CN102790255B - Directional coupler with different-sized main rectangular waveguide and auxiliary rectangular waveguide - Google Patents
Directional coupler with different-sized main rectangular waveguide and auxiliary rectangular waveguide Download PDFInfo
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- CN102790255B CN102790255B CN201210282617.8A CN201210282617A CN102790255B CN 102790255 B CN102790255 B CN 102790255B CN 201210282617 A CN201210282617 A CN 201210282617A CN 102790255 B CN102790255 B CN 102790255B
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Abstract
The invention discloses a directional coupler with different-sized main rectangular waveguide and auxiliary rectangular waveguide, and the directional coupler comprises the main rectangular waveguide which is used as a microwave main passage and the auxiliary rectangular waveguide which is used as a sampling signal passage as well as coupling holes which are used as a coupling passage; a master mode H surface of the main rectangular waveguide is parallel to a master mode H surface of the auxiliary rectangular waveguide, and the main rectangular waveguide and the auxiliary rectangular waveguide are mutually isolated from each other; the main rectangular waveguide is communicated with the auxiliary rectangular waveguide through one or two coupling holes, at least one coupling hole comprises a hollow coupling pipe which is adhered onto the side wall of the main rectangular waveguide or\and the side wall of the auxiliary rectangular waveguide, the hollow coupling pipe is connected with a coupling cavity with three ends being opened, which is close to the side wall of the rectangular waveguide, the coupling cavity is conducted with the hollow coupling pipe, and the coupling cavity is arranged between the main rectangular waveguide and the auxiliary rectangular waveguide and is conducted with the main and the auxiliary rectangular waveguide. The directional coupler has advantages of compactness in structure and low insertion loss. Compared with an ordinary single-hole directional coupler, the directional coupler has salient strength on the aspect of the low insertion loss.
Description
Technical field
The present invention relates to the directional coupler of major-minor rectangular waveguide, specifically, relate to a kind of directional coupler that utilizes the major-minor rectangular waveguide that single hole or diplopore 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 structure directional coupler, widely different, but from their coupling mechanism, be mainly divided into four kinds, 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 mostly also is Waveguide Hole coupling directional coupler; Its theoretical foundation is Bethe slot-coupling theory, and the people such as Cohn and Levy have also done a lot of contributions.
Development along with aerospace technology, require microwave circuit and system to accomplish miniaturization, lightweight and dependable performance, so there is strip line and microstrip line, in succession there is again the microwave integrated transmission-lines such as fin line, the line of rabbet joint, co-planar waveguide and coplanar stripline in the needs due to microwave circuit and system subsequently, so just occurred various transmission line directional couplers.
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 in narrow bandwidth, directivity, only suitable in the work of design frequency place, drift out this frequency, and directivity will reduce.
Although tradition multi-hole directional coupler can be accomplished very wide bandwidth, also exists some shortcomings, as large in volume, requirement on machining accuracy is high, insertion loss is high, particularly at 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 Inversion Efficiency of Metal-Ceramic Waveguide directional coupler that can overcome these shortcomings.
Summary of the invention
The object of the invention is to overcome some shortcomings of traditional directional coupler, the directional coupler of a kind of compact, major-minor rectangular waveguide that insertion loss is low is provided.
To achieve these goals, the technical solution used in the present invention is as follows: the directional coupler of major-minor rectangular waveguide, comprises as the main rectangular waveguide of microwave main channel with as the secondary rectangular waveguide of sampled signal passage and as the coupling aperture of coupling channel; The main mould H face of the main mould H face of main rectangular waveguide and secondary rectangular waveguide is parallel to each other, and main rectangular waveguide and secondary rectangular waveguide are isolated mutually; Main rectangular waveguide is communicated with secondary rectangular waveguide by 1 or 2 coupling apertures, at least 1 coupling aperture comprise be attached to main rectangular waveguide sidewall or and the hollow tube coupling of secondary rectangular waveguide sidewall, hollow tube coupling is connected with the coupling cavity of three end openings near the sidewall of main rectangular waveguide, coupling cavity and the conducting of hollow tube coupling, coupling cavity between main rectangular waveguide and secondary rectangular waveguide and with main rectangular waveguide and secondary rectangular waveguide conducting
;
The size Expressing of main rectangular waveguide is: a1*h1, and the size Expressing of secondary rectangular waveguide is: a2*h2, a1, a2 are expressed as the width of main rectangular waveguide and secondary rectangular waveguide, and h1, h2 are expressed as the height of main rectangular waveguide and secondary rectangular waveguide;
The size situation of the size of main rectangular waveguide and secondary rectangular waveguide is as follows:
situation A:when the size of main rectangular waveguide is less than the size of secondary rectangular waveguide,
H2*10% < h1 < h2*80% or and a2*10% < a1 < a2*80%;
situation B:when the size of main rectangular waveguide is greater than the size of secondary rectangular waveguide,
H1*10% < h2 < h1*80% or and a1*10% < a2 < a1*80%;
situation C:when the size of main rectangular waveguide equals the size of secondary rectangular waveguide,
A1=a2 and h1=h2.
The projection of shape that coupling aperture is overlooked direction at it is circle or polygon.
In described coupling aperture, be provided with the cylindrical metal body that axis is vertical with the main mould H face of main rectangular waveguide.
The cross section of this cylindrical metal body be shaped as polygon, preferentially select rectangle.
Angle between the axis of described main rectangular waveguide and the axis of secondary rectangular waveguide is between 10 ° to 170 °.
The number of described coupling aperture is 2 o'clock, and the center of two coupling apertures lays respectively at main rectangular waveguide and after overlooking direction projection, intersects near two relative summits of the parallelogram forming with secondary rectangular waveguide.
Described main rectangular waveguide or and the one or both ends of secondary rectangular waveguide be also connected with curved waveguide.
Described main rectangular waveguide Huo and secondary rectangular waveguide are connected with the matching structure with extraneous device matching in its one or both ends.
Based on said structure, the present invention compared to its improvement of single-hole directional coupler is in the past: adopt standard rectangular waveguiding structure to be improved to tradition and adopt normal rectangular waveguide structure, the size situation of the size of main rectangular waveguide and secondary rectangular waveguide is as follows:
situation A:when the size of main rectangular waveguide is less than the size of secondary rectangular waveguide,
H2*10% < h1 < h2*80% or and a2*10% < a1 < a2*80%,
situation B:when the size of main rectangular waveguide is greater than the size of secondary rectangular waveguide,
H1*10% < h2 < h1*80% or and a1*10% < a2 < a1*80%,
situation C:when the size of main rectangular waveguide equals the size of secondary rectangular waveguide,
A1=a2 and h1=h2.
The above-mentioned three kinds of different situations of selection of dimension when main rectangular waveguide and secondary rectangular waveguide, can obtain three kinds of different results.In the past people be all the rectangular waveguide of preferential choice criteria as the transmission channel of guide directional coupler, but when selecting situation A or situation B, at millimere-wave band and terahertz wave band, we can obtain filter with low insertion loss, the better directional coupler of directivity.Namely this extra degree of freedom can help us to design the better directional coupler of directivity.
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 rectangle or the triangle of the simple and easy batch production of energy.
The general axis of main rectangular waveguide and the angle between the axis of secondary rectangular waveguide are between 10 ° to 170 °.For the volume of its whole coupler is reduced, we pay the utmost attention to the axis of main rectangular waveguide and the axis of secondary rectangular waveguide be arranged in parallel.Meanwhile, the angular dimension between the axis of main rectangular waveguide and the axis of secondary rectangular waveguide is determined through improving according to indexs such as the degree of coupling of this directional coupler, directivity and bandwidth of operation.
When the number of coupling aperture is 1, compare single hole coupler in the past, by hollow tube coupling be attached to main rectangular waveguide or and the sidewall of secondary rectangular waveguide, performance is significantly improved, when the number of coupling aperture increases to 2, can further improve its directivity, now we need to make the field in 2 coupling apertures strengthen and could improve its directivity in coupled end stack.
Due to traditional single-hole directional coupler, the size of main rectangular waveguide and secondary rectangular waveguide all adopts standard waveguide size, and simultaneously the coupling aperture in traditional single-hole directional coupler is positioned at main rectangular waveguide and secondary rectangular waveguide along within the projection of coupling aperture axis direction along the projection of its axis direction.And improvement of the present invention is: 1, the position of traditional coupling aperture is adjusted, design accordingly and the coupling aperture of adjusting rear structure and matching, be that coupling aperture in the present invention is comprised of coupling cavity and hollow tube coupling, wherein during setting position, coupling cavity is arranged between main rectangular waveguide and secondary rectangular waveguide, in order to be communicated with main rectangular waveguide and secondary rectangular waveguide, owing to being also provided with hollow tube coupling, can strengthen further coupling; 2, the present invention can also increase an above-mentioned coupling aperture consisting of coupling cavity and hollow tube coupling on the basis of existing single-hole directional coupler, or directly increase by two coupling apertures after improvement, replace original coupling aperture, the coupling between waveguide is enhanced.3, because experiment is found, when we adopt the main rectangular waveguide of common waveguiding structure and secondary rectangular waveguide and design, the directivity of common waveguiding structure is than the good directionality of standard waveguide structure, therefore, the main rectangular waveguide adopting in the present invention and secondary rectangular waveguide all do not adopt standard size or one to adopt standard size, one not adopt standard size aspect size, aspect size, adjust the directivity of increase coupler that can be extra.
Therefore, while designing, two coupling apertures are preferentially set, and the hollow tube coupling in coupling aperture to be attached to main rectangular waveguide sidewall or and secondary rectangular waveguide sidewall.Further preferentially be set to: the size of main rectangular waveguide and secondary rectangular waveguide does not all adopt standard size.
While being coupled output according to the above-mentioned coupler of being preferentially arranged to, its course of work is: microwave is first by main rectangular waveguide, while locating in structure Coupling hole, by coupling cavity, microwave coupling is arrived to secondary rectangular waveguide, under the effect of hollow tube coupling, add close coupling, make its directivity grow, further the size due to main rectangular waveguide and secondary rectangular waveguide adopts off-standard size; Therefore reinforcement can also further be coupled on the above-mentioned basis that adds close coupling.
While increasing cylindrical metal body, described coupling aperture 3 is Y-shaped or cross and other starlike more than 4 branches in the projection of shape of overlooking direction.
As further improvement, coupling aperture in the present invention comprise be attached to main rectangular waveguide sidewall or and the hollow tube coupling of secondary rectangular waveguide sidewall, hollow tube coupling is connected with the coupling cavity of three end openings near the sidewall of rectangular waveguide, coupling cavity and the conducting of hollow tube coupling
.
Wherein above-mentioned H face is magnetic field face.
The operation principle of guide directional coupler can be described below:
Because waveguide inwall can be similar to, regard 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 waveguide of main waveguide internal electric field, reaches that a part of electric field that complementary wave leads still vertical and the public broadside of major-minor waveguide, an elbow of its power line formation by aperture.Magnetic field (magnetic line of force) is for being parallel to the closed curve of main Guide of Wide Wall, therefore the magnetic field of main waveguide (magnetic line of force) forms one group at aperture place, pierces into and passes the full curve that complementary wave is led.
By aperture, entering that a part of electric field that complementary wave leads leads 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.
By aperture, entering that a part of magnetic field that complementary wave leads leads 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 inducting
', electricity, magnetic field alternately excites, and forms respectively the electromagnetic wave to coupled end and isolation end output.
Aperture coupling is above-mentioned electric coupling and magnetic-coupled stack, and the electromagnetic wave two kinds of couplings being formed merges, and we can find out that the electromagnetic wave of past coupled end direction transmission superposes in the same way, forms coupling output; The electromagnetic wave transmitting toward isolation end direction oppositely superposes, and cancels out each other and forms isolation, so be to export without coupling in principle; But due to aperture electricity, magnetic-coupled asymmetry, both superpose and have produced directivity.
The invention has the advantages that: compact conformation, processing are simply, power capacity is large, insertion loss is low.Particularly, at millimeter wave and terahertz wave band, compare with common single-hole directional coupler, aspect the degree of coupling and directivity, there is outstanding advantage.The directional coupler of compact major-minor rectangular waveguide of the present invention is expected to be widely used in the electronic system of each microwave band and terahertz wave band, particularly military affairs and the civil area such as radar, missile guidance, communication.
Accompanying drawing explanation
Fig. 1 is the axis of main rectangular waveguide and the stereogram of the axis of secondary rectangular waveguide when parallel in the present invention.
Fig. 2 is the structural perspective of coupling aperture.
Fig. 3 is the vertical view of the embodiment of the present invention one.
Fig. 4 is the transmission curve of the main rectangular waveguide that obtains according to embodiment one coupled end and isolation end when different with secondary rectangular waveguide width.
Fig. 5 is the vertical view of the embodiment of the present invention two.
Fig. 6 is A-A profile in the embodiment of the present invention two.
Fig. 7 is the vertical view of the embodiment of the present invention three.
Fig. 8 is the vertical view of the embodiment of the present invention four.
The vertical view of Fig. 9 embodiment of the present invention five.
Label in figure is expressed as: 1, main rectangular waveguide; 2, secondary rectangular waveguide; 3, coupling aperture; 31, coupling cavity; 32, hollow tube coupling; 7, cylindrical metal body; 4, curved waveguide; 5, rectangular waveguide.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiment of the present invention is not limited to this.
As shown in Figure 1, 2, the directional coupler of major-minor rectangular waveguide, comprises as the main rectangular waveguide 1 of microwave main channel with as the secondary rectangular waveguide 2 of sampled signal passage and as the coupling aperture 3 of coupling channel; The main mould H face of the main mould H face of main rectangular waveguide 1 and secondary rectangular waveguide 2 is parallel to each other, and main rectangular waveguide 1 and secondary rectangular waveguide 2 are isolated mutually, and main rectangular waveguide is communicated with secondary rectangular waveguide by 1 coupling aperture; Main rectangular waveguide 1 is different with the size of secondary rectangular waveguide 2, and the size situation of the size of main rectangular waveguide and secondary rectangular waveguide is as follows:
situation A:when the size of main rectangular waveguide is less than the size of secondary rectangular waveguide,
H2*10% < h1 < h2*80% or and a2*10% < a1 < a2*80%;
situation B:when the size of main rectangular waveguide is greater than the size of secondary rectangular waveguide,
H1*10% < h2 < h1*80% or and a1*10% < a2 < a1*80%;
situation C:when the size of main rectangular waveguide equals the size of secondary rectangular waveguide,
A1=a2 and h1=h2.
Coupling aperture 3 comprise be attached to main rectangular waveguide 1 sidewall or and the hollow tube coupling 32 of secondary rectangular waveguide 2 sidewalls, hollow tube coupling 32 is connected with the coupling cavity 31 of three end openings near the sidewall of rectangular waveguide 1, coupling cavity 31 and 32 conductings of hollow tube coupling, coupling cavity 31 between main rectangular waveguide 1 and secondary rectangular waveguide 2 and with main rectangular waveguide 1 and 2 conductings of secondary rectangular waveguide
.the projection of shape that wherein coupling aperture 3 is overlooked direction at it is for circular, and the axis of the axis of main rectangular waveguide 1 and secondary rectangular waveguide 2 is parallel to each other.
Embodiment mono-
As shown in Figure 3, the directional coupler of major-minor rectangular waveguide, comprises as the main rectangular waveguide 1 of microwave main channel with as the secondary rectangular waveguide 2 of sampled signal passage and as the coupling aperture 3 of coupling channel; The main mould H face of the main mould H face of main rectangular waveguide 1 and secondary rectangular waveguide 2 is parallel to each other, and main rectangular waveguide 1 and secondary rectangular waveguide 2 are isolated mutually, and main rectangular waveguide is communicated with secondary rectangular waveguide 2 by 1 coupling aperture; The part of coupling aperture 3 is attached to the sidewall of secondary rectangular waveguide 2, and the width a2 of secondary rectangular waveguide 2 meets: a1*10% < a2 < a1*80%, and wherein a1 is the width of main rectangular waveguide 1; The two ends of main rectangular waveguide 1 and secondary rectangular waveguide 2 are all connected with the matching structure mating with the external world; Between main rectangular waveguide 1 and the axis of secondary rectangular waveguide 2, be 45 ° of angles.
For the superiority that the present invention has is described fully, following experimental data is now disclosed: specific experiment data as shown in Figure 4, the experimental data of gained Fig. 4 is the experimental data generating according to the design of Fig. 3 in the present invention, compare with existing single-hole directional coupler, except the position difference of coupling aperture and the size difference of major-minor rectangular waveguide, all the other conditions are all consistent; Fig. 4 is the transmission curve of coupled end and the isolation end when different with secondary rectangular waveguide width of main rectangular waveguide after improving, and the port S3.1 in Fig. 4 is coupled end, and port S4.1 is isolation end.According to formula, wherein I is isolation, and C is the degree of coupling, and D is directivity index, and we can calculate in frequency is that the good directionality of the directional coupler of this major-minor rectangular waveguide within the scope of the GHz of 125GHz ~ 155 is in-24dB.And before improvement, we calculate in frequency is the be worse than-14dB of directivity of this rectangular waveguide directional coupler within the scope of 125GHz ~ 155GHz.
Before improving and after improving, compare, from the difference of experiment condition, be: the coupling aperture improving in the present invention by coupling cavity, formed with the hollow tube coupling that is attached to main rectangular waveguide sidewall and main rectangular waveguide different with secondary rectangular waveguide width, and only have the measure-alike of coupling aperture and major-minor rectangular waveguide before improvement.
As can be seen from above, the design of the present invention before designing coupler and being obviously better than improving on directional performance.
Compared to its improvement of single-hole directional coupler in the past, be: traditional coupling aperture is improved to the coupling channel being formed by coupling cavity 31 and hollow tube coupling 32, wherein coupling cavity 31 is arranged between main rectangular waveguide 1 and secondary rectangular waveguide 2 it, hollow tube coupling 32 be attached to main rectangular waveguide 1 sidewall or and secondary rectangular waveguide 2 sidewalls; Can increase its directivity like this.
Meanwhile, compared to its improvement of single-hole directional coupler in the past, be: adopt standard rectangular waveguiding structure to be improved to tradition and adopt normal rectangular waveguide structure, the size situation of the size of main rectangular waveguide and secondary rectangular waveguide is as follows:
situation A:when the size of main rectangular waveguide is less than the size of secondary rectangular waveguide,
H2*10% < h1 < h2*80% or and a2*10% < a1 < a2*80%;
situation B:when the size of main rectangular waveguide is greater than the size of secondary rectangular waveguide,
H1*10% < h2 < h1*80% or and a1*10% < a2 < a1*80%;
situation C:when the size of main rectangular waveguide equals the size of secondary rectangular waveguide,
A1=a2 and h1=h2.
Embodiment bis-
As shown in Figure 5,6, the place different from embodiment mono-is the cylindrical metal body 7 that adds another axis vertical with the main mould H face of main rectangular waveguide 1 in coupling aperture 3, the cross section of this cylindrical metal body 7 be shaped as rectangle, can obtain so the better directional coupler of directivity.And the two ends of main rectangular waveguide 1 and secondary rectangular waveguide 2 all do not have to be connected and the extraneous matching structure mating.
Embodiment tri-
As shown in Figure 7, the place different from embodiment bis-is between main rectangular waveguide 1 and the axis of secondary rectangular waveguide 2 to be parallel, there is no angle.Coupling aperture 3 all only has part in main rectangular waveguide 1 and secondary rectangular waveguide 2 the insides, and some outside.Cylindrical metal body 7 is not set in coupling aperture 3.
Embodiment tetra-
As shown in Figure 8, the place different from embodiment bis-is by two coupling apertures 3, to be communicated with between main rectangular waveguide 1 and secondary rectangular waveguide 2, and the center of two coupling apertures 3 lays respectively near two relative summits of main rectangular waveguide 1 and the secondary rectangular waveguide 2 crossing parallelogram that form.
Embodiment five
As shown in Figure 9, the place different from embodiment tetra-is that main rectangular waveguide 1 and 2 of secondary rectangular waveguides are communicated with by a coupling aperture 3, at the two ends of main rectangular waveguide 1, there is the transition of curved waveguide 4, can obtain like this that directivity is better, the wider guide directional coupler of bandwidth, at the other end of curved waveguide 4, connect rectangular waveguide 5.
Just can realize preferably the present invention as mentioned above.
Claims (8)
1. the directional coupler of major-minor rectangular waveguide, is characterized in that: comprise as the main rectangular waveguide (1) of microwave main channel with as the secondary rectangular waveguide (2) of sampled signal passage and as the coupling aperture (3) of coupling channel, the main mould H face of the main mould H face of main rectangular waveguide (1) and secondary rectangular waveguide (2) is parallel to each other, and main rectangular waveguide (1) and secondary rectangular waveguide (2) are isolated mutually, main rectangular waveguide (1) is communicated with secondary rectangular waveguide (2) by 1 or 2 coupling apertures (3), at least 1 coupling aperture (3) comprise be attached to main rectangular waveguide (1) sidewall or and the hollow tube coupling (32) of secondary rectangular waveguide (2) sidewall, hollow tube coupling (32) is connected with the coupling cavity (31) of three end openings near the sidewall of main rectangular waveguide (1), coupling cavity (31) and hollow tube coupling (32) conducting, coupling cavity (31) be positioned between main rectangular waveguide (1) and secondary rectangular waveguide (2) and with main rectangular waveguide (1) and secondary rectangular waveguide (2) conducting,
The size Expressing of main rectangular waveguide (1) is: a1*h1, the size Expressing of secondary rectangular waveguide (2) is: a2*h2, a1, a2 are expressed as the width of main rectangular waveguide (1) and secondary rectangular waveguide (2), and h1, h2 are expressed as the height of main rectangular waveguide (1) and secondary rectangular waveguide (2);
The size situation of the size of main rectangular waveguide (1) and secondary rectangular waveguide (2) is as follows:
Situation A: when the size of main rectangular waveguide (1) is less than the size of secondary rectangular waveguide (2),
H2*10% < h1 < h2*80% or and a2*10% < a1 < a2*80%;
Situation B: when the size of main rectangular waveguide (1) is greater than the size of secondary rectangular waveguide (2),
H1*10% < h2 < h1*80% or and a1*10% < a2 < a1*80%;
Situation C: when the size of main rectangular waveguide (1) equals the size of secondary rectangular waveguide (2),
A1=a2 and h1=h2.
2. the directional coupler of major-minor rectangular waveguide according to claim 1, is characterized in that: the angle between the axis of described main rectangular waveguide (1) and the axis of secondary rectangular waveguide (2) is between 10 ° to 170 °.
3. the directional coupler of major-minor rectangular waveguide according to claim 1, is characterized in that: in described coupling aperture (3), be provided with the cylindrical metal body (7) that axis is vertical with the main mould H face of main rectangular waveguide (1).
4. the directional coupler of major-minor rectangular waveguide according to claim 1, is characterized in that: the projection of shape that coupling aperture (3) is overlooked direction at it is circle or polygon.
5. the directional coupler of major-minor rectangular waveguide according to claim 3, is characterized in that: the cross section of this cylindrical metal body (7) be shaped as rectangle.
6. the directional coupler of major-minor rectangular waveguide according to claim 1, it is characterized in that: the number of described coupling aperture (3) is 2 o'clock, the hole heart of two coupling apertures (3) lays respectively at main rectangular waveguide (1) and after overlooking direction projection, intersects near two relative summits of the parallelogram forming with secondary rectangular waveguide (2).
7. according to the directional coupler of the major-minor rectangular waveguide described in any one in claim 1-6, it is characterized in that: the one or both ends of described main rectangular waveguide (1) are also connected with curved waveguide (4).
8. according to the directional coupler of the major-minor rectangular waveguide described in any one in claim 1-6, it is characterized in that: described main rectangular waveguide (1) Huo and secondary rectangular waveguide (2) are connected with the matching structure with extraneous device matching in its one or both ends.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282617.8A CN102790255B (en) | 2012-08-10 | 2012-08-10 | Directional coupler with different-sized main rectangular waveguide and auxiliary rectangular waveguide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282617.8A CN102790255B (en) | 2012-08-10 | 2012-08-10 | Directional coupler with different-sized main rectangular waveguide and auxiliary rectangular waveguide |
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| CN102790255B true CN102790255B (en) | 2014-08-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190101A (en) * | 1982-04-30 | 1983-11-07 | Nec Corp | Directional coupler |
| JPS58205301A (en) * | 1982-05-25 | 1983-11-30 | Nippon Telegr & Teleph Corp <Ntt> | Directional filter |
| JPH04150401A (en) * | 1990-10-12 | 1992-05-22 | Japan Atom Energy Res Inst | Mode-coupled type directional coupler |
| US5407905A (en) * | 1993-10-13 | 1995-04-18 | Das; Satyendranath | High Tc superconducting high power couplers |
| KR20010108549A (en) * | 2000-05-29 | 2001-12-08 | 송재인 | Waveguide directional coupler |
| CN202678498U (en) * | 2012-08-10 | 2013-01-16 | 成都赛纳赛德科技有限公司 | Directional coupler with main and auxiliary rectangular waveguides different in size |
-
2012
- 2012-08-10 CN CN201210282617.8A patent/CN102790255B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190101A (en) * | 1982-04-30 | 1983-11-07 | Nec Corp | Directional coupler |
| JPS58205301A (en) * | 1982-05-25 | 1983-11-30 | Nippon Telegr & Teleph Corp <Ntt> | Directional filter |
| JPH04150401A (en) * | 1990-10-12 | 1992-05-22 | Japan Atom Energy Res Inst | Mode-coupled type directional coupler |
| US5407905A (en) * | 1993-10-13 | 1995-04-18 | Das; Satyendranath | High Tc superconducting high power couplers |
| KR20010108549A (en) * | 2000-05-29 | 2001-12-08 | 송재인 | Waveguide directional coupler |
| CN202678498U (en) * | 2012-08-10 | 2013-01-16 | 成都赛纳赛德科技有限公司 | Directional coupler with main and auxiliary rectangular waveguides different in size |
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| CN102790255A (en) | 2012-11-21 |
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