CN103094654A - Double beam integrated feed network - Google Patents
Double beam integrated feed network Download PDFInfo
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- CN103094654A CN103094654A CN2013100531824A CN201310053182A CN103094654A CN 103094654 A CN103094654 A CN 103094654A CN 2013100531824 A CN2013100531824 A CN 2013100531824A CN 201310053182 A CN201310053182 A CN 201310053182A CN 103094654 A CN103094654 A CN 103094654A
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Abstract
The invention provides a double beam integrated feed network, wherein amplitude phase error of the feed network is easy to control and the feed network is small in debugging workload, high in reliability and low in cost. The technical scheme includes that 12 routes of input signals of E1, E2...E12 are equally divided into two routes of signals through 12 2-equal power dividers. One route composes E gamma 1 through a 12-unequal power divider circuit board (1), and after phase delay is carried out, composition is carried out on the other route of the signals through a 12-unequal power divider circuit board (2), and each delay phase is composed to E gamma 2 in sequence. Physical vertical connection structures among the 12-unequal power divider circuit board (1), the 12-unequal power divider circuit board (2), the twelve 2-equal power dividers (3) and two output adaptors (4) is achieved by adopting a coaxial cable and micro-strip translation method, the 12-unequal power divider circuit board (1), the 12-unequal power divider circuit board (2), the twelve 2-equal power dividers (3) and the two output adaptors (4) are all integrated inside a feed network case seat (6).
Description
Technical field
The present invention relates to a kind of integrated feeding network of dualbeam that is applied to phased array antenna.
Background technology
The dualbeam feeding network is widely used in the dualbeam receiving system of phased array antenna, forms simultaneously two different received beams that point to, and one of them beam position is the antenna array normal direction, and another wave beam departs from the antenna array normal direction.Usually in the dualbeam feeding network, 2 power splitters such as grade and 12 do not wait power splitter to split placement, design respectively, and 2 power splitters such as grade and 12 do not wait and adopt radio frequency cable to connect between power splitter.The implementation method of dualbeam can be brought the problem of following several respects like this: place the required structure space of whole feeding network very large; Because 2 power splitters such as grade and 12 do not wait the cable between power splitter, strict phase place requirement is not arranged, cause cable processing more difficult, cable cost is very high; Phase error is not easy to control; Debugging work is very large; Because stube cable is a lot, reliability is very low; It is very high that whole dualbeam receives the feeding network cost.
Summary of the invention
Task of the present invention is the defective that, phase error very large for the required structure space of common double wave beam feeding network is not easy to control, debugging work load is large, reliability is low, cost is high, proposing a kind of amplitude-phase error is easy to control, debugging work load is little, reliability is high, the integrated feeding network of the dualbeam that cost is low.
The object of the invention can be achieved by following technical proposals, the integrated feeding network of a kind of dualbeam, comprise: two have 12 of out of phase characteristic and do not wait the power splitters 3 such as power divider circuit plate 1,2,12 2, two output adapters 4, do not wait power splitter cover plate 5 and feeding network cassette holder 6 for two 12, it is characterized in that: 12 road input signal E
1, E
2.E
11, E
12Be divided into two paths of signals through 12 2 power splitters such as grade respectively, wherein one the tunnel do not wait the synthetic E of power divider circuit plate 1 through equiphase 12
Σ 1, does not synthesize after not waiting power divider circuit plate 2 phase delays through equiphase 12 not on another road again, with each road phase retardation be followed successively by 0, φ, 2 φ ... .10 φ, 11 φ signals synthesize E
Σ 212 of two out of phase characteristics do not wait the physics vertical interconnecting structure between power divider circuit plate and 12 2 power splitters such as grade, two output adapters to be connected, adopt coaxial cable and little tape relay, 12 of above-mentioned two out of phase characteristics do not wait the power splitters 3 such as power divider circuit plate 1,2,12 2 and two output adapters 4 all to be integrated in a feeding network cassette holder 6, wherein: φ is phase gradient, E is signal amplitude, e
jφBe phase place.
The present invention has following beneficial effect than prior art:
The present invention is based on the weak point that prior art exists, proposed 2 power splitters such as grade, 12 thinkings that do not wait power splitter and delay line to carry out Integrated design are realized dualbeam, reduced the physical dimension of dualbeam feeding network.the present invention is integrated in whole devices in a feeding network cassette holder, physics vertical interconnecting structure and feeding network cassette holder, 12 do not wait the power splitter cover plate, 2 power splitter cover plate such as grade and base plate Unitings, 12 do not wait the power splitters such as power splitter and 2, physics vertical interconnecting structure between output adapter adopts the mode of coaxial cable and little tape relay to realize, thereby reduced the lateral dimension of dualbeam feeding network, adopt 12 of small-sized 2 power splitters such as grade and stripline design not wait power splitter to reduce the height of dualbeam feeding network, feeding network cassette holder size can be reduced to 200 * 132 * 16.5mm.
Improved the reliability of dualbeam feeding network.The present invention is integrated in whole devices in a feeding network cassette holder, 12 of 2 power splitters such as grade and out of phase characteristic do not wait the connection between power splitter to adopt the physics vertical interconnecting structure to realize, dualbeam feeding network inside does not have the radio frequency connectivity port, thereby has improved system reliability.
Improved the width phase precision of dualbeam feeding network.The present invention is with whole device Integrated designs, considered influencing each other between each device, 2 power splitters such as grade and 12 do not wait the physics vertical interconnecting structure between power splitter to improve the phase accuracy of each port, and the amplitude precision of integrated feeding network can reach ± 0.4dB, and phase accuracy can reach ± and 4 °.
Reduced the debugging work of dualbeam feeding network.Only need carry out parameter testing after the integrated dualbeam feeding network assembling of the present invention's design is completed, need not too many debugging work, the design debugging work load that does not wait power splitter to split placement with respect to 2 power splitters such as grade and 12 reduces greatly.
Reduced the cost of dualbeam feeding network.The present invention is integrated in whole devices in a feeding network cassette holder, has reduced 24 high phase accuracy requirement radio frequency cables, 48 radio frequency connectors, cost only have adopt 2 power splitters such as grade and 12 do not wait power splitter split placement design 1/3.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the integrated feeding network of dualbeam of the present invention.
Fig. 2 is the integrated feeding network top view of dualbeam of the present invention.
Fig. 3 is the upward view of Fig. 2.
Fig. 4 is the integrated feeding network cassette holder of dualbeam of the present invention structural perspective.
Fig. 5 is that the present invention 12 does not wait power splitter covering plate structure stereogram.
Fig. 6 is the present invention's 2 stereograms such as power divider structure such as grade.
Fig. 7 is output adapter structural perspective of the present invention.
Fig. 8 is that the present invention 12 does not wait the power splitter topology diagram.
In figure: 1. equiphase 12 does not wait power splitter, and 2. equiphase 12 does not wait power splitter, 3.2 power splitters such as grade, 4. output adapter, 5.12 do not wait power splitter cover plate, 6. feeding network cassette holder, 7. I-shaped piece, 8. front deck, 9. lightening core, 10. middle deck, 11. rear deck 12.U shape pieces, 13.2 power splitter such as grade/output adapter cover plates, 14.2 Deng power splitter/output adapter base plate, 15. coaxial cables, 16. connectors, 17.2 etc. the power divider circuit plate, 18. output adapter circuit boards.
Embodiment
Consult Fig. 1.In a most preferred embodiment described below, the integrated feeding network of dualbeam, comprise: two have 12 of out of phase characteristic and do not wait the power splitters such as power splitter, 12 2, two output adapters 4, do not wait power splitter cover plate 5 and feeding network cassette holder 6 for two 12, wherein 12 road input signal E
1, E
2.E
11, E
12Be divided into two paths of signals through 12 2 power splitters such as grade respectively, the one tunnel does not wait the power splitter equiphase to synthesize E through equiphase 12
Σ 1, does not synthesize after not waiting power splitter phase delay through equiphase 12 not on another road again, with each road phase retardation be followed successively by 0, φ, 2 φ ... .10 φ, 11 φ signals synthesize E
Σ 2, specifically can be described as: E
Σ 1=E
1+ E
2+ ... + E
11+ E
12E
Σ 2=E
1+ E
2e
jφ+ ... + E
11e
J10 φ+ E
12e
J11 φ, wherein: φ is phase gradient, E is signal amplitude, e
jφBe phase place.If do not replenish the implication of upper subscript, when unexamined person requires to replenish, can not fill into.Do not wait power splitter and delay line to carry out the integrated mentality of designing that realizes dualbeam 12 of above-mentioned 2 power splitters such as grade, out of phase characteristic, two kinds of designs arranged:
The first scheme adopts the strip line sandwich construction, do not wait power splitter 1 design in a plane 2 power splitters such as grade and equiphase 12, equiphase 12 does not wait power splitter 2 designs in another plane, signal transmission between two-layer adopts plated-through hole to realize, this scheme is very high to the processing technology requirement of little band plate, and Project Realization is got up extremely difficult.
First scheme does not wait power splitter to separate design 12 of 2 power splitters such as grade and out of phase characteristic, 12 of 2 planes such as power splitter such as grade and out of phase characteristic do not wait vertical placement the in power splitter plane, adopt the physics vertical interconnecting structure to realize that signal between the two transmits, all device is integrated in a feeding network cassette holder 6, this scheme requires lower to the processing technology to little band plate, but structural design and processing to the feeding network cassette holder have proposed higher requirement, and Project Realization is comparatively easy.Most preferred embodiment of the present invention is to adopt first scheme to realize.
Consult Fig. 2, Fig. 3.In following examples, take the dualbeam feeding network that is of a size of 200 * 132 * 16.5mm as most preferred embodiment.Because the device that forms the dualbeam feeding network is a lot, the feeding network body is divided into four parts from structure: equiphase 12 does not wait power divider circuit plate 1, equiphase 12 does not wait power divider circuit plate 2, power splitter 3 and the output adapters 4 such as 2.In topology layout, in order to place all devices in limited space, have 12 of out of phase characteristic with two and do not wait in the rectangle mold cavity of the parallel embedding of power divider circuit backboard backrest feeding network cassette holder 6 middle decks 10 shown in Figure 4, and the distance between above-mentioned two circuit boards is just in time the power splitter 3 output port spacings such as 2.The power splitters 3 such as two output adapters 4 and 12 2, be spaced by feeding network cassette holder 6 both sides the gap slot that the I-shaped piece 7 that connects firmly and U-shaped piece 12 form, laterally be fixed on respectively in front deck 8 and rear deck 11, the inner conductor of output adapter 4 and the power splitters 3 such as 2 is welded on the 12 metallic conductor positions of not waiting the place of fluting on power divider circuit plate 2.12 do not wait power splitter cover plate 5 to be used for fixing two has 12 of out of phase characteristic and does not wait the power divider circuit plate, guarantees that 12 do not wait signal transmitting between power splitter 3, the output adapters 4 such as power divider circuit plate and 2.Two back-to-back the out of phase characteristic 12 do not wait power splitter 3, two output adapters 4 such as power divider circuit plate 1,2,12 2 connect by the physics vertical interconnecting structure and are integrated in a feeding network cassette holder 6.
Consult Fig. 4.12 2 power splitters such as grade, two output adapters 4 and two have 12 of out of phase characteristic not wait power divider circuit plate 1,2 are structurally independently, and in order to satisfy the performance requirement of dualbeam feeding network, both must keep relatively fixing.Therefore feeding network cassette holder 6 is designed to fix 42 power splitters such as grade and 1 output adapter 4 front deck 8, parallelly embed the cuboid middle deck 10 that 12 of two out of phase characteristics do not wait the power divider circuit plate, fix the rear deck 11 of 82 power splitters such as grade and 1 output adapter 4, totally three cabins.Front deck 8 is provided with along the spaced I-shaped piece 7 of casing parallel longitudinal, I-shaped piece 7 is spaced and connects firmly on box bottom, the outer gap slot of 42 power splitters such as grade and 1 output adapter 4 is laid in formation, output adapter 4 is fixed by screws on the box bottom of front deck 8 middle I-shaped piece 7 clearance spaces, and 42 power splitters such as grade are separately fixed on the box bottom of front deck 8 both sides I-shaped piece 7 clearance spaces.Rear deck 11 is provided with along the casing parallel longitudinal, equi-spaced apart is arranged the U-shaped piece 12 that connects firmly on box bottom, form the groove of fixedly laying 82 power splitters such as grade and 1 output adapter, output adapter 4 is fixed in the groove of 12 of middle U-shaped pieces of rear deck 11, and 82 power splitters such as grade are separately fixed in the groove of 12 of rear deck both sides U-shaped pieces.The middle deck 10 that is positioned at feeding network cassette holder middle part is to place back-to-back two to have the cabin body that 12 of out of phase characteristic does not wait the power divider circuit plate, and cabin body bottom has lightening core 9.Two have 12 of out of phase characteristic and do not wait power splitter, the output adapters 4 such as power divider circuit plate, 12 2 all to be fixed on the feeding network cassette holder, have guaranteed that both is relatively fixing.
Consult Fig. 5.In order to solve electromagnetic leakage to the impact of dualbeam feeding network performance, 12 do not wait power splitter cover plate 5 should with 12 do not wait power divider circuit plate 1,2 and the weld of coaxial cable 15 cover fully, make signal not to external radiation, guaranteed the signal transmitting.The groove of opening on cover plate is the space that reserves in order to avoid coaxial cable geometric position interference.
Consult Fig. 6.2 power splitters such as grade are comprised of the power splitter base plates 14 such as 2 cover plates such as power splitter such as grade 13,2, coaxial cable 15, power divider circuit plate 17, the connectors 16 such as 2.2 base plates such as power splitter such as grade 14 are used for fixing power divider circuit plate 17, connector 16 and the coaxial cables 15 such as 2, have guaranteed the relative fixing of the power divider circuit plates 17 such as 2 and coaxial cable 15, connector 16.In order to solve electromagnetic leakage to the impact of dualbeam feeding network performance, 2 cover plates such as power splitter such as grade 13 should cover the weld of power divider circuit plate 17 welds such as connector 16 and 2 and the power divider circuit plates 17 such as coaxial cable 15 and 2 fully, make signal transmission not to external radiation, guaranteed the signal transmitting.
Consult Fig. 7.Output adapter is comprised of output adapter cover plate 13, output adapter base plate 14, coaxial cable 15, output switching circuit board 18, connector 16.Output adapter base plate 14 is used for fixedly output adapter circuit board 18, connector 16 and coaxial cable 15, guaranteed the relative fixing of output adapter circuit board 18 and coaxial cable 15, connector 16.In order to solve electromagnetic leakage to the impact of dualbeam feeding network performance, output adapter cover plate 13 should cover the weld of connector 16 and output adapter circuit board 18 welds and coaxial cable 15 and output adapter circuit board 18 fully, make signal transmission not to external radiation, guaranteed the signal transmitting.
Consult Fig. 8.2 power splitters such as grade, output adapter and 12 do not wait power splitter all to adopt strip lines configuration to realize, little carrying material dielectric constant is 2.2.Do not wait the amplitude distribution of power splitter by the merit proportion by subtraction of each unit 2 power splitter according to 12, as shown in table 1, in figure, in table, sequence number 1-10 represents to form 12 numberings that do not wait unit 2 power splitters of power splitter, determine that near 1 principle 12 do not wait the power divider circuit topological structure as far as possible, angle requirement according to the received beam off-normal, φ=2 π dsin θ/Λ by formula, the phase gradient of calculative determination adjacent port, in formula: Φ represents that phase gradient, θ represent that wave beam deflecting angle, Λ represent the operating frequency wavelength.Can utilize Ansoft HFSS simulation software that each unit 2 power splitter is designed, do not wait power splitter, output adapter to be integrally connected 12 of 2 power splitters such as grade, out of phase characteristic according to structural requirement with coaxial cable 15 after the 2 power splitters designs of each unit are completed, recycle Ansoft HFSS simulation software and carry out whole design of Simulation.
The merit proportion by subtraction of table 1 unit 2 power splitters
| The power splitter numbering | The merit proportion by subtraction | The power splitter numbering | The merit proportion by subtraction | The power splitter numbering | The merit proportion by |
| 1 | 1.117 | 5 | 1.221 | 9 | 2.298 |
| 2 | 1.127 | 6 | 1.035 | 10 | 1.039 |
| 3 | 1.306 | 7 | 1.515 | 11 | 1.633 |
| 4 | 1.313 | 8 | 1.607 | ? | ? |
The above is only the preferred embodiments of the present invention.Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the principle of the invention, can also make some distortion and improvement, similarly the equivalent transformation of homogeneous structure, all fall into protection scope of the present invention.
Claims (8)
1. integrated feeding network of dualbeam, comprise: two have 12 of out of phase characteristic and do not wait the power splitters (3) such as power divider circuit plate (1,2), 12 2, two output adapters (4), do not wait power splitter cover plate (5) and feeding network cassette holder (6) for two 12, it is characterized in that: 12 road input signal E
1, E
2.E
11, E
12Be divided into two paths of signals through 12 2 power splitters such as grade respectively, wherein one the tunnel do not wait power divider circuit plate (1) to synthesize E through equiphase 12
Σ 1, does not synthesize after not waiting power divider circuit plate (2) phase delay through equiphase 12 not on another road again, with each road phase retardation be followed successively by 0, φ, 2 φ ... .10 φ, 11 φ signals synthesize E
Σ 212 of two out of phase characteristics do not wait the physics vertical interconnecting structure between power divider circuit plate and 12 2 power splitters such as grade, two output adapters to be connected and adopt coaxial cable and little tape relay, 12 of above-mentioned two out of phase characteristics do not wait the power splitters (3) such as power divider circuit plate (1,2), 12 2 and two output adapters (4) all to be integrated in a feeding network cassette holder (6), wherein: φ is phase gradient, E is signal amplitude, e
jφBe phase place.
2. the integrated feeding network of a kind of dualbeam according to claim 1, it is characterized in that: 12 of 2 planes such as power splitter such as grade and out of phase characteristic do not wait vertical placement the in power splitter plane, adopt the physics vertical interconnecting structure to realize that signal between the two transmits, all devices are integrated in a feeding network cassette holder (6).
3. the integrated feeding network of a kind of dualbeam according to claim 1, it is characterized in that: two have 12 of out of phase characteristic and do not wait in the rectangle mold cavity of power divider circuit backboard backrest parallel embedding feeding network cassette holder (6) middle deck (10), and the distance between above-mentioned two circuit boards is just in time power splitter (3) the output port spacings such as 2.
4. the integrated feeding network of a kind of dualbeam according to claim 1, it is characterized in that: the power splitter (3) such as two output adapters (4) and 12 2, be spaced by feeding network cassette holder (6) both sides the gap slot that the I-shaped piece (7) that connects firmly and U-shaped piece (12) form, laterally be fixed on respectively in front deck (8) and rear deck (11), the inner conductor of output adapter (4) and the power splitters (3) such as 2 is welded on the 12 metallic conductor positions of not waiting the upper fluting of power divider circuit plate (2) place.
5. the integrated feeding network of a kind of dualbeam according to claim 1, it is characterized in that: feeding network cassette holder (6) be designed to fix 42 power splitters such as grade and 1 output adapter (4) front deck (8), parallelly embed cuboid middle deck (10) that 12 of two out of phase characteristics do not wait the power divider circuit plate, fix the rear deck (11) of the power splitters such as 82 and 1 output adapter (4), totally three cabins.
6. the integrated feeding network of a kind of dualbeam according to claim 6, it is characterized in that: described front deck (8) is provided with along the spaced I-shaped piece of casing parallel longitudinal (7), I-shaped piece (7) is spaced and connects firmly on box bottom, the outer gap slot of 42 power splitters such as grade and 1 output adapter (4) is laid in formation, output adapter (4) is fixed by screws on the box bottom of middle I-shaped piece (7) clearance space of front deck (8), 42 power splitters such as grade are separately fixed on the box bottom of front deck (8) both sides I-shaped pieces (7) clearance space.
7. the integrated feeding network of a kind of dualbeam according to claim 6, it is characterized in that: rear deck (11) is provided with along the casing parallel longitudinal, equi-spaced apart is arranged the U-shaped piece (12) that connects firmly on box bottom, form the groove of fixedly laying 82 power splitters such as grade and 1 output adapter, output adapter (4) is fixed in groove between the middle U-shaped piece (12) of rear deck (11), and 82 power splitters such as grade are separately fixed in groove between rear deck both sides U-shaped pieces (12).
8. the integrated feeding network of a kind of dualbeam according to claim 1, it is characterized in that: 12 do not wait power splitter cover plate (5) not wait the weld of power divider circuit plate (1,2) and coaxial cable (15) to cover fully with (12), and the groove of opening on cover plate is the space that reserves in order to avoid coaxial cable geometric position interference.
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|---|---|---|---|
| CN201310053182.4A CN103094654B (en) | 2013-01-28 | 2013-01-28 | Double beam integrated feed network |
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|---|---|---|---|
| CN201310053182.4A CN103094654B (en) | 2013-01-28 | 2013-01-28 | Double beam integrated feed network |
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| CN103094654A true CN103094654A (en) | 2013-05-08 |
| CN103094654B CN103094654B (en) | 2015-03-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825109A (en) * | 2014-01-24 | 2014-05-28 | 张家港保税区国信通信有限公司 | Microstrip dual-beam feed network structure |
| CN104502903A (en) * | 2014-11-28 | 2015-04-08 | 成都嘉纳海威科技有限责任公司 | Multibeam receiving SIP system based on TVS switching plate |
| CN106887717A (en) * | 2017-02-09 | 2017-06-23 | 北京空间飞行器总体设计部 | A kind of multilayer feeding network |
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| EP0896383A2 (en) * | 1997-08-07 | 1999-02-10 | Space Systems/Loral, Inc. | A multibeam phased array antenna system |
| US20030052819A1 (en) * | 2001-08-30 | 2003-03-20 | Lockheed Martin Corporation | Multi-beam antenna with interference cancellation network |
| CN1792005A (en) * | 2003-05-17 | 2006-06-21 | 昆特尔科技有限公司 | Phased array antenna system with adjustable electrical tilt |
| CN102055070A (en) * | 2009-11-03 | 2011-05-11 | 电子科技大学 | Strip line multi-beam feed network |
-
2013
- 2013-01-28 CN CN201310053182.4A patent/CN103094654B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896383A2 (en) * | 1997-08-07 | 1999-02-10 | Space Systems/Loral, Inc. | A multibeam phased array antenna system |
| US20030052819A1 (en) * | 2001-08-30 | 2003-03-20 | Lockheed Martin Corporation | Multi-beam antenna with interference cancellation network |
| CN1792005A (en) * | 2003-05-17 | 2006-06-21 | 昆特尔科技有限公司 | Phased array antenna system with adjustable electrical tilt |
| CN102055070A (en) * | 2009-11-03 | 2011-05-11 | 电子科技大学 | Strip line multi-beam feed network |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825109A (en) * | 2014-01-24 | 2014-05-28 | 张家港保税区国信通信有限公司 | Microstrip dual-beam feed network structure |
| CN104502903A (en) * | 2014-11-28 | 2015-04-08 | 成都嘉纳海威科技有限责任公司 | Multibeam receiving SIP system based on TVS switching plate |
| CN104502903B (en) * | 2014-11-28 | 2017-12-29 | 成都嘉纳海威科技有限责任公司 | A kind of multi-beam based on TSV pinboards receives SIP systems |
| CN106887717A (en) * | 2017-02-09 | 2017-06-23 | 北京空间飞行器总体设计部 | A kind of multilayer feeding network |
| CN106887717B (en) * | 2017-02-09 | 2020-02-14 | 北京空间飞行器总体设计部 | Multilayer feed network |
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| CN103094654B (en) | 2015-03-04 |
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