CN111628260A - Power distribution network with high power capacity - Google Patents
Power distribution network with high power capacity Download PDFInfo
- Publication number
- CN111628260A CN111628260A CN202010594303.6A CN202010594303A CN111628260A CN 111628260 A CN111628260 A CN 111628260A CN 202010594303 A CN202010594303 A CN 202010594303A CN 111628260 A CN111628260 A CN 111628260A
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- cover plate
- conductor layer
- central conductor
- strip line
- upper cover
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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Abstract
The invention provides a power distribution network with high power capacity, which adopts an air strip line structure, wherein the air strip line structure comprises an upper cover plate, a central conductor layer and a lower cover plate, and the upper cover plate and the lower cover plate are made of metal materials and are used as the ground of the air strip line; the central conductor layer is positioned between the upper cover plate and the lower cover plate and is equal to the distance between the upper cover plate and the lower cover plate, and the media on the two sides are air; the central conductor layer is a metal sheet, the outer shell is a structural member of an air strip line, all parts are connected and fixed, and the central conductor layer is not in contact with the outer shell; connectors are soldered to respective ports of the center conductor layer for signal transmission. The invention adopts the structure that the short-circuit branch line with the length of one quarter wavelength is added in the air strip line power divider, thereby greatly improving the capability of enduring higher power of the planar transmission line power divider.
Description
Technical Field
The invention relates to the field of microwave feed networks, and designs an air strip line-based power distribution network with high power capacity, which can simultaneously realize the characteristics of low loss, high power capacity and easy integration.
Background
The transmitting power of the system is increased, the acting distance of the radar can be obviously increased, and the interference effect in electronic countermeasure can be improved. Therefore, the microwave system with higher power has wide application prospect in the fields of radar, electronic countermeasure and the like. With the continuous increase of peak power, the system requirements for the performance of the transmission and transmitting system at the later stage are gradually increased. The power division network is used as an important component of a transmission and emission system, and whether the power division network can bear larger power directly determines whether a high-power system can realize high-efficiency energy transmission. A common high-power capacity power divider network is a waveguide power divider, and has the characteristics of high withstand voltage, low loss and the like. However, the waveguide has a large volume and cannot well meet the requirement of integration of a microwave system. Therefore, the power distribution network which has high power capacity and is easy to integrate has very important application value.
Disclosure of Invention
The invention provides a power division network with high power capacity, aiming at overcoming the defects of the prior art, and providing the power division network with high power capacity.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a power distribution network with high power capacity adopts an air strip line structure, wherein the air strip line structure comprises an upper cover plate, a central conductor layer and a lower cover plate; the upper cover plate and the lower cover plate are made of metal materials and are used as the ground of the air strip line; the central conductor layer is positioned between the upper cover plate and the lower cover plate and is equal to the distance between the upper cover plate and the lower cover plate, and the media on the two sides are air; the central conductor layer is a metal sheet, the outer shell is a structural member of an air strip line, all parts are connected and fixed, and the central conductor layer is not in contact with the outer shell; the connectors are welded on the ports of the central conductor layer and used for signal transmission;
the method comprises the steps of determining a part with larger bearing power of the air strip line through thermal simulation, avoiding an impedance transformation section of a central conductor layer, selecting a position to add a short-circuit branch line with the length of a quarter wavelength, connecting one end of the short-circuit branch line to the central conductor layer, lapping the other end of the short-circuit branch line on an outer shell, and enabling the length of the short-circuit branch line to be the quarter wavelength.
The distance between the upper cover plate and the lower cover plate is selected to be 3.5 mm.
The metal sheet thickness of the central conductor layer is 1 mm.
The invention has the beneficial effects that the structure that the short-circuit branch line with the length of one quarter wavelength is added in the air strip line power divider is adopted, so that the capability of enduring higher power of the planar transmission line power divider is greatly improved.
Drawings
Fig. 1 is a structural diagram of a power distribution network with high power capacity according to the present invention. Fig. 1(a) is a perspective view, and fig. 1(b) is a top view of the internal structure with the upper cover removed.
1-upper cover plate, 2-outer shell, 3-short branch line, 4-central conductor layer, 5-connector, 6-lower cover plate.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, the power distribution network with high power capacity proposed by the present invention is mainly composed of an upper cover plate (1), a lower cover plate (6), an outer shell (2), a short-circuit branch line (3), a central conductor layer (4) and a connector (5).
A power distribution network with high power capacity is designed based on an air strip line structure, wherein the air strip line structure comprises an upper cover plate (1), a central conductor layer (4) and a lower cover plate (6); wherein, the upper cover plate (1) and the lower cover plate (6) are made of metal materials and are used as the ground of the air strip line; the central conductor layer (4) is positioned between the upper cover plate (1) and the lower cover plate (6) and is equal to the distance between the upper cover plate (1) and the lower cover plate (6), and the distance is an air dielectric layer; in this embodiment, the spacing is chosen to be 3.5 mm. The central conductor layer (4) is a metal sheet with a thickness, in this embodiment 1 mm. The outer shell (2) is a structural member of an air strip line, the main function is to connect and fix all parts, and the central conductor layer (4) is not in contact with the outer shell (2). The power distribution network designed by the structure has the characteristics of low loss and easiness in integration. Connectors (5) are soldered to respective ports of the central conductor layer (4) for signal transmission.
The high power capacity characteristic of the power distribution network is realized by short-circuit branch wires (3). And determining the part of the air strip line with larger power bearing capacity through thermal simulation, wherein in the part, the impedance transformation section of the central conductor layer is avoided, and a short-circuit branch line (3) with the length of one quarter wavelength is selected and added at one position. As can be seen from fig. 1, the short-circuit stub (3) is connected at one end to the central conductor layer (4) and at the other end to the outer casing (2), ensuring a length of the short-circuit stub (3) of a quarter wavelength within the available space. By adding the short-circuit branch line (3) with the length of one-quarter wavelength on the center conductor layer of the air strip line, a part of heat of the center conductor layer (4) can be dissipated through the outer shell on the premise of not influencing the electrical performance of the power distribution network, so that the high-power-resistant capacity of the whole network is improved. The short-circuit branch line can support the central conductor and can obviously improve the capability of enduring higher power of the power distribution network.
Claims (3)
1. A power distribution network having high power capabilities, characterized by:
a power distribution network with high power capacity adopts an air strip line structure, wherein the air strip line structure comprises an upper cover plate, a central conductor layer and a lower cover plate; the upper cover plate and the lower cover plate are made of metal materials and are used as the ground of the air strip line; the central conductor layer is positioned between the upper cover plate and the lower cover plate and is equal to the distance between the upper cover plate and the lower cover plate, and the media on the two sides are air; the central conductor layer is a metal sheet, the outer shell is a structural member of an air strip line, all parts are connected and fixed, and the central conductor layer is not in contact with the outer shell; the connectors are welded on the ports of the central conductor layer and used for signal transmission;
the method comprises the steps of determining a part with larger bearing power of the air strip line through thermal simulation, avoiding an impedance transformation section of a central conductor layer, selecting a position to add a short-circuit branch line with the length of a quarter wavelength, connecting one end of the short-circuit branch line to the central conductor layer, lapping the other end of the short-circuit branch line on an outer shell, and enabling the length of the short-circuit branch line to be the quarter wavelength.
2. The power distribution network with high power capacity of claim 1, wherein:
the distance between the upper cover plate and the lower cover plate is selected to be 3.5 mm.
3. The power distribution network with high power capacity of claim 1, wherein:
the metal sheet thickness of the central conductor layer is 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594303.6A CN111628260A (en) | 2020-06-28 | 2020-06-28 | Power distribution network with high power capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594303.6A CN111628260A (en) | 2020-06-28 | 2020-06-28 | Power distribution network with high power capacity |
Publications (1)
| Publication Number | Publication Date |
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| CN111628260A true CN111628260A (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010594303.6A Pending CN111628260A (en) | 2020-06-28 | 2020-06-28 | Power distribution network with high power capacity |
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| CN (1) | CN111628260A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360490A (en) * | 2022-07-27 | 2022-11-18 | 中国船舶重工集团公司第七二四研究所 | Integrated air strip line power division sum-difference network and implementation method |
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2020
- 2020-06-28 CN CN202010594303.6A patent/CN111628260A/en active Pending
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Cited By (1)
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| CN115360490A (en) * | 2022-07-27 | 2022-11-18 | 中国船舶重工集团公司第七二四研究所 | Integrated air strip line power division sum-difference network and implementation method |
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Application publication date: 20200904 |
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| RJ01 | Rejection of invention patent application after publication |