CN203859214U - Integrated single-pulse feed source device - Google Patents
Integrated single-pulse feed source device Download PDFInfo
- Publication number
- CN203859214U CN203859214U CN201420199125.7U CN201420199125U CN203859214U CN 203859214 U CN203859214 U CN 203859214U CN 201420199125 U CN201420199125 U CN 201420199125U CN 203859214 U CN203859214 U CN 203859214U
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- sum
- difference network
- feed source
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- 239000004020 conductor Substances 0.000 claims abstract description 7
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 6
- 239000010432 diamond Substances 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Abstract
The utility model provides an integrated single-pulse feed source device, which comprises a feed source cover, four radiation units, a structural component and a sum-difference network, wherein the four radiation units in a diamond shape are arranged above the structural component; the sum-difference network is arranged below the structural component; the feed source cover covers the four radiation units; the sum-difference network comprises four signal input ends and three signal output ends; the four radiation units are respectively connected with the four signal input ends of the sum-difference network via coaxial conductors; and the three signal output ends respectively output sum signals, azimuth difference signals and pitch difference signals. According to the single-pulse feed source device, the sum-difference network box is omitted, the performance of the feed source is stable and reliable, and the structure is concise.
Description
Technical field
The utility model relates to a kind of feed source device of radar, especially a kind of feed source device of aerological sounding radar.
Background technology
The feed of aerological sounding radar is because only containing radiating element, and sum-difference network needs independent casing to install, and has increased the volume of system, brings difficulty to structural design, has also increased the cost of system.Meanwhile, between to sum-difference network and radiating element, adopt stube cable, increased the insertion loss of system, and the width phase inconsistency that also can bring of cable.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of by the Monopulse feed device of radiating element and sum-difference network integrated design.
In order to solve the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of integrated Monopulse feed device, comprise feed source cover, four radiating elements, structural member and sum-difference network, four radiating elements assume diamond in shape and are arranged on the top of structural member, sum-difference network is arranged on the below of structural member, feed source cover covers on four radiating elements, sum-difference network comprises four signal input parts and three signal output parts, four radiating elements are connected with four signal input parts of sum-difference network respectively by concentric conductor, three signal output parts are exported respectively and signal, gun parallax signal and trim signal.
Sum-difference network is directly installed on to the below of structural member, makes radiating element and sum-difference network integrated, without designing separately a sum-difference network case, reduced the volume of system, reduced system cost; Four radiating elements are assumed diamond in shape and are arranged on the top of structural member, can ensure the uniformity of four radiating element signals radiation; Adopt concentric conductor that four radiating elements are connected with sum-difference network, ensured the coupling of impedance.
As further restriction scheme of the present utility model, sum-difference network is the double-sided PCB that front is covered with sum-difference network microstrip line, the back side and covers ground.Front is covered with to double-sided PCB that sum-difference network microstrip line, the back side cover ground as sum-difference network, can further reduces the volume of system, and easy for installation.
As further restriction scheme of the present utility model, radiating element is printed subarray antenna.Adopt printed subarray antenna as radiating element, can further ensure bandwidth and consistency, and lightweight, be convenient to produce debugging.
The beneficial effects of the utility model are: (1) is directly installed on sum-difference network the below of structural member, make radiating element and sum-difference network integrated, without designing separately a sum-difference network case, have reduced the volume of system, have reduced system cost; (2) adopt concentric conductor that four radiating elements are connected with sum-difference network, ensured the coupling of impedance; (3) front is covered with to double-sided PCB that sum-difference network microstrip line, the back side cover ground as sum-difference network, can further reduces the volume of system, and easy for installation; (4) adopt printed subarray antenna as radiating element, can further ensure bandwidth and consistency, and lightweight, be convenient to produce debugging.
Brief description of the drawings
Fig. 1 is feed source device schematic diagram of the present utility model;
Fig. 2 is sum-difference network schematic diagram of the present utility model;
Fig. 3 is radiating element schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, integrated Monopulse feed device of the present utility model, comprise feed source cover 1, four radiating elements 2, structural member 3 and sum-difference network 4, four radiating elements 2 assume diamond in shape and are arranged on the top of structural member 3, sum-difference network 4 is arranged on the below of structural member 3, feed source cover 1 covers on four radiating elements 2, sum-difference network 4 comprises four signal input parts and three signal output parts, four radiating elements 2 are connected with four signal input parts of sum-difference network 4 respectively by concentric conductor 5, three signal output parts are exported respectively and signal, gun parallax signal and trim signal.In four radiating elements 2, localizer unit spacing is 0.67 λ, and pitching unit interval is 0.78 λ, and λ is radiation wavelength.Select this two kinds of unit intervals, first considered the beamwidth requirement of antenna, unit interval is excessive, and the beamwidth of antenna is too narrow, and unit interval is too small, and the beamwidth of antenna is too wide; Next has considered the mutual lotus root between antenna radiation unit, unit interval is too small, lotus root situation is serious mutually, unit interval is excessive, the beamwidth of antenna is too narrow, and the actinal surface occlusion effect of antenna can be very serious simultaneously, affects the global index of antenna system, selecting this two kinds of unit intervals, is that the properties optimization of antenna is selected afterwards.
Sum-difference network 4 is directly installed on to the below of structural member 3, make radiating element 2 and sum-difference network 4 integrated, without designing separately a sum-difference network case, reduce the volume of system, reduce system cost, and, also cancel stube cable longer between radiating element 2 and sum-difference network 4, reduce the width phase inconsistency that insertion loss and stube cable bring; Four radiating elements 2 are assumed diamond in shape and are arranged on the top of structural member 3, can ensure the uniformity of four radiating element 2 signal radiation, meet the radiation requirement of antenna; Adopt concentric conductor 5 that four radiating elements 2 are connected with sum-difference network 4, ensured the coupling of impedance.
As shown in Figure 2, in order further to reduce the volume of system, sum-difference network 4 can be designed to front and be covered with sum-difference network microstrip line 6, the back side and cover the double-sided PCB on ground.50 ohm of the impedances of the feed microstrip line of sum-difference network microstrip line 6, and the microstrip line impedance of poor comparator is that the output impedance of 70.7, three ports is 50 ohm.Double-sided PCB can be selected polytetrafluoroethylene double sided board, and the thickness of double-sided PCB is 1mm, and dielectric constant is 4.4, adopts sum-difference network microstrip line 6 to complete the function of sum-difference network, covers overleaf the interference that can reduce signal, ensures the stability of signal.Sum-difference network 4 is in the time of work, adopting Phase Stacking method to export Si road signal to four radiating elements 2 synthesizes, generation and signal, gun parallax signal and trim signal respectively, and by three signal output port outputs, in the time of three signal output port change in location of sum-difference network 4, the length of sum-difference network microstrip line 6 need be done corresponding adjustment, but relative length should remain unchanged.
As shown in figs. 1 and 3, in order further to ensure bandwidth and consistency, radiating element 2 is printed subarray antenna.The weight of printed subarray antenna is lighter, produces debugging after can facilitating.
Claims (3)
1. an integrated Monopulse feed device, it is characterized in that: comprise feed source cover (1), four radiating elements (2), structural member (3) and sum-difference network (4), described four radiating elements (2) assume diamond in shape and are arranged on the top of structural member (3), described sum-difference network (4) is arranged on the below of structural member (3), described feed source cover (1) covers on four radiating elements (2), described sum-difference network (4) comprises four signal input parts and three signal output parts, described four radiating elements (2) are connected with four signal input parts of sum-difference network (4) respectively by concentric conductor (5), described three signal output parts are exported respectively and signal, gun parallax signal and trim signal.
2. integrated Monopulse feed device according to claim 1, is characterized in that: described sum-difference network (4) is covered the double-sided PCB on ground for front is covered with sum-difference network microstrip line (6), the back side.
3. integrated Monopulse feed device according to claim 1, is characterized in that: described radiating element (2) is printed subarray antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199125.7U CN203859214U (en) | 2014-04-22 | 2014-04-22 | Integrated single-pulse feed source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199125.7U CN203859214U (en) | 2014-04-22 | 2014-04-22 | Integrated single-pulse feed source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859214U true CN203859214U (en) | 2014-10-01 |
Family
ID=51609054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199125.7U Expired - Lifetime CN203859214U (en) | 2014-04-22 | 2014-04-22 | Integrated single-pulse feed source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203859214U (en) |
-
2014
- 2014-04-22 CN CN201420199125.7U patent/CN203859214U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |