CN103000977A - Broadband novel microstrip line three-way power divider - Google Patents
Broadband novel microstrip line three-way power divider Download PDFInfo
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- CN103000977A CN103000977A CN2012104669097A CN201210466909A CN103000977A CN 103000977 A CN103000977 A CN 103000977A CN 2012104669097 A CN2012104669097 A CN 2012104669097A CN 201210466909 A CN201210466909 A CN 201210466909A CN 103000977 A CN103000977 A CN 103000977A
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Abstract
The invention belongs to the field of microwave engineering and provides a broadband novel microstrip line three-way power divider. The power divider comprises a power divider input end, a power divider main body, a power divider output end, a circuit board and a power divider casing. The power divider main body adopts the printed circuit process and comprises 12 microstrip transmission lines with different characteristics and in the shape of a Chinese character 'tian' and two isolation resistors connected in parallel with the ground. Three nodes on the right side of the 'tian'-shaped structure are connected with two output ends of the power divider respectively, a middle node on the left side is connected with the input end of the power divider, and two additional nodes are connected with the isolation resistors respectively. The power divider has good power distribution, impedance matching and port isolation characteristics in 25% relative frequency band width. The novel three-way power divider is simple in structure, high in accuracy and easy to design and process. The power distribution ratio can be continuously adjusted in a certain range. The novel three-way power divider can be widely used in antenna feed networks, microwave circuits and microwave devices.
Description
Technical field
The invention belongs to the microwave engineering field, be specifically related to novel microstrip line three road power splitters in a kind of broadband.
Background technology
Power divider (abbreviation power splitter) can be realized the distributing/combining of multi-channel electromagnetic signal, is functional unit indispensable in the radio circuit.Except two road power splitters commonly used, in aerial array feeding network, power synthesis circuit, often need the power splitter of other minutes way, such as three road power splitters.To the less demanding occasion of power capacity, the outstanding advantage such as microstrip line three road power splitters are lightweight because having, cost is low, simple in structure is widely used in the fields such as mobile communication, Aero-Space, radar detection.
According to its design feature, the little of application is broadly divided into following a few class with three road power splitters at present: 1, the employing plane symmetry structure close with Wilkinson power splitter principle, by the appropriate design values of isolation resistance, and adopt width gradual change microstrip line, single or multiple lift coupled microstrip line, suppress since space structure cause three the tunnel between merit divide specific unbalance, obtain good constant power allocation performance and isolation performance; 2, adopt the resistance of fan-shaped offset of microstrip minor matters and radial placement to consist of broad-band multipath merit separation structure; 3, adopt two or more two road power splitters parallel connections or cascade to consist of three power splitters; 4, the microstrip line by the different characteristic impedance consists of multiport network, and finishes three merits minute function by the port of appointment.Wherein, front two class power splitters coupling and isolation index are general, mostly are the equal proportion power splitter; The 3rd class power splitter is the Modulating Power export ratio as requested, better realizes the coupling of each port and the isolation between output port, but it is slightly large to take up room; The 4th class power splitter indices is good, can realize the power stage of arbitrary proportion, and it is also smaller to take up room.
Summary of the invention
Novel microstrip line three road power splitters in a kind of broadband that the present invention proposes belong to above-mentioned the 4th class, and relatively existing power splitter is simple in structure, is easy to processing, and power-division ratios continuous setup within the specific limits.
Novel microstrip line three road power splitters in broadband provided by the invention comprise: power splitter input, power splitter main body, power splitter output, wiring board and power splitter housing.The power splitter main body is microstripline, arranges in the circuit board.Be provided with a power splitter input and three power splitter outputs in the power splitter main body.The power splitter housing fences up wiring board other five bread except the front, and is fixedly connected with together with wiring board.The power splitter main body adopts printed circuit technique, comprises microstrip transmission line and two isolation resistances that are parallel to ground of connecting 12 sections different characteristic impedances that are the sphere of movements for the elephants type, and the length of each section microstrip transmission line all is the quarter-wave under the central task frequency.Three nodes on sphere of movements for the elephants type structure right side connect respectively three power splitter outputs, and the intermediate node in sphere of movements for the elephants type structure left side connects the power splitter input, and two other node connects respectively isolation resistance R
1And R
2The sphere of movements for the elephants type structure of power splitter main body is symmetrical about horizontal center line axis.
By characteristic impedance and its length of fine setting of adjusting microstrip transmission line, power division, preferably impedance matching and the merit of realization different proportion are divided between port and are isolated.
50 ohm microstrip transmission lines of power splitter input and the equal Application standard of power splitter output.Power splitter housing reverse side punching, the reverse side that conducting resinl is poured into wiring board covers copper face and carries out bonding.
Advantage of the present invention and good effect are: this power splitter has good power division, impedance matching, port isolation characteristic in 25% relative frequency bandwidth; These novel three road power divider structures are simple, and precision is high, are easy to design processing, design directly effectively, and power-division ratios continuous setup within the specific limits; This power splitter can be widely used in antenna feeding network, microwave circuit and the microwave device.
Description of drawings
Fig. 1 is the structural representation of novel microstrip line three road power splitters in broadband of the present invention;
Fig. 2 is that power-division ratios is emulation and the actual measurement parameter of the power splitter of 1:2:1, and a is merit proportion by subtraction characteristic curve, and b is the isolation characteristic curve, and c is the return loss characteristic curve.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing and example.
As shown in Figure 1, novel microstrip line three road power splitters in a kind of broadband provided by the invention comprise a power splitter input 1, power splitter main body 2, three power splitter outputs 3, wiring board 4 and power splitter housings 5.Power splitter main body 2 is microstripline.Power splitter main body 2 is arranged on the wiring board 4, is provided with microstrip line in the power splitter main body 2 and links to each other with power splitter output 3 with power splitter input 1.Power splitter housing 5 encloses wiring board 4 other five bread except the front, and is fixedly connected with together with wiring board 4.
Power splitter main body 2 adopts the printed circuit techniques, processes as shown in Figure 1 sphere of movements for the elephants type structure at microwave-medium sheet material, and this sphere of movements for the elephants type is to be connected to form by 12 sections different characteristic impedance quarter-wave microstrip transmission lines.Three node PortB, the PortC on sphere of movements for the elephants type structure right side and PortD respectively connect three power splitter outputs 3, and the intermediate node PortA in left side connects power splitter input 1, and two other node connects respectively isolation resistance R
1And R
2Isolation resistance R
1And R
2Ground connection.The sphere of movements for the elephants type structure of power splitter main body 2 is symmetrical about horizontal center line axis.By characteristic impedance and its length of fine setting of adjusting transmission line, power division, preferably impedance matching and the merit of realization different proportion are divided between port and are isolated.The length of each section microstrip transmission line all is the quarter-wave (guide wavelength of microstrip transmission line) under the central task frequency.When the power-division ratios of three road power splitters satisfies symmetry, because the Energy distribution of whole power splitter is fully symmetrical about horizontal center line axis.Through this axis, with the perpendicular tangent plane of dielectric-slab in, electric field intensity can't be to component, namely this plane is desirable magnetic wall; Can equivalence be open circuit point.So this power splitter has identical electrical property about the port of axis symmetry.
For the initial designs parameter that consists of each section microstrip line of power splitter main body 2 among Fig. 1, original available multiport network cascade analysis method is calculated its scattering properties.But consider the discontinuities such as T-shaped knot, turning and live width sudden change to the impact of circuit performance, the analytical expression that accurately writes out collision matrix is very difficult.When specific implementation, can adopt Direct Optimization Method.That is: behind the given topological structure, the reasonable change of setting up structural parameters is interval, and optimization aim is set, and directly optimizes to obtain satisfactory final result.
Utilize this topological structure, the design power distribution ratio is this kind structure three road power splitters of 1:2:1 in the 2.1-2.7GHz frequency range.Select relative dielectric constant ε r=2.55, dielectric thickness H
1=1mm, cover copper thickness H
2The double-sided copper-clad polytetrafluoroethylene microwave-medium sheet material of=0.035mm take the 2.4GHz frequency as design center frequency, is finished the modeling and optimization design as substrate in HFSS.Then adopt above-mentioned double-sided copper-clad polytetrafluoroethylene microwave-medium sheet material to manufacture experimently this three road power splitters sample.
The parameter optimization result of table 1 power divider structure of the present invention when power-division ratios is 1:2:1
| Parameter | Value in the 1:2:1 power splitter | Parameter | Value in the 1:2:1 power splitter |
| W 1 | 0.3mm | W 6 | 3.3mm |
| W 2 | 0.5mm | W 7 | 3.0mm |
| W 3 | 0.3mm | L 1 | 24.1mm |
| W 4 | 2.7mm | L 2 | 22.5mm |
| W 5 | 3.3mm | L 3 | 20.5mm |
| R 1 | 47Ω | R 2 | 47Ω |
Wherein, W
1The width of the vertical transmission line of the expression sphere of movements for the elephants type structure leftmost side, W
2The width of vertical transmission line in the middle of the expression sphere of movements for the elephants type structure, W
3The width of the vertical transmission line of the expression sphere of movements for the elephants type structure rightmost side, W
4The width of the horizontal transport line in the middle of the expression sphere of movements for the elephants type structure left side, W
5The width of the horizontal transport line in the middle of expression sphere of movements for the elephants type structure the right, W
6The width of the horizontal transport line on the expression sphere of movements for the elephants type structure upper/lower terminal left side, W
7The width of the horizontal transport line on expression sphere of movements for the elephants type structure upper/lower terminal the right.L
1The length of every section vertical transmission line of expression sphere of movements for the elephants type structure, L
2The length of every section horizontal left side of expression sphere of movements for the elephants type structure transmission line, L
3The length of every section level the right of expression sphere of movements for the elephants type structure transmission line.Isolation resistance R
1And R
2Value equate.
Shown in a～c of Fig. 2, be respectively the schematic diagram of merit proportion by subtraction, isolation and the reflection coefficient of port loss characteristic of the emulation of 1:2:1 power splitter and object test.Shown in a of Fig. 2, the fine but loss of merit proportion by subtraction measured result and simulation result consistency is 0.3dB slightly approximately.In the 2.1GHz-2.7GHz scope, the power-division ratios S31 of port PortC and port PortA is about-and 3.3dB is to-3.7dB, the power-division ratios S41 of the power-division ratios S21 of PortB and PortA and PortD and PortA is about-and 6dB is to-6.7dB, and merit divides ratio error less than ± 0.3dB.Shown in the b of Fig. 2, isolation measured result and simulation result trend are basic identical, index is also basically identical, in 2.0GHz-2.8GHz, the isolation between port PortB and port PortC, port PortC and port PortD, port PortB and port PortD all excellent (low) in-20dB.Shown in the c of Fig. 2, there is some difference for the measured result of return loss characteristic and simulation result, and particularly the return loss S44 of the return loss S22 of port PortB and port PortD also slightly has deviation than the obvious increase of simulation value and variation tendency; Return loss worsens about 3dB all less than-16dB than simulation value in 1.9GHz-2.9GHz, but substantially can satisfy the requirement that most microwave circuits mate power splitter; Welding is caused this difference by sub-miniature A connector.Abscissa among Fig. 2 represents frequency, and ordinate represents merit proportion by subtraction or isolation or the return loss take dB as unit.
The connection conventional method that power splitter housing 5 is connected with wiring board is to use rivet or screw fixedly power splitter housing and wiring board reverse side cover copper face, this sampling point contact can not guarantee good ground connection performance, the present invention is directed to this deficiency, adopted at power splitter housing 5 reverse side and punched, conducting resinl is poured into wiring board 4 reverse side cover copper face, then the reverse side of power splitter housing 5 and wiring board 4 is covered copper face and be bonded.By facts have proved the method that pours into conducting resinl provided by the present invention, the face contact can stick to one the copper face that covers of power splitter housing 5 and wiring board 4, abundant ground connection, function admirable.Power splitter housing 5 reverse side are made a call to 8 some holes, 8 some hole minute parallel two rows, and every row evenly distributes.
Claims (6)
1. novel microstrip line three road power splitters in broadband, comprise power splitter input (1), power splitter main body (2), power splitter output (3), wiring board (4) and power splitter housing (5), it is characterized in that, power splitter housing (5) surrounds except the front other five of wiring board (4), and is fixedly connected with together with wiring board (4); Power splitter main body (2) adopts printed circuit technique, process sphere of movements for the elephants type structure in the front of wiring board (4), this structure comprises microstrip transmission line and two isolation resistances that are parallel to ground that connect 12 sections different characteristic impedances that are the sphere of movements for the elephants type, the length of each section microstrip transmission line all is the quarter-wave under the central task frequency; Three nodes on sphere of movements for the elephants type structure right side connect respectively three power splitter outputs (3), and the intermediate node in left side connects power splitter input (1), and two other node connects respectively isolation resistance R
1And R
2The sphere of movements for the elephants type structure of power splitter main body (2) is symmetrical about horizontal center line axis.
2. three road power splitters according to claim 1, it is characterized in that, it is characterized in that described wiring board (4) is relative dielectric constant ε r=2.55, dielectric thickness H1=1mm and the high-performance double-sided copper-clad polytetrafluoroethylene microwave-medium sheet material that covers copper thickness H2=0.035mm.
3. three road power splitters according to claim 1 is characterized in that, described power splitter input (1) and power splitter output (3) be 50 ohm microstrip transmission lines of Application standard all.
4. three road power splitters according to claim 1, it is characterized in that, the punching of described power splitter housing (5) reverse side, after the reverse side that conducting resinl is poured into wiring board (4) covered copper face, the reverse side that conducting resinl is poured into wiring board (4) covers copper face and power splitter housing (5) is bonding.
5. three road power splitters according to claim 4 is characterized in that, the reverse side of described power splitter housing (5) is made a call to 8 some holes, 8 some hole minute parallel two rows, and every row evenly distributes.
6. three road power splitters according to claim 1 is characterized in that, described three road power splitters are three road power splitters of 1:2:1, adopt relative dielectric constant ε r=2.55, dielectric thickness H
1=1mm and cover copper thickness H
2The double-sided copper-clad polytetrafluoroethylene microwave-medium sheet material of=0.035mm is as substrate, the parameter of 12 sections transmission lines in the sphere of movements for the elephants type structure is: the width of the vertical transmission line of the sphere of movements for the elephants type structure leftmost side is 0.3mm, the width of the vertical transmission line in the middle of the sphere of movements for the elephants type structure is 0.5mm, the width of the vertical transmission line of the sphere of movements for the elephants type structure rightmost side is 0.3mm, the width of the horizontal transport line in the middle of the sphere of movements for the elephants type structure left side is 2.7mm, the width of the horizontal transport line in the middle of sphere of movements for the elephants type structure the right is 3.3mm, on the sphere of movements for the elephants type structure, the width of the horizontal transport line on the left side, lower two ends is 3.3mm, on the sphere of movements for the elephants type structure, the width of the horizontal transport line on the right, lower two ends is 3mm; The length of every section vertical transmission line is 24.1mm, and the length of every section horizontal transport line on the sphere of movements for the elephants type structure left side is 22.5mm, and the length of every section horizontal transport line on sphere of movements for the elephants type structure the right is 20.5mm; Isolation resistance R
1And R
2Be 47 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104669097A CN103000977A (en) | 2012-11-16 | 2012-11-16 | Broadband novel microstrip line three-way power divider |
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| CN2012104669097A CN103000977A (en) | 2012-11-16 | 2012-11-16 | Broadband novel microstrip line three-way power divider |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633406A (en) * | 2013-12-02 | 2014-03-12 | 天津光电通信技术有限公司 | Microstrip line power distributor of decimetric wave with equal distribution ratio |
| CN103646126A (en) * | 2013-11-01 | 2014-03-19 | 南京信息工程大学 | Design method of micro-strip array focusing antenna and micro-strip array focusing antenna |
| CN106207361A (en) * | 2016-08-01 | 2016-12-07 | 广东工业大学 | A kind of double dimension restructural orthocoupler |
| CN109103557A (en) * | 2018-07-11 | 2018-12-28 | 深圳振华富电子有限公司 | Three road power splitters |
| CN109766657A (en) * | 2019-01-25 | 2019-05-17 | 吉林大学 | A kind of Wilkinson power divider and preparation method thereof of Chebyshev's filtering characteristic with isolation frequency point alignment |
| CN112310589A (en) * | 2020-12-16 | 2021-02-02 | 中国电子科技集团公司第九研究所 | Ware is divided to outer merit of aerospace cabin |
| CN113410642A (en) * | 2021-06-09 | 2021-09-17 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | One-to-four power division feed network of broadband antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956621A (en) * | 1987-12-08 | 1990-09-11 | Harris Corporation | Three-state, two-output variable RF power divider |
| US6078227A (en) * | 1998-08-24 | 2000-06-20 | Motorola, Inc. | Dual quadrature branchline in-phase power combiner and power splitter |
| RU2231177C1 (en) * | 2002-11-04 | 2004-06-20 | ОАО "НИИ Приборостроения им. В.В.Тихомирова" | Microstrip power divider with unequal division |
| CN101924265A (en) * | 2010-08-11 | 2010-12-22 | 安徽锦特微波电子有限公司 | Microwave and millimeter wave high-isolation power divider |
-
2012
- 2012-11-16 CN CN2012104669097A patent/CN103000977A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956621A (en) * | 1987-12-08 | 1990-09-11 | Harris Corporation | Three-state, two-output variable RF power divider |
| US6078227A (en) * | 1998-08-24 | 2000-06-20 | Motorola, Inc. | Dual quadrature branchline in-phase power combiner and power splitter |
| RU2231177C1 (en) * | 2002-11-04 | 2004-06-20 | ОАО "НИИ Приборостроения им. В.В.Тихомирова" | Microstrip power divider with unequal division |
| CN101924265A (en) * | 2010-08-11 | 2010-12-22 | 安徽锦特微波电子有限公司 | Microwave and millimeter wave high-isolation power divider |
Non-Patent Citations (1)
| Title |
|---|
| KEJIA DING，DONGLIN SU，FEI HE，YAZHOU WANG: "A Novel Microstrip Line Three-Way Power Divider", 《MICROWAVE, ANTENNA, PROPAGATION, AND EMC TECHNOLOGIES FOR WIRELESS COMMUNICATIONS (MAPE)2011 IEEE 4TH INTERNATIONAL SYMPOSIUM》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646126A (en) * | 2013-11-01 | 2014-03-19 | 南京信息工程大学 | Design method of micro-strip array focusing antenna and micro-strip array focusing antenna |
| CN103633406A (en) * | 2013-12-02 | 2014-03-12 | 天津光电通信技术有限公司 | Microstrip line power distributor of decimetric wave with equal distribution ratio |
| CN106207361A (en) * | 2016-08-01 | 2016-12-07 | 广东工业大学 | A kind of double dimension restructural orthocoupler |
| CN106207361B (en) * | 2016-08-01 | 2018-12-18 | 广东工业大学 | A kind of restructural orthocoupler of double dimensions |
| CN109103557A (en) * | 2018-07-11 | 2018-12-28 | 深圳振华富电子有限公司 | Three road power splitters |
| CN109766657A (en) * | 2019-01-25 | 2019-05-17 | 吉林大学 | A kind of Wilkinson power divider and preparation method thereof of Chebyshev's filtering characteristic with isolation frequency point alignment |
| CN112310589A (en) * | 2020-12-16 | 2021-02-02 | 中国电子科技集团公司第九研究所 | Ware is divided to outer merit of aerospace cabin |
| CN113410642A (en) * | 2021-06-09 | 2021-09-17 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | One-to-four power division feed network of broadband antenna |
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Application publication date: 20130327 |