CN206379465U - A kind of compact microstrip line power distributing network - Google Patents
A kind of compact microstrip line power distributing network Download PDFInfo
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- CN206379465U CN206379465U CN201621355902.8U CN201621355902U CN206379465U CN 206379465 U CN206379465 U CN 206379465U CN 201621355902 U CN201621355902 U CN 201621355902U CN 206379465 U CN206379465 U CN 206379465U
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Abstract
The utility model belongs to antenna feed electro-technical field, and in particular to a kind of compact microstrip line power distributing network.This power distributing network includes the first power distribution sub-network and the second power distribution sub-network on one point of six tunnel；It is connected between first power distribution sub-network and the second power distribution sub-network by the Wilkinson power divider with phase shifter；First power distribution sub-network is with being respectively connected with phase shift micro-strip line segment at other branch ports of the second power distribution sub-network, eight coaxial feed probes are accordingly arranged in four phase shift micro-strip line ends and total port of four groups of Wilkinson power dividers respectively and vertical is located in through dielectric-slab so as to be connected to the metal.It has volume compact, the amplitude of each port and the small advantage of phase error concurrently to the utility model, and may be such that using the antenna of the power distributing network possess pointing accuracy height and the low superperformance of secondary lobe.
Description
Technical field
The utility model belongs to antenna feed electro-technical field, and in particular to a kind of compact microstrip line power distributing network.
Background technology
, it is necessary to reduce equipment volume in mobile communication, satellite communication, wireless sensing net node and wearable wireless device
Or more functional modules are accommodated in the confined space, therefore array antenna miniaturization is the inexorable trend of development, and power point
Distribution network is then essential important component in array antenna.In view of this, easy to process, small volume, lightweight, band
The wide moderate and power distributing network of conventional microstrip line style that is easily integrated is using extremely wide.However, conventional microstrip line style
Power distributing network is while above-mentioned advantage is possessed, and each port in the case where distribution port is more, frequency range is higher is consistent
Property poor, adjacent port between mutual coupling effect is strong so that each port of influence between amplitude and phase characteristic the problem of also more
It is prominent.Whether a kind of amplitude and phase error that have volume compact and each port small new microstrip line power distribution can be sought
Network, and then cause possess pointing accuracy height and the low superperformance of secondary lobe therewith using the antenna of the power distributing network, it is
Those skilled in the art's technical barrier urgently to be resolved hurrily in recent years.
The content of the invention
One of purpose of the present utility model is to overcome above-mentioned the deficiencies in the prior art can be while being two groups there is provided one kind
Array antenna provides the compact microstrip line power distributing network of power dividing function, and it has volume compact, the width of each port concurrently
Degree and the small advantage of phase error, and may be such that possess that pointing accuracy is high and secondary lobe is low using the antenna of the power distributing network
Superperformance.
To achieve the above object, the utility model employs following technical scheme：
A kind of compact microstrip line power distributing network, it is characterised in that：This power distributing network includes one point of six tunnel
First power distribution sub-network and the second power distribution sub-network, two groups of sub-networks are electric for the T-shaped work(point of mutually isostructural three-level
Road, and every group of sub-network six branch ports according to Chebyshev 25dB amplitude weightings be distributed；The branch of two groups of sub-networks
Port is toward each other；The branch port that two two grades of T-shaped power-devided circuits of first power distribution sub-network are formed and the second work(
Between the branch port that the T-shaped power-devided circuit of one pair of which three-level of rate distribution sub-network is formed, and the second power distribution
The one pair of which three-level T of the branch port that two two grades of T-shaped power-devided circuits of network are formed and the first power distribution sub-network
It is connected between the branch port that type power-devided circuit is formed by the Wilkinson power divider with phase shifter；First power
Another pair of branch port and the second power distribution sub-network that the T-shaped power-devided circuit of another pair three-level of distribution sub-network is formed
Phase shift micro-strip line segment is respectively connected with the branch port that the T-shaped power-devided circuit of three-level is formed；Each sub-network, phase shift microstrip line
Section and Wilkinson power divider is on same micro-strip face and the micro-strip face is attached at the wherein side plate face of dielectric-slab,
At another lateral plates of dielectric-slab with covering metal, eight coaxial feed probes are accordingly arranged in four phase shift micro-strip line segments respectively
End and total port of four groups of Wilkinson power dividers and vertical are located in through dielectric-slab so as to be connected to the metal.
The phase shifter for being used to connect each sub-network respective branch port is symmetrically distributed in the two of Wilkinson power divider
At individual branch port, 100 Ω isolation resistances have also been bridged at two branch ports of Wilkinson power divider.
The side plate face that being used on dielectric-slab attaches micro-strip face is arranged with vallecular cavity, so that micro-strip face is total to the vallecular cavity
Air back of the body chamber is formed with enclosing, trend and each sub-network, phase shift micro-strip line segment and the Wilkinson work(point of the air back of the body chamber
The deposition path of device is consistent.
The housing depth direction of chamber is carried on the back by air of medium plate thickness direction, the air back of the body chamber is highly 3mm.
Material used in dielectric-slab is the sheet materials of Rogers 4350, and its dielectric constant is 3.66, and thickness is 0.508mm.
The beneficial effects of the utility model are：
1), the utility model effectively solves the power distributing network of conventional microstrip line style distribution port is more, frequency
In the case that section is higher port uniformity is poor, the mutual coupling effect between adjacent port is strong or even influences the width between each port
The problem of degree and phase characteristic.By such scheme, the utility model is matched somebody with somebody by the power distribution sub-network on two groups of one point of six tunnels
Close phase shift micro-strip line segment and Wilkinson power divider, on the one hand, make use of the power distribution sub-network on two groups of one point of six tunnels
Mutually use characteristic so that device overall volume is smaller, and structure is more compact, and can be simultaneously positioned at dielectric-slab metal at side
A group pattern antenna used, you can to save space, Miniaturization Design is realized again, the multi-functional of antenna can be realized again
Change.On the other hand, the Wilkinson power divider with phase shifter, causes the power distribution sub-network on two groups of one point of six tunnels mutual again
Good amplitude characteristic and phase characteristic are obtained while with network.Wherein, one point of six tunnel power distribution sub-network should
It is made up of the T-shaped power-devided circuit of three-level, and the energy for being finally allocated to six ports should add according to Chebyshev's 25dB amplitudes
Power is distributed, and using the method broadening beam angle of phase weighting.Wilkinson power divider is then entered by coaxial feed probe
The phase shifter of arc-shaped flaky is respectively carried at row feed, two branch ports of constant amplitude output constant amplitude input in other words, the purpose is to
Ensure phase characteristic during power division network combination.The effect of phase shift micro-strip line segment is the microstrip line power distributing network for ensureing finally to synthesize
The phase of each port of network meets the phase value of beam-broadening.
From the foregoing, it will be observed that the utility model is as a result of above-mentioned matching network optimisation technique so that its to have volume concurrently tight
Gather, the amplitude of each port and the small advantage of phase error, and may be such that using the antenna of the power distributing network possess covering
Scope is wide, pointing accuracy is high and the low superperformance of secondary lobe.Power distributing network in working frequency range input impedance close to 50
Ω, working frequency range matching is good, VSWR is relatively low, can be widely applied in antenna feeder radar system.
2), as the further preferred scheme of such scheme, phase shifter can select arc-shaped micro-strip line constitute, and in cloth
Put at two branch ports of Wilkinson power divider, so as to be used as two branch ports and power of connection Wilkinson power divider
Distribute the joining section of each branch port of sub-network.Further, since vallecular cavity is carried on the back so as to form air at the co-ordination medium plate of micro-strip face
The construction of chamber, so as to effectively suppress the higher mode and energy loss that cavity resonance is brought so that the mutual coupling shadow between port
Sound is smaller, and port amplitude, phase performance are preferable.
Brief description of the drawings
Fig. 1 is the utility model positive structure schematic；
Fig. 2 is Fig. 1 I parts partial enlarged drawing；
Fig. 3 be metal, the lamination layer structure schematic diagram in dielectric-slab and micro-strip face；
Fig. 4 is the structure principle chart of Wilkinson power divider；
Fig. 5 is the even mould analysis principle figure of Wilkinson power divider；
Fig. 6 for the first power distribution sub-network of the present utility model total port S1 and the second power distribution sub-network it is total
Port S2 voltage standing wave ratio test chart；
Fig. 7 is the width of each branch port of the first power distribution sub-network in the case that signal is by total port S1 inputs
Spend distribution curve；
Fig. 8 is the phase of each branch port of the first power distribution sub-network in the case that signal is by total port S1 inputs
Bit distribution curve；
Fig. 9 is the width of each branch port of the first power distribution sub-network in the case that signal is by total port S2 inputs
Spend distribution curve；
Figure 10 is the phase of each branch port of the first power distribution sub-network in the case that signal is by total port S2 inputs
Bit distribution curve.
Each label and each component names corresponding relation of the present utility model are as follows in accompanying drawing：
A- micro-strips face
10- the first power distribution sub-network 20- the second power distribution sub-networks
30- phase shifter 40- Wilkinson power divider 41-100 Ω isolation resistances
50- phase shift micro-strip line segment 60- dielectric-slab 61- air back of the body chamber 70- metals
80- coaxial feed probes
Embodiment
For ease of understanding, this feed network structures for sentencing the microstrip array reception antenna of 3D traffic administration radar systems is
Example, following describe is made with reference to accompanying drawing to specific implementation structure of the present utility model and workflow：
The feeding network of the microstrip array reception antenna of above-mentioned 3D traffic administrations radar system is a kind of micro-strip linear heat generation rate point
Distribution network, the concrete composition and attachment structure of its antenna are：
Reference picture 1, the microstrip line power distributing network include the power distribution sub-network on two groups of one point of six tunnels, four groups carry
The Wilkinson power divider 40 of phase shifter 30 and four phase shift micro-strip line segments 50.Wherein：Power distribution on two groups of one point of six tunnels
The branch port of network toward each other, namely forms construction of the similar both hands finger fingertip to top.When showing in Fig. 1, first
The wherein four group of branches ports of the power distribution sub-network 20 of power distribution sub-network 10 and second are one-to-one in same respectively
On one straight line, and two other group of branches ports are then arranged as separate port.Above-mentioned four components at same straight line
Branch port is connected each other by the Wilkinson power divider 40 of the phase shifter 30 with arc shaped；And other separate port is then
Direct phase shift micro-strip line segment 50 of plugging into.It should be noted that：Because array antenna has Transceiver Features concurrently, therefore in said structure
In, six group of branches ports of the first power distribution sub-network 10 and the second power distribution sub-network 20 can both be used as output port
To send the signal sent by total port, it can be received again as input port by the branch end of Wilkinson power divider 40
The signal that gets of mouth and then sent by the total port for the power distribution sub-network that need to be distributed；The Chu Ge branches of Wilkinson power divider 40
Port and total port working situation are similarly.In total port of Wilkinson power divider 40 and the relative linking of phase shift micro-strip line segment 50
The other end of power distribution sub-network namely end are respectively provided with through hole, so as to be run through by coaxial feed probe 80 through this
Hole and via dielectric-slab 60 extension be connected to positioned at the another side of dielectric-slab 60 metal at 70.Metal 70 positions can be corresponding
Setting array antenna etc., so as to realize the transmission-receiving function of information.Air back of the body chamber as shown in Figure 1-2 can be set at dielectric-slab 60
61, so as to suppress higher mode and energy loss that cavity resonance is brought so that the mutual coupling between port is smaller, and lifts end
The amplitude and phase performance of mouth.
And shown in reference picture 1-2, each sub-network and corresponding Wilkinson power divider 40 and phase shift micro-strip line segment 50
Specifically annexation is：P1 to P6 is respectively the branch port of each power distribution sub-network on one point of six tunnel, by each branch port
The corresponding port of Wilkinson power divider 40 and phase shift micro-strip line segment 50, final company are connected according to being constructed shown in Fig. 1
Binding composition is as shown in Figure 1.Now, two groups one point six tunnel power distribution sub-networks are set using amplitude weighting and phase weighting
Meter, P1 to P6 ports amplitude-phase distribution is as shown in table 1 below.It is to preferably reduce day using amplitude weighting in above-mentioned
The secondary lobe of line, and use phase weighting to be for the beam angle of further broadening antenna.
Table 1
| Port | Normalize amplitude distribution (W) | Normalize phase distribution (°) |
| P1 | 0.39 | -35 |
| P2 | 0.73 | -12.5 |
| P3 | 1 | 0 |
| P4 | 1 | 0 |
| P5 | 0.73 | -12.5 |
| P6 | 0.39 | -35 |
In Fig. 3, it can be seen that the specific putting position of each layer of microstrip line power distributing network：Whole new microstrip line work(
The micro-strip face a that is formed of rate distribution network is located at the side of dielectric-slab 60, the opposite side of dielectric-slab 60 for metal 70.
The circuit theory diagrams of Wilkinson power power splitter are as shown in figure 5, even mould analysis principle figure such as Fig. 6 institutes of circuit
Show.In Fig. 5-6, energy is inputted by port 1, and constant amplitude is assigned to port 2 and port 3 with phase, and the resistance of isolation resistance 41 is 100
Ω。
Effect of the present utility model can be further illustrated by following experiment test：
To show service behaviour, above structure and data creating test block can be used herein, following test operation is carried out：
Test environment：Microwave Measurement And Adjustment room；
Test equipment：Vector network analyzer；
The total port S1 of the first power distribution sub-network 10 and the total port S2 of the second power distribution sub-network 20 to test block
Voltage standing wave ratio, tested in 24~24.3GHz band limits.Test result is as shown in Figure 6：Can from Fig. 6
Go out, the equal ＜ 1.4 of standing wave of two ports realizes preferable impedance matching property.When the signal of test block is defeated from total port S1
Fashionable, now each branch port forms output port, and amplitude distribution and phase distribution to each output port are tested, and tests
As a result as shown in Figure 7 and Figure 8：From figure 7 it can be seen that in 24~24.3GHz band limits, the amplitude distribution error of each port
Less than ± 0.5dB, amplitude fluctuation is less than ± 0.3dB.From figure 8, it is seen that in 24~24.3GHz band limits, each port
Phase distribution error be less than ± 1 °, preferably, amplitude and phase are equal for port P1 and P6, P2 and P5, P3 and P4 phase equalization
Meet design objective.When the signal of test block is inputted from total port S2, the amplitude distribution and phase distribution of each branch port are entered
Row test：Now each branch port forms output port, and test result is as shown in Figure 9 and Figure 10.From fig. 9, it can be seen that 24
In~24.3GHz band limits, the amplitude distribution error of each port is less than ± 0.5dB, and amplitude fluctuation is less than ± 0.3dB.From figure
10 as can be seen that in 24~24.3GHz band limits, the phase distribution error of each port is less than ± 1 °, port P1 and P6, P2
Phase equalization with P5, P3 and P4 is preferable, and amplitude and phase are satisfied by design objective.
To sum up, amplitude distribution of the present utility model and phase distribution test result are shown by test block：Two groups one point
The matching property of six tunnel power distribution sub-networks is good, with preferable uniformity, it is clear that also possess the feasibility of batch production.
Claims (5)
1. a kind of compact microstrip line power distributing network, it is characterised in that：This power distributing network includes the of one point of six tunnel
One power distribution sub-network (10) and the second power distribution sub-network (20), two groups of sub-networks are T-shaped for mutually isostructural three-level
Power-devided circuit, and every group of sub-network six branch ports according to Chebyshev 25dB amplitude weightings be distributed；Two groups of sub-networks
Branch port toward each other；The branch end that two two grades of T-shaped power-devided circuits of the first power distribution sub-network (10) are formed
Between the branch port that the T-shaped power-devided circuit of one pair of which three-level of mouth and the second power distribution sub-network (20) is formed, and
The branch port that two two grades of T-shaped power-devided circuits of second power distribution sub-network (20) are formed and the first power distribution subnet
By the Weir with phase shifter (30) between the branch port that the T-shaped power-devided circuit of one pair of which three-level of network (10) is formed
The gloomy power splitter (40) of gold is connected；Point that the T-shaped power-devided circuit of another pair three-level of first power distribution sub-network (10) is formed
It is all connected with the branch port that the T-shaped power-devided circuit of another pair three-level of branch port and the second power distribution sub-network (20) is formed
There is phase shift micro-strip line segment (50)；Each sub-network, phase shift micro-strip line segment (50) and Wilkinson power divider (40) are in
On the same micro-strip face and micro-strip face is attached at the wherein side plate face of dielectric-slab (60), another lateral plates of dielectric-slab (60)
Place with covering metal (70), eight coaxial feed probes (80) be accordingly arranged in respectively four phase shift micro-strip line segment (50) ends with
And total port of four groups of Wilkinson power dividers (40) and vertical through dielectric-slab (60) so as to being connected to the metal
(70) place.
2. a kind of compact microstrip line power distributing network according to claim 1, it is characterised in that：It is described to be used to connect
The phase shifter (30) of each sub-network respective branch port is symmetrically distributed at two branch ports of Wilkinson power divider (40),
100 Ω isolation resistances (41) have also been bridged at two branch ports of Wilkinson power divider (40).
3. a kind of compact microstrip line power distributing network according to claim 1 or 2, it is characterised in that：Dielectric-slab
(60) the side plate face that being used on attaches micro-strip face is arranged with vallecular cavity, so that micro-strip face encloses to be formed jointly with the vallecular cavity
Air back of the body chamber (61), the trend and each sub-network, phase shift micro-strip line segment (50) and Wilkinson work(of the air back of the body chamber (61)
Divide the deposition path of device (40) consistent.
4. a kind of compact microstrip line power distributing network according to claim 3, it is characterised in that：With dielectric-slab (60)
Thickness direction is the housing depth direction that air carries on the back chamber (61), and the air back of the body chamber (61) is highly 3mm.
5. a kind of compact microstrip line power distributing network according to claim 1 or 2, it is characterised in that：Dielectric-slab
(60) material used in is the sheet materials of Rogers 4350, and its dielectric constant is 3.66, and thickness is 0.508mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621355902.8U CN206379465U (en) | 2016-12-09 | 2016-12-09 | A kind of compact microstrip line power distributing network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621355902.8U CN206379465U (en) | 2016-12-09 | 2016-12-09 | A kind of compact microstrip line power distributing network |
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| Publication Number | Publication Date |
|---|---|
| CN206379465U true CN206379465U (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621355902.8U Expired - Fee Related CN206379465U (en) | 2016-12-09 | 2016-12-09 | A kind of compact microstrip line power distributing network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767402A (en) * | 2018-09-14 | 2018-11-06 | 成都天奥电子股份有限公司 | A kind of microstrip probe printed board be inserted into waveguide and there is two-way broadband work(to divide |
-
2016
- 2016-12-09 CN CN201621355902.8U patent/CN206379465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767402A (en) * | 2018-09-14 | 2018-11-06 | 成都天奥电子股份有限公司 | A kind of microstrip probe printed board be inserted into waveguide and there is two-way broadband work(to divide |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170804 Termination date: 20211209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |