line (2) are all to consist of rectangular waveguide and the built-in conductor be arranged in rectangular waveguide, have added parallel with the axis of coupling aperture (3) and vertical with main rectangular coaxial line (1) the axis cylindrical metal body (4) of another axis in wherein said coupling aperture (3), one end of this cylindrical metal body (4) connects with the inwall of corresponding coupling aperture (3), the cross section of this cylindrical metal body (4) be shaped as polygon, main rectangular coaxial line (1) is communicated with secondary rectangular coaxial line (2) by least 3 coupling apertures (3), at least 1 coupling aperture (3) comprise be attached to main rectangular coaxial line (1) sidewall or and the hollow tube coupling (32) of secondary rectangular coaxial line (2) sidewall, hollow tube coupling (32) is connected with the coupling cavity (31) of three end openings near the sidewall of main rectangular coaxial line (1), coupling cavity (31) and hollow tube coupling (32) conducting, coupling cavity (31) be positioned between main rectangular coaxial line (1) and secondary rectangular coaxial line (2) and with main rectangular coaxial line (1) and secondary rectangular coaxial line (2) conducting, described coupling aperture (3) is arranged along the axis direction of main rectangular coaxial line (1), and along main rectangular coaxial line (1) axis direction, adjacent coupling aperture (3) is positioned at a side of main rectangular coaxial line (1) axis, along on main rectangular coaxial line (1) axis direction, the hole of adjacent two coupling apertures (3) in the heart apart from the guide wavelength of main rectangular coaxial line (1) 20% ~ 30% between,
The size Expressing of main rectangular coaxial line (1) is: a1*h1, the size Expressing of secondary rectangular coaxial line (2) is: a2*h2, a1, a2 are expressed as respectively the width of main rectangular coaxial line (1) and secondary rectangular coaxial line (2) outer conductor, and h1, h2 are expressed as respectively the height of main rectangular coaxial line (1) and secondary rectangular coaxial line (2) outer conductor;
The size situation of the size of main rectangular coaxial line (1) and secondary rectangular coaxial line (2) is as follows:
Situation A: when the size of main rectangular coaxial line (1) is less than the size of secondary rectangular coaxial line (2),
H2*15%<h1<h2*85% or and a2*15%<a1<a2*85%;
Situation B: when the size of main rectangular coaxial line (1) is greater than the size of secondary rectangular coaxial line (2),
H1*15%<h2<h1*85% or and a1*15%<a2<a1*85%;
Situation C: when the size of main rectangular coaxial line (1) equals the size of secondary rectangular coaxial line (2),
A1=a2 and h1=h2.
2. the different multi-hole directional coupler of major-minor rectangular coaxial linear dimension according to claim 1, it is characterized in that: the projection of shape that coupling aperture (3) is overlooked on direction at it is circle, the projection of shape that coupling cavity (31) is overlooked on direction at it is semicircle, and the projection of shape that hollow tube coupling (32) is overlooked on direction at it is semicircle.
3. the different multi-hole directional coupler of major-minor rectangular coaxial linear dimension according to claim 2 is characterized in that: described cylindrical metal body (4) part extends into the inside of main rectangular coaxial line (1).
4. the different multi-hole directional coupler of major-minor rectangular coaxial linear dimension according to claim 1, it is characterized in that: the axis of the axis of the built-in conductor of described main rectangular coaxial line (1) and the built-in conductor of secondary rectangular coaxial line (2) is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393960 CN202817153U (en) | 2012-08-10 | 2012-08-10 | Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393960 CN202817153U (en) | 2012-08-10 | 2012-08-10 | Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817153U true CN202817153U (en) | 2013-03-20 |
Family
ID=47875977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220393960 Expired - Fee Related CN202817153U (en) | 2012-08-10 | 2012-08-10 | Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202817153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800913A (en) * | 2012-08-10 | 2012-11-28 | 成都赛纳赛德科技有限公司 | Porous directional coupler with different main and sub rectangular coaxial line sizes |
-
2012
- 2012-08-10 CN CN 201220393960 patent/CN202817153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800913A (en) * | 2012-08-10 | 2012-11-28 | 成都赛纳赛德科技有限公司 | Porous directional coupler with different main and sub rectangular coaxial line sizes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202678497U (en) | Multi-hole directional coupler with main and auxiliary ridge waveguides different in size | |
| CN203225326U (en) | Porous directional coupler provided with main rectangular waveguide and auxiliary rectangular waveguide having different sizes | |
| CN202817153U (en) | Multi-hole directional coupler provided with main/auxiliary rectangular coaxial lines of different sizes | |
| CN102790256B (en) | Porous directional coupler with main and assistant ridge waveguides in different sizes | |
| CN202678496U (en) | Multi-hole directional coupler positioned on one side of main rectangular coaxial line | |
| CN102800914B (en) | Porous ridge waveguide directional couplers with different dimensions | |
| CN202678489U (en) | Directional coupler with main and auxiliary ridge waveguides different in size | |
| CN102780056B (en) | Directional coupler with main and auxiliary rectangular coaxial lines | |
| CN202695690U (en) | A multi-hole directional coupler for a rectangular waveguide with coupling holes positioned on one side of a main rectangular waveguide | |
| CN102810710B (en) | Directional coupler with master ridge waveguide and slave ridge waveguide | |
| CN202678491U (en) | Multi-hole microtrip directional coupler with coupling holes distributed in staggered manner | |
| CN102810711B (en) | Rectangular porous waveguide directional coupler with cross distributed coupling holes | |
| CN202695691U (en) | A multi-hole directional coupler for a rectangular coaxial line with coupling holes distributed in an interlacing manner | |
| CN202839931U (en) | Directional coupler with rectangular coaxial lines | |
| CN202737080U (en) | Porous ridge waveguide directional coupler located at one side of main ridge waveguide | |
| CN202737079U (en) | Porous ridge waveguide directional couplers with different dimensions | |
| CN202678490U (en) | Multi-hole ridge waveguide directional coupler with coupling holes distributed in staggered manner | |
| CN102800913B (en) | Porous directional coupler with different main and sub rectangular coaxial line sizes | |
| CN202678492U (en) | Multi-hole microtrip directional coupler positioned on one side of main microtrip | |
| CN202678493U (en) | Size-variable multi-hole rectangular waveguide directional coupler | |
| CN202695692U (en) | A multi-hole directional coupler for a rectangular waveguide with coupling holes distributed in an interlacing manner | |
| CN102810713B (en) | Multi-hole directional coupler located on one side of major rectangular coaxial line | |
| CN202678494U (en) | Directional coupler with main and auxiliary rectangular coaxial lines different in size | |
| CN102780059A (en) | Porous microstrip directional coupler on main microstrip side | |
| CN102780060B (en) | Porous rectangular waveguide directional coupler with different size |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140810 |
|
| EXPY | Termination of patent right or utility model |