CN103094654B - Double beam integrated feed network - Google Patents
Double beam integrated feed network Download PDFInfo
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- CN103094654B CN103094654B CN201310053182.4A CN201310053182A CN103094654B CN 103094654 B CN103094654 B CN 103094654B CN 201310053182 A CN201310053182 A CN 201310053182A CN 103094654 B CN103094654 B CN 103094654B
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- feeding network
- divider circuit
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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 being applied to phased array antenna.
Background technology
Dualbeam feeding network is widely used in the dualbeam receiving system of phased array antenna, and form two different received beams pointed to, one of them beam position is antenna array normal direction, and another wave beam departs from antenna array normal direction simultaneously.Usually in dualbeam feeding network, 2 power splitters such as grade and 12 power splitter such as not split placement, design respectively, and 2 power splitters such as grade and 12 not etc. do not adopt radio frequency cable to connect between power splitter.The implementation method of such dualbeam can bring the problem of following several respects: the structure space placed needed for whole feeding network is very large; Because the cable between 2 power splitters such as grade and 12 power splitter such as not has strict phase requirements, cause cable to process more difficult, cable cost is very high; Phase error is not easy to control; Debugging efforts is very large; Because stube cable is a lot, reliability is very low; It is very high that whole dualbeam receives feeding network cost.
Summary of the invention
Task of the present invention is the defect that, phase error very large for the structure space needed for common double wave beam feeding network is not easy to control, debugging work load is large, reliability is low, cost is high, propose a kind of amplitude-phase error to be 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 12 power splitter 3, two output adapters such as power divider circuit plate 1,2,12 24, two 12 power splitter cover plate 5 and feeding network cassette holders 6 such as or not or not out of phase characteristic, 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 a road through equiphase 12 not etc. power divider circuit plate 1 synthesize E
Σ 1, another road is synthesized after not equiphase 12 power divider circuit plate 2 phase delay such as not again, each road phase retardation is followed successively by 0, φ, 2 φ ... .10 φ, 11 φ signal syntheses are E
Σ 2two out of phase characteristics 12 not etc. power divider circuit plate be connected with the physical vertical interconnection structure between 12 2 power splitters such as grade, two output adapters, adopt coaxial cable and micro-tape relay, above-mentioned two out of phase characteristics 12 not etc. the power splitter 3 such as power divider circuit plate 1,2,12 2 and two output adapters 4 are not all integrated in a feeding network cassette holder 6, wherein: φ is phase gradient, E is signal amplitude, e
j φfor phase place.
The present invention has following beneficial effect compared to prior art:
The present invention is based on the weak point that prior art exists, propose by 2 power splitters such as grade, 12 not etc. power splitter and delay line carry out the thinking of Integrated design to realize dualbeam, reduce the physical dimension of dualbeam feeding network.Whole device is integrated in a feeding network cassette holder by the present invention, physical vertical interconnection structure and feeding network cassette holder, 12 do not wait 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, physical vertical interconnection structure between output adapter adopts the mode of coaxial cable and micro-tape relay to realize, thus reduce the lateral dimension of dualbeam feeding network, adopt 12 of small-sized 2 power splitters such as grade and stripline design not etc. power splitter reduce the height of dualbeam feeding network, feeding network cassette holder size can be reduced to 200 × 132 × 16.5mm.
Improve the reliability of dualbeam feeding network.Whole device is integrated in a feeding network cassette holder by the present invention, 12 connections not etc. between power splitter of 2 power splitters such as grade and out of phase characteristic adopt physical vertical interconnection structure to realize, dualbeam feeding network inside does not have radio frequency connectivity port, thus improves system reliability.
Improve the width phase precision of dualbeam feeding network.The present invention is by whole device Integrated design, consider influencing each other between each device, the physical vertical interconnection structure of 2 power splitters such as grade and 12 not etc. between power splitter improves 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 °.
Decrease the debugging efforts of dualbeam feeding network.Need carry out parameter testing after the integrated dualbeam feeding network of the present invention's design assemble, without the need to too many debugging efforts, greatly reduce relative to 2 power splitters such as grade and the 12 design debugging work load that etc. power splitter does not split placement.
Reduce the cost of dualbeam feeding network.Whole device is integrated in a feeding network cassette holder by the present invention, decreases 24 high phase accuracy requirement radio frequency cables, 48 radio frequency connectors, cost only have employing 2 power splitter such as grade and 12 not etc. power splitter splits 1/3 of the design of placement.
Accompanying drawing explanation
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 dualbeam of the present invention integrated feeding network cassette holder structural perspective.
Fig. 5 is that the present invention 12 does not wait power splitter covering plate structure stereogram.
Fig. 6 is stereogram such as power divider structure such as the present invention 2 grade.
Fig. 7 is output adapter structural perspective of the present invention.
Fig. 8 is that the present invention 12 does not wait power splitter topology diagram.
In figure: 1. equiphase 12 does not wait power splitter, 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 block, 8. front deck, 9. lightening core, 10. middle deck, 11. rear deck 12.U shape blocks, 13.2 power splitter such as grade/output adapter cover plates, 14.2 power splitter such as grade/output adapter base plates, 15. coaxial cables, 16. connectors, the power divider circuit plates such as 17.2,18. 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 power splitter cover plate 5 and feeding network cassette holder 6, the wherein 12 road input signal E such as do not wait power splitter, the power splitter such as 12 2, two output adapters 4, two 12 not
1, E
2.E
11, E
12be divided into two paths of signals through 12 2 power splitters such as grade respectively, power splitter equiphase synthesis E is not waited through equiphase 12 in a road
Σ 1, another road is synthesized after not equiphase 12 does not wait power splitter phase delay again, each road phase retardation is followed successively by 0, φ, 2 φ ... .10 φ, 11 φ signal syntheses are E
Σ 2, specifically can be described as: E
Σ 1=E
1+ E
2+ ... + E
11+ E
12; E
Σ 2=E
1+ E
2e
j φ+ ... + E
11e
j10 φ+ E
12e
j11 φ, wherein: φ is phase gradient, E is signal amplitude, e
j φfor phase place.If do not supplement the implication of upper subscript, time unexamined person requires to supplement, can not fill into.By above-mentioned 2 power splitters such as grade, out of phase characteristic 12 not etc. power splitter and delay line carry out the integrated mentality of designing realizing dualbeam, have two kinds of designs:
Embodiment 1
The first scheme adopts strip line sandwich construction, by 2 power splitters such as grade and equiphase 12 not etc. power splitter 1 design in a plane, to not equiphase 12 does not wait power splitter 2 to design in another plane, Signal transmissions between two-layer adopts plated-through hole to realize, this scheme requires very high to the processing technology of micro-band plate, and Project Realization is got up extremely difficult.
Embodiment 2
First scheme by 12 of 2 power splitters such as grade and out of phase characteristic not etc. power splitter carry out separately design, 2 power splitter planes such as grade and out of phase characteristic 12 not etc. power splitter plane orthogonal place, adopt physical vertical interconnection structure realization Signal transmissions between the two, whole device is integrated in a feeding network cassette holder 6, this scheme is to requiring lower to the processing technology of micro-band plate, but propose higher requirement to the structural design of feeding network cassette holder with processing, Project Realization is comparatively easy.Most preferred embodiment of the present invention adopts first scheme to realize.
Consult Fig. 2, Fig. 3.In the examples below, to be of a size of the dualbeam feeding network of 200 × 132 × 16.5mm for most preferred embodiment.Because the device of composition dualbeam feeding network is a lot, feeding network body is divided into four parts from structure: equiphase 12 power divider circuit plate 1, not equiphase 12 power splitter 3 and the output adapters 4 such as power divider circuit plate 2,2 such as or not.In topology layout, in order to place all devices in limited space, two are had in the rectangle mold cavity of 12 feeding network cassette holder 6 middle decks 10 shown in the parallel embedding Fig. 4 of power divider circuit backboard backrest such as or not out of phase characteristic, and the distance between above-mentioned two circuit boards is just in time 2 spacing such as output port such as power splitter 3 such as grade.The power splitters 3 such as two output adapters 4 and 12 2, the gap slot of I-shaped block 7 and U-shaped block 12 formation connected firmly is spaced by feeding network cassette holder 6 both sides, laterally be fixed in front deck 8 and rear deck 11 respectively, the inner conductor of the power splitters 3 such as output adapter 4 and 2 is welded on the 12 metallic conductor positions at fluting place on power divider circuit plate 2 such as not.12 do not wait power splitter cover plate 5 for fixing the 12 power divider circuit plates such as or not two have out of phase characteristic, ensure 12 power divider circuit plate and 2 etc. signal transmittings between power splitter 3, output adapter 4 such as not.Two back-to-back out of phase characteristic 12 not etc. power splitter 3, two output adapters 4 such as power divider circuit plate 1,2,12 2 connected by physical vertical interconnection structure and be 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 out of phase characteristic 12 not etc. power divider circuit plate 1,2 be structurally independently, in order to meet the performance requirement of dualbeam feeding network, both must keep relatively fixing.Therefore feeding network cassette holder 6 is designed to fix the front deck 8 of 42 power splitters such as grade and 1 output adapter 4, the parallel cuboid middle deck 10 embedding the 12 power divider circuit plates such as or not two out of phase characteristics, 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 parallel longitudinal spaced I-shaped block 7 of casing, I-shaped block 7 is spaced and connects firmly on box bottom, form the outer gap slot laying 42 power splitters such as grade and 1 output adapter 4, output adapter 4 is fixed by screws on the box bottom of front deck 8 middle I-shaped block 7 clearance space, and 42 power splitters such as grade are separately fixed on the box bottom of front deck 8 both sides I-shaped block 7 clearance space.Rear deck 11 is provided with along casing parallel longitudinal, equi-spaced apart arrangement connects firmly the U-shaped block 12 on box bottom, form the groove fixedly laying 82 power splitters such as grade and 1 output adapter, in groove between the middle U-shaped block 12 that output adapter 4 is fixed on rear deck 11,82 power splitters such as grade are separately fixed in the groove between rear deck both sides U-shaped block 12.The middle deck 10 be positioned in the middle part of feeding network cassette holder places the cabin body that two have the 12 power divider circuit plates such as or not out of phase characteristic back-to-back, has lightening core 9 bottom the body of cabin.Two have out of phase characteristic 12 not etc. power divider circuit plate, power splitter, the output adapters 4 such as 12 2 be all fixed on feeding network cassette holder, ensure that both is relatively fixing.
Consult Fig. 5.In order to solve the impact of electromagnetic leakage on dualbeam feeding network performance, 12 do not wait power splitter cover plate 5 weld of 12 power divider circuit plate 1,2 and the coaxial cables 15 such as not should be covered completely, make signal not to external radiation, ensure that signal transmitting.The groove that cover plate is opened is the space reserved to avoid the interference of coaxial cable geometric position.
Consult Fig. 6.2 power splitters such as grade are made up of power divider circuit plate 17, the connectors 16 such as power splitter base plate 14, coaxial cable 15,2 such as 2 cover plates such as power splitter such as grade 13,2.2 base plates such as power splitter such as grade 14 for fixing power divider circuit plate 17, connector 16 and the coaxial cables 15 such as 2, ensure that the power divider circuit plates 17 such as 2 and coaxial cable 15, connector 16 relative fixing.In order to solve the impact of electromagnetic leakage on dualbeam feeding network performance, the weld of the power divider circuit plates 17 such as power divider circuit plate 17 welds such as connector 16 and 2 and coaxial cable 15 and 2 should cover by 2 cover plates such as power splitter such as grade 13 completely, make signal transmission not to external radiation, ensure that signal transmitting.
Consult Fig. 7.Output adapter is made up 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 for fixing output adapter circuit board 18, connector 16 and coaxial cable 15, ensure that output adapter circuit board 18 and coaxial cable 15, connector 16 relative fixing.In order to solve the impact of electromagnetic leakage on dualbeam feeding network performance, the weld of connector 16 and output adapter circuit board 18 weld and coaxial cable 15 and output adapter circuit board 18 should cover by output adapter cover plate 13 completely, make signal transmission not to external radiation, ensure that signal transmitting.
Consult Fig. 8.2 power splitters such as grade, output adapter and 12 power splitter such as not all adopt strip lines configuration to realize, and micro-carrying material dielectric constant is 2.2.The merit proportion by subtraction of amplitude distribution by each unit 2 power splitter of power splitter is not waited according to 12, as shown in table 1, in figure, in table, sequence number 1-10 represents the numbering of composition 12 unit 2 power splitter of power splitter such as not, the 12 power divider circuit topological structures such as are not determined as far as possible close to the principle of 1, according to the angle requirement of received beam off-normal, by formula φ=2 π dsin θ/Λ, calculate the phase gradient determining adjacent port, in formula: Φ represents phase gradient, θ represents wave beam deflecting angle, Λ represents operating frequency wavelength.Ansoft HFSS simulation software can be utilized to design each unit 2 power splitter, after each unit 2 power splitter has designed according to structural requirement coaxial cable 15 by 2 power splitters such as grade, out of phase characteristic 12 not etc. power splitter, output adapter be integrally connected, recycling Ansoft HFSS simulation software carries out overall design of Simulation.
The merit proportion by subtraction of table 1 unit 2 power splitter
| Power splitter is numbered | Merit proportion by subtraction | Power splitter is numbered | Merit proportion by subtraction | Power splitter is numbered | Merit proportion by subtraction |
| 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.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make some distortion and improvement, the equivalent transformation of similar homogeneous structure, all falls into protection scope of the present invention.
Claims (8)
1. the integrated feeding network of dualbeam, comprise: two 12 power divider circuit plate (1,2), the power splitter (3) such as 12 2, two output adapters (4), two 12 power splitter cover plate (5) and feeding network cassette holders (6) such as or not or not out of phase characteristic, 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 a road is through equiphase 12 power divider circuit plate (1) the synthesis E such as not
Σ 1, another road is synthesized after not equiphase 12 power divider circuit plate (2) phase delay such as not again, each road phase retardation is followed successively by 0, φ, 2 φ ... .10 φ, 11 φ signal syntheses are E
Σ 2two out of phase characteristics 12 not etc. power divider circuit plate be connected with the physical vertical interconnection structure between 12 2 power splitters such as grade, two output adapters and adopt coaxial cable and micro-tape relay, above-mentioned two out of phase characteristics 12 not etc. power divider circuit plate (1,2), the power splitters (3) such as 12 2 and two output adapters (4) are not all integrated in a feeding network cassette holder (6), wherein: φ is phase gradient, E is signal amplitude, e
j φfor phase place.
2. the integrated feeding network of a kind of dualbeam according to claim 1, it is characterized in that: 2 power splitter planes such as grade and out of phase characteristic 12 not etc. power splitter plane orthogonal place, adopt physical vertical interconnection structure realization Signal transmissions between the two, whole device is 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 in the rectangle mold cavity of the 12 power divider circuit backboard backrests parallel embedding feeding network cassette holder (6) middle deck (10) such as or not out of phase characteristic, and the distance between above-mentioned two circuit boards is just in time 2 power splitter such as grade (3) output port spacing.
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, the gap slot that the I-shaped block (7) that connects firmly and U-shaped block (12) formed is spaced by feeding network cassette holder (6) both sides, laterally be fixed in front deck (8) and rear deck (11) respectively, the inner conductor of output adapter (4) and the power splitters (3) such as 2 be welded on 12 not etc. power divider circuit plate (2) go up the metallic conductor position at fluting 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), parallel embed two out of phase characteristics 12 not etc. power divider circuit plate cuboid middle deck (10), 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 5, it is characterized in that: described front deck (8) is provided with along the parallel longitudinal spaced I-shaped block (7) of feeding network cassette holder casing, I-shaped block (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 I-shaped block (7) clearance space in the middle 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 block (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 casing parallel longitudinal, equi-spaced apart arrangement connects firmly the U-shaped block (12) on box bottom, form the groove fixedly laying 82 power splitters such as grade and 1 output adapter, in groove between the middle U-shaped block (12) that output adapter (4) is fixed on rear deck (11), 82 power splitters such as grade are separately fixed in the groove between rear deck both sides U-shaped block (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) weld of (12) power divider circuit plate (1,2) and coaxial cable (15) such as not to be covered completely, and the groove that cover plate is opened is the space reserved to avoid the interference of coaxial cable geometric position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310053182.4A CN103094654B (en) | 2013-01-28 | 2013-01-28 | Double beam integrated feed network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310053182.4A CN103094654B (en) | 2013-01-28 | 2013-01-28 | Double beam integrated feed network |
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| CN103094654A CN103094654A (en) | 2013-05-08 |
| CN103094654B true CN103094654B (en) | 2015-03-04 |
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Families Citing this family (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 |
| 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 |
| CN106887717B (en) * | 2017-02-09 | 2020-02-14 | 北京空间飞行器总体设计部 | Multilayer feed network |
Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6642883B2 (en) * | 2001-08-30 | 2003-11-04 | Lockheed Martin Corporation | Multi-beam antenna with interference cancellation network |
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2013
- 2013-01-28 CN CN201310053182.4A patent/CN103094654B/en active Active
Patent Citations (3)
| 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 |
| 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 |
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