CN107464993A - Integrated broadband minimizes and the monopulse antenna array of poor phase comparing network - Google Patents
Integrated broadband minimizes and the monopulse antenna array of poor phase comparing network Download PDFInfo
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- CN107464993A CN107464993A CN201710549497.6A CN201710549497A CN107464993A CN 107464993 A CN107464993 A CN 107464993A CN 201710549497 A CN201710549497 A CN 201710549497A CN 107464993 A CN107464993 A CN 107464993A
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- coupler
- phase comparing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention devises the monopulse antenna array of a kind of integrated broadband miniaturization and poor phase comparing network, including minimized wide-band plane and poor phase comparing network and plane Yagi spark gap array antenna；Minimized wide-band plane and poor phase comparing network are made up of two-sided parallel strips, including first order network and second level network, first order network includes first order annular coupler, second level network includes two second level annular couplers, coupler annular section is provided with phase inverter, and passing through plated-through hole between phase inverter is upper and lower two layers forms electrical connection.Invention increases the bandwidth with poor phase comparing network, and there is smaller physical dimension, work(more T-shaped than in general divides the size of feeding network also small, while does not need feeding network to the transition structure between antenna；Unitary construction enormously simplify using planar structure, difficulty of processing is low, is easy to mass produce, and is easy to integrate with other planar circuits, is especially suitable for being integrated in radar system, installation and debugging are extremely convenient.
Description
Technical field
The antenna being related in monopulse radar system, it is to be related to more specifically the invention belongs to antenna technical field
A kind of integrated broadband miniaturization and the monopulse antenna array of poor phase comparing network.
Background technology
Monopulse radar is a kind of high-accuracy tracking beam radar.Monopulse radar can within a pulse period,
The whole directional informations and range information of target are obtained, orientation is precisely and interference resistance is strong.Monopulse antenna is as pulse thunder
The key component reached has been largely fixed the performance of monopulse radar, therefore the research to monopulse antenna has important meaning
Justice.More using parabola antenna, Cassegrain antenna etc., its corresponding phase comparing network also more to be adopted traditional monopulse radar
With metal waveguide structure, therefore have that volume is big, weight is big, complicated, cost is high and is not easy to integrate with other planar circuits
The shortcomings that.Further, since the bandwidth of traditional and poor phase comparing network is narrow, whole aerial array or even radar system can be limited
The bandwidth of system.
The content of the invention
To solve the above problems, the present invention devises a kind of compact-sized, broadband, is easily integrated and production cost is relatively low
Plane monopulse antenna.
In order to achieve the above object, the present invention provides following technical scheme：
Integrated broadband minimizes and the monopulse antenna array of poor phase comparing network, including minimized wide-band plane and difference
Phase comparing network and plane Yagi spark gap array antenna array；The minimized wide-band plane and poor phase comparing network are by two-sided flat
Row band line is formed, including first order network and second level network, first order network include first order annular coupler, second level net
Network includes two second level annular couplers, and annular couplers at different levels are respectively provided with four ports, and coupler annular section is provided with
Phase inverter, pass through plated-through hole between phase inverter is upper and lower two layers and form electrical connection, two inputs of first order annular coupler
The same mutually output of constant amplitude and then realization and wave beam are realized in port one, and another is realized constant amplitude anti-phase output and then realizes difference beam,
Second level annular coupler is constant amplitude with mutually exporting, two output ports of first order annular coupler respectively with second level network
In two second level annular couplers form electrical connection；The plane Yagi spark gap array antenna includes director dipole and reflecting plate.
Further, it is provided with trapezoidal open stub in the annular coupler.
Further, the trapezoidal open stub is four, is uniformly arranged in annular coupler.
Further, the first order annular coupler has the same phase of constant amplitude/anti-phase two kinds of output modes.
Compared with prior art, the invention has the advantages that and beneficial effect：
1. by using a kind of New Ring-like Type coupler of integrated inverter structure, add and poor phase comparing network
Bandwidth, solve the problems, such as and poor phase comparing network arrowband.
2. having smaller physical dimension, work(more T-shaped than in general divides the size of feeding network also small, while need not feed
Network is to the transition structure between antenna.
3. enormously simplify unitary construction using planar structure, difficulty of processing is low, is easy to mass produce, and be easy to it
Its planar circuit integrates, and is especially suitable for being integrated in radar system, installation and debugging are extremely convenient.
4. antenna is only formed with single-layer medium plate and upper and lower double layer of metal coating and a small amount of plated-through hole, medium in example
Plate uses FR4, cheap, effectively reduces the cost of whole antenna.
Brief description of the drawings
Fig. 1 is that integrated broadband provided by the invention miniaturization and the monopulse antenna array structure of poor phase comparing network show
It is intended to.
Fig. 2 is annular coupler dimensional structure diagram.
Fig. 3 is annular coupler two layers of separated position schematic diagram up and down, wherein (a) and (b) is respectively first layer and second
Layer schematic diagram.
Fig. 4 is phase inverter dimensional structure diagram.
Fig. 5 is the size indication figure of single Yagi antenna unit and annular coupler.
Fig. 6 is the obverse and reverse structural representation of a monopulse antenna array.
Fig. 7 is the test result of Fig. 6 antenna input S parameters.
Fig. 8 is the E faces of Fig. 6 antennas, H surface radiation Pattern measurement results, wherein (a) is and wave beam, (b) are difference beam.
Description of reference numerals：
101- annular couplers, 102- phase inverters, 103- plated-through holes, the trapezoidal open stubs of 104-, 105- are guided into
Oscillator, 106- reflecting plates, 107- dielectric substrates.
Embodiment
Technical scheme provided by the invention is described in detail below with reference to specific embodiment, it should be understood that following specific
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
As shown in figure 1, the monopulse antenna array of integrated broadband miniaturization and poor phase comparing network, including miniaturization are wide
Band plane and poor phase comparing network and plane Yagi spark gap array antenna.Wherein minimized wide-band plane and poor phase comparing network by
Multiple small-sized Wideband miniaturization annular coupler (lower referred to as annular coupler 101) compositions, due to introducing phase inverter,
Whole network is using the symmetrical two-sided parallel strips structure of upper/lower layer metallic.
As shown in Figure 2 to 4, coupler annular section is provided with phase inverter 102 to the structure of annular coupler 101, such as Fig. 4 institutes
Show, be provided with plated-through hole 103 above and below phase inverter between two layers, the coupler passes through 2 metallization in two-sided parallel strips
Through hole 103 make it that the signal of transmission line and ground exchange are anti-phase so as to realize, i.e., phase increases by 180 °, and common annular coupler leads to
180 ° of transmission line is crossed to realize, so coupler new construction just saves the size of 180 ° of transmission lines in the present invention.While this
Kind of phase inverter can provide the bandwidth more widened, so that annular coupler is than traditional annular coupler bandwidth more in the present invention
It is wide.In addition, being additionally provided with four trapezoidal open stubs 104 in the ring-shaped inner part of annular coupler 101, open stub is less
One end is uniformly distributed towards annular center, four trapezoidal open stubs 104 in annular coupler interior edge ring.Need what is illustrated
It is that the shape of trapezoidal open stub 104 is not to be regular trapezoidal, because its larger one end is on ring, therefore big end edge
Edge is arc.Trapezoidal open stub design makes the smaller of annular coupler.Test result shows, compared to the ring-like coupling of tradition
Clutch, the annular coupler size in the present invention is original 10%, and relative bandwidth reaches 80%.Annular coupler 101
There are two kinds of mode of operations, one kind is that constant amplitude exports with phase, so can be used for the power division network of aerial array；Another kind is constant amplitude
Anti-phase output, can so realize phase differ 180 ° and poor phase comparing network.Specifically, as shown in figure 1, annular coupling
When clutch has four ports, respectively port 1, port 2, port 3, the input of the port of port 4,1,2,3 port constant amplitudes are the same as mutually defeated
Go out, 4 port isolations；When 4 ports input, 2,3 port constant amplitude anti-phase outputs, 1 port isolation.Isolated port connects the guarantee of 50 Ω resistance
Matching.
The minimized wide-band and poor phase comparing network bag designed based on this minimized wide-band annular coupler, the present invention
Including first order network and second level network, port one (Port1) input is and wave beam that port two (Port2) input is difference beam,
As shown in Figure 1.Second level network is constant amplitude with mutually output.Specifically, first order network includes first order annular coupler, the
Two grade network includes two second level annular couplers, and the first order and second level annular coupler structure are knot described in leading portion
Structure.2,3 ports of first order annular coupler respectively with the shape of port 1 in two second level annular couplers in the network of the second level
Into electrical connection, 1,4 ports are input port, are reversely exported for constant amplitude with mutually output, the input of port 4 for constant amplitude when port 1 inputs,
Port 4 in the annular coupler of the second level isolates and connects 50 Ω resistance.
Plane Yagi spark gap array antenna includes seven director dipoles 105 and a pair of reflecting plates 106, the gain of single antenna reach
10dBi, and the relative bandwidth of antenna element reaches 25%.Group battle array aft antenna reaches 14dBi, difference beam gain with beam gain
12.5dBi, null 28dB.
Such as the complete monopulse antenna schematic diagram that Fig. 1 is integrated broadband miniaturization and poor phase comparing network, whole antenna
Array is arranged on dielectric substrate 107, and filled black is front description in figure, and black oblique line is reverse side pattern, and the first order is annular
Coupler 101 is realized and difference compares；The second level is that constant amplitude exports with phase, realizes the effect of power division network.Usual feeding network
Monopulse antenna is needed from two-sided parallel strips-microstrip line-coaxial fitting conversion, the present invention due to the sum for applying new construction
Poor phase comparing network, it is only necessary to from two-sided parallel strips-coaxial fitting, eliminate middle change-over circuit.Antenna port one
(Port1) input is and wave beam that port two (Port2) input is then difference beam.
Implement data：
The size of single Yagi antenna unit and the size of annular coupler are shown in Fig. 5, table 1 below is a pulse
The specific size of aerial array.
| Parameter | It is worth (mm) | Parameter | It is worth (mm) | Parameter | It is worth (mm) | Parameter | It is worth (mm) |
| W50 | 2 | Ld2 | 30 | Ld4 | 28 | Ld6 | 28 |
| Lref | 30 | Wd2 | 8 | Wd4 | 8 | Wd6 | 8 |
| Wref | 14 | Ls2 | 15 | Ls4 | 17 | Ls6 | 18 |
| Ds | 3 | Ld3 | 28 | Ld5 | 28 | Ld7 | 29 |
| Wm | 6 | Wd3 | 8 | Wd5 | 8 | Wd7 | 9 |
| Lm | 19.5 | Ls3 | 17 | Ls5 | 17 | Ls7 | 20 |
| Ld | 23 | W1 | 1.9 | L2 | 4 | L1 | 5.6 |
| Ld1 | 28 | W2 | 5.95 | ds | 0.1 | Wa | 75 |
| Wd1 | 6 | Ls1 | 12.5 | Ws | 0.4 | R | 0.05 |
Fig. 6 is the structural representation of the aerial array.Whole aerial array is produced on medium base using planar circuit technique
On piece.The FR4 copper clad plates that the dielectric constant that dielectric substrate employs that thickness is 1mm in example is 4.4.Fig. 7 is in actual antennas
Two input ports at S parameter test result.Fig. 8 is the radiation pattern with difference beam.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (4)
1. integrated broadband minimizes and the monopulse antenna array of poor phase comparing network, it is characterised in that：It is wide including miniaturization
Band plane and poor phase comparing network and plane Yagi spark gap array antenna array；The minimized wide-band plane and poor phase bit comparison net
Network is made up of two-sided parallel strips, including first order network and second level network, and first order network includes first order annular coupling
Device, second level network include two second level annular couplers, and annular couplers at different levels are respectively provided with four ports, coupler annular
Part is provided with phase inverter, and passing through plated-through hole between phase inverter is upper and lower two layers forms electrical connection, first order annular coupler
Two input ports one realize constant amplitude with mutually export so that realize and wave beam, another realizes constant amplitude anti-phase output and then reality
Existing difference beam, second level annular coupler are constant amplitude with mutually exporting, two output ports of first order annular coupler respectively with
Two second level annular couplers form electrical connection in the network of the second level；The plane Yagi spark gap array antenna include director dipole and
Reflecting plate.
2. integrated broadband miniaturization according to claim 1 and the monopulse antenna array of poor phase comparing network, it is special
Sign is：Trapezoidal open stub is provided with the annular coupler.
3. integrated broadband miniaturization according to claim 1 and the monopulse antenna array of poor phase comparing network, it is special
Sign is：The trapezoidal open stub is four, is uniformly arranged in annular coupler.
4. integrated broadband miniaturization according to claim 1 and the monopulse antenna array of poor phase comparing network, it is special
Sign is：The first order annular coupler has the same phase of constant amplitude/anti-phase two kinds of output modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549497.6A CN107464993B (en) | 2017-07-07 | 2017-07-07 | The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549497.6A CN107464993B (en) | 2017-07-07 | 2017-07-07 | The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107464993A true CN107464993A (en) | 2017-12-12 |
| CN107464993B CN107464993B (en) | 2019-08-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748426A (en) * | 2020-12-25 | 2021-05-04 | 电子科技大学 | Monopulse sum-difference network for long-distance high-resolution radar system |
| CN113703156A (en) * | 2021-08-23 | 2021-11-26 | 电子科技大学 | Quasi-optical monopulse antenna based on reflective phase correction mirror |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107233A (en) * | 1990-10-15 | 1992-04-21 | Hewlett-Packard Company | Amplitude correction of field coupled varactor tuned filters |
| CN1937316A (en) * | 2006-10-20 | 2007-03-28 | 东南大学 | Single-pulse chip integrated waveguide slot array antenna |
-
2017
- 2017-07-07 CN CN201710549497.6A patent/CN107464993B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107233A (en) * | 1990-10-15 | 1992-04-21 | Hewlett-Packard Company | Amplitude correction of field coupled varactor tuned filters |
| CN1937316A (en) * | 2006-10-20 | 2007-03-28 | 东南大学 | Single-pulse chip integrated waveguide slot array antenna |
Non-Patent Citations (1)
| Title |
|---|
| XIONG ZOU、CHUANG-MING TONG等: "SIW-Fed Yagi Antenna and Its Application on Monopulse Antenna", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748426A (en) * | 2020-12-25 | 2021-05-04 | 电子科技大学 | Monopulse sum-difference network for long-distance high-resolution radar system |
| CN112748426B (en) * | 2020-12-25 | 2022-10-11 | 电子科技大学 | Monopulse sum-difference network for long-distance high-resolution radar system |
| CN113703156A (en) * | 2021-08-23 | 2021-11-26 | 电子科技大学 | Quasi-optical monopulse antenna based on reflective phase correction mirror |
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| Publication number | Publication date |
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| CN107464993B (en) | 2019-08-02 |
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