CN118501819B - Miniaturized device Radar transceiver - Google Patents
Miniaturized device Radar transceiver Download PDFInfo
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- CN118501819B CN118501819B CN202410956393.7A CN202410956393A CN118501819B CN 118501819 B CN118501819 B CN 118501819B CN 202410956393 A CN202410956393 A CN 202410956393A CN 118501819 B CN118501819 B CN 118501819B
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- printed circuit
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- circuit board
- circuit
- radio frequency
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- 239000000463 material Substances 0.000 claims description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 238000003801 milling Methods 0.000 claims description 7
- 238000011161 development Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention relates to the technical field of radar transceivers, and particularly discloses a miniaturized radar transceiver which comprises a printed circuit board assembly, a low-frequency connector, a bottom plate, a cover plate B and a radio frequency connector, wherein the printed circuit board assembly consists of a plurality of layers of printed circuit boards, the low-frequency connector and electronic components, the top and the bottom of the printed circuit board assembly are respectively provided with the cover plate B, one corner of the cover plate B is provided with the cover plate A, the cover plates B at the top and the bottom form a box body for installing the printed circuit board assembly through the bottom plate, and one side of the radar transceiver is provided with a plurality of radio frequency connectors. Compared with the traditional radar transceiver, the invention uses fewer printed circuit board components, uses fewer bottom plates (or shells), cover plates, connectors and cable components, and obviously reduces the volume of the radar transceiver; while the weight, cost, development cycle of the product are significantly optimized relative to conventional radar transceivers.
Description
Technical Field
The invention relates to the technical field of radar transceivers, in particular to a miniaturized radar transceiver.
Background
The traditional radar transceiver is composed of a plurality of printed circuit board components, a plurality of bottom plates (shells or shell subchambers), a plurality of cover plates and the like, wherein the printed circuit board components are tightly locked through screws or sintered on the bottom plates (or shells) through welding flux, the cover plates are independently installed on different bottom plates (or shells) through screws, and then the different bottom plates (shells) are tightly locked together through screws to form a whole. Signal transmission between different backplanes (or housings) is accomplished using connectors and cable assemblies. Each backplane (or housing) requires the installation of multiple connectors and multiple signals between multiple backplanes (or housings) require the interconnection of multiple cable assemblies.
A plurality of bottom plates (or shells) of the traditional radar transceiver are reserved with more screw holes and deeper screw depths for integral assembly between different bottom plates (or shells); the base plate (or the shell) reserves a plurality of connector installation hole sites and slot positions besides the space which is necessary for the circuit function part; the cable assembly often requires reinforcement measures to ensure that the exposed connectors between the housings and the cable assembly are effectively protected, and thus additional separate cover plates or additional separate locking members are often designed.
In a typical Ku band (12 GHz to 18GHz band) four-channel radar transceiver design, it generally has 10 external radio frequency connectors and 1 low frequency connector. The product adopts 2 independent shells, and a plurality of groove-shaped sub-cavities and a plurality of cover plates are respectively designed on the upper surface and the lower surface of each shell, and a plurality of printed circuit board assemblies are arranged in the shells to respectively finish the functions of clock signal generation, local oscillation signal generation, receiving frequency conversion amplification, transmitting frequency conversion amplifier and the like. Often there are 3 or more sets of rf connectors and cable assemblies designed between 2 individual housings for 2 individual housing circuit interconnections, and at least 1 set of low frequency connectors and cable assemblies. At this time, the product as a whole uses at least 16 rf connectors and at least 3 low frequency connectors, and exposes 3 rf cable assemblies and 1 low frequency cable assembly externally. It is contemplated that 2 additional cover plates and multiple screws are used to secure the rf cable assembly and the low frequency cable assembly. According to the general technical means, in the typical example, the final volume of the product is not less than 1000 cubic centimeters and the weight is not less than 1000 grams.
It can be seen from the above that: the radar transceiver adopting the traditional scheme mainly has the following defects:
Firstly, the volume is big: the traditional radar transceiver has a large number of shells and cover plates, and a plurality of additional connectors, cable assemblies and the like, so that the volume of the traditional radar transceiver is relatively large; considering the large number of matched fasteners, reserving manual operation space for the fasteners and the like, the product is large in size;
secondly, the weight is large: because the whole body is mostly made of metal materials, the weight corresponding to the large volume is also larger;
Thirdly, the cost is high: the traditional radar transceiver has the defects of multiple types and numbers of related parts, and high design cost and processing cost; the structure is complex, the assembly procedures are many, and the assembly cost is high; more connectors and cable assemblies are required to be used, multiple specifications can be involved, and purchasing cost is high;
Fourth, the development period is long: the traditional radar transceiver has more design content, and particularly has the problems of designing a plurality of different shells and cover plates, designing a plurality of signal interconnection methods and the like, so that a designer is required to consume a large amount of working hours; the number of the parts and the materials is large, design errors are easy to occur, the success rate of one-time development is reduced, and the development period is delayed.
The traditional radar transceiver is comprehensively considered to have the defects of large volume, heavy weight, high cost, long development period and the like, and therefore the miniaturized radar transceiver is provided.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the prior art by providing a miniaturized radar transceiver.
In order to achieve the above purpose, the present invention provides the following technical solutions: the miniature radar transceiver comprises a printed circuit board assembly, a low-frequency connector, a bottom plate, a cover plate B and a radio frequency connector, wherein the printed circuit board assembly consists of a plurality of layers of printed circuit boards, the low-frequency connector and electronic components, the top and the bottom of the printed circuit board assembly are respectively provided with the cover plate B, a corner of the cover plate B is provided with the cover plate A, the cover plates B at the top and the bottom form a box body for installing the printed circuit board assembly through the bottom plate, and one side of the radar transceiver is provided with a plurality of radio frequency connectors;
The multilayer printed circuit board is made of FR-4 materials, the number of layers is 8, the thickness is 1 mm, and the length and the width are 13 cm;
the top layer of the multilayer printed circuit board is a main layer for distributing electronic components, the bottom layer is a small amount of radio frequency signal wiring layer, and the middle 6 layers are a stratum, a power layer, a bottom layer, a signal layer A, a signal layer B and a stratum respectively;
The electronic component comprises two local oscillator generating circuits, a power supply circuit, a work indicator circuit, a local oscillator generating circuit, a control circuit, a reference clock generating circuit, an external clock output end, a transmitting circuit intermediate frequency side, a transmitting circuit power output end, a transmitting circuit calibration output end, a receiving 1 circuit intermediate frequency output end, a receiving 1 circuit radio frequency input end, a receiving 2 circuit intermediate frequency output end, a receiving 2 circuit radio frequency input end, a receiving 3 circuit intermediate frequency output end and a receiving 3 circuit radio frequency input end.
As a preferable technical scheme of the invention, the low-frequency connector is selected from J30J-51ZKW-J low-frequency connectors, the core number of the connectors is 51, and the single-core working current is not lower than 1A.
As a preferable technical scheme of the invention, the bottom plate is made of aluminum alloy 6061 material and is integrally milled, the surface of the bottom plate is subjected to natural-color conductive oxidation treatment, the total thickness of the bottom plate is 10.5 mm, and the length and the width of the bottom plate are 139.5 mm; the number of the flanges of the bottom plate is 8, and the diameter of the flange unthreaded hole is 3.5 mm.
As a preferable technical scheme of the invention, 12 mounting holes matched with the radio frequency connector are formed in the bottom plate, a plurality of threaded holes are reserved in the bottom plate for mounting the printed circuit board assembly, the cover plate A and the cover plate B, grooves with different depths are formed in the bottom plate for mounting the printed circuit board assembly, and the groove depth is 8.5 millimeters to 9.5 millimeters.
As a preferable technical scheme of the invention, the cover plate A is made of aluminum alloy 6061 material and is integrally milled, the surface of the cover plate A is subjected to natural-color conductive oxidation treatment, the total thickness of the cover plate A is 2mm, the length and the width of the cover plate A are 42.5 mm and 35 mm respectively, and counter bores reserved on the cover plate A are used for being installed on a bottom plate.
As a preferable technical scheme of the invention, the cover plate B is made of an aluminum alloy 6061 material through integral milling, the surface of the cover plate B is subjected to natural-color conductive oxidation treatment, the total thickness of the cover plate B is 1 mm, the length and the width of the cover plate B are 137.5 mm, and a counter bore is reserved in the cover plate B for being installed on a bottom plate.
As a preferred embodiment of the present invention, the low frequency connector and the electronic component are soldered to a multilayer printed circuit board.
Compared with the prior art, the invention has the beneficial effects that: compared with the traditional radar transceiver, the invention uses fewer printed circuit board components, uses fewer bottom plates (or shells), cover plates, connectors and cable components, and obviously reduces the volume of the radar transceiver; while the weight, cost, development cycle of the product are significantly optimized relative to conventional radar transceivers.
1: The main circuit of the typical four-channel radar transceiver is integrated on the monolithic multilayer printed circuit board, and the integrated circuit has the complete functions of the typical four-channel radar transceiver;
2: radio frequency transmission lines are arranged on the upper surface and the lower surface of the monolithic multilayer printed circuit board, and a cross-layer vertical transition transmission line is used;
3: the number of assembly procedures is small, the process difficulty is low, and the method is applicable to the design of radar transceivers with different frequencies and different channel numbers.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a printed board assembly according to the present invention;
Fig. 3 is a circuit functional diagram of the present invention.
In the figure: the printed circuit board assembly 101, the low frequency connector 102, the bottom board 103, the cover board a104, the cover board B105, the radio frequency connector 106, the multi-layer printed circuit board 201, the two local oscillator generating circuit 301, the power supply circuit 302, the operation indicator circuit 303, the one local oscillator generating circuit 304, the control circuit 305, the reference clock generating circuit 306, the external clock generating circuit 307, the external clock output side circuit 308, the transmitting circuit intermediate frequency side circuit 309, the transmitting circuit power output side circuit 310, the transmitting circuit calibration output side circuit 311, the receiving 1 circuit intermediate frequency output side circuit 312, the receiving 1 circuit radio frequency input side circuit 313, the receiving 2 circuit intermediate frequency output side circuit 314, the receiving 2 circuit radio frequency input side circuit 315, the receiving 3 circuit intermediate frequency output side circuit 316, and the receiving 3 circuit radio frequency input side circuit 317.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Examples: the utility model provides a miniaturized radar transceiver, radar transceiver includes printed circuit board assembly 101, low frequency connector 102, bottom plate 103, apron B105 and radio frequency connector 106, printed circuit board assembly 101 comprises multilayer printed circuit board 201, low frequency connector 102, electronic components, the top and the bottom of printed circuit board assembly 101 all are equipped with apron B105, apron A104 is installed to a corner of apron B105, apron B105 of top and bottom constitutes a box body that is used for installing printed circuit board assembly 101 through bottom plate 103, a plurality of radio frequency connector 106 is installed to one side of radar transceiver.
The multilayer printed circuit board 201 is made of FR-4 material, and has 8 layers, 1 mm thickness and 13 cm length and width.
The top layer of the multilayer printed circuit board 201 is a main layer for distributing electronic components, the bottom layer is a small amount of radio frequency signal wiring layers, and the middle 6 layers are a stratum, a power supply layer, a bottom layer, a signal layer A, a signal layer B and a stratum respectively.
The electronic components include two local oscillator generating circuits 301, a power supply circuit 302, a work indicator circuit 303, a local oscillator generating circuit 304, a control circuit 305, a reference clock generating circuit 306, an external clock generating circuit 307, an external clock output end 308, a transmitting circuit intermediate frequency side 309, a transmitting circuit power output end 310, a transmitting circuit calibration output end 311, a receiving 1 circuit intermediate frequency output end 312, a receiving 1 circuit radio frequency input end 313, a receiving 2 circuit intermediate frequency output end 314, a receiving 2 circuit radio frequency input end 315, a receiving 3 circuit intermediate frequency output end 316 and a receiving 3 circuit radio frequency input end 317, and the functions of the radar transceiver circuit are completed by adopting a monolithic printed circuit board assembly;
The low-frequency connector 102 is a J30J-51ZKW-J low-frequency connector, the core number of the connector is 51, and the single-core working current is not lower than 1A.
The bottom plate 103 is made of an aluminum alloy 6061 material through integral milling, the surface is subjected to natural-color conductive oxidation treatment, the total thickness of the bottom plate 103 is 10.5 mm, and the length and the width are 139.5 mm; the number of flanges of the base plate 103 was 8, and the diameter of the flange unthreaded hole was 3.5 mm.
The bottom plate 103 is provided with 12 mounting holes matched with the radio frequency connector 106, the bottom plate 103 is reserved with a plurality of threaded holes for mounting the printed circuit board assembly 101, the cover plate A104 and the cover plate B105, grooves with different depths are formed in the bottom plate 103 so as to mount the printed circuit board assembly 101, and the groove depth is 8.5 mm to 9.5 mm; the inside is provided with a plurality of grooves with different depths, and the grooves are matched with the printed circuit board assembly to realize the functions of fixing, radiating, shielding and the like of the circuit;
The cover plate A104 is made of an aluminum alloy 6061 material through integral milling, the surface is subjected to natural-color conductive oxidation treatment, the total thickness of the cover plate A104 is 2 mm, the length and the width are 42.5 mm and 35 mm respectively, and counter bores reserved on the cover plate A104 are used for being installed on the bottom plate 103.
The cover plate B105 is made of an aluminum alloy 6061 material through integral milling, the surface is subjected to natural-color conductive oxidation treatment, the total thickness of the cover plate B105 is 1mm, the length and the width of the cover plate B105 are 137.5 mm, and a counter bore is reserved in the cover plate B105 for being arranged on the bottom plate 103 and used for protecting a printed circuit board assembly, and an external radiating surface is provided for realizing the functions of protecting, radiating, shielding and the like of a circuit by matching with the bottom plate and the printed circuit board assembly;
the RF connector 106 employs the SSMA-KFD series and operates at a frequency not less than 18GHz.
When assembled, the low frequency connector 102 and electronic components are soldered to the multilayer printed circuit board 201 according to fig. 3 to form the printed circuit board assembly 101; mounting the printed circuit board assembly 101 in the bottom plate 103, and fastening the printed circuit board assembly 101 and the bottom plate 103 by using screws; the radio frequency connector 106 is installed again, and the inner conductor of the radio frequency connector is welded with the printed circuit board assembly 101; then, the cover plate B105 is mounted and fastened with screws, and the cover plate a104 is mounted and fastened with screws. The assembly of the miniaturized radar transceiver is completed.
The assembly of this example was completed to a volume of about 262 cc and weighed 396 grams, which was more than 50% optimized over conventional radar transceivers. Compared with the traditional radar transceiver design method, the design period and the production cost are obviously optimized.
When the mounting device is used, one side of a base plate of the miniaturized radar transceiver is tightly attached to a preset mounting plane, a radar transceiver flange is aligned with a preset mounting screw hole, and the mounting flange is fixed by adopting a screw with a preset size; then, the external matched low-frequency connector is inserted with the radar transceiver low-frequency connector, and a matched locking piece of the external matched low-frequency connector is screwed; and then the external radio frequency connector is matched and interconnected with the radio frequency connector of the radar transceiver, and the external radio frequency connector is fastened by a preset torque wrench. Furthermore, the client system provides power, control signals and radio frequency signals for the radar transceiver through the low-frequency connector and the radio frequency connector, and the radar transceiver can work.
The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (1)
1. A miniaturized radar transceiver comprising a printed circuit board assembly (101), a low frequency connector (102), a backplane (103), a cover B (105) and a radio frequency connector (106), characterized in that: the printed circuit board assembly (101) consists of a plurality of layers of printed circuit boards (201), low-frequency connectors (102) and electronic components, wherein the top and the bottom of the printed circuit board assembly (101) are respectively provided with a cover plate B (105), one corner of each cover plate B (105) is provided with a cover plate A (104), the cover plates B (105) at the top and the bottom form a box body for installing the printed circuit board assembly (101) through a bottom plate (103), and one side of the radar transceiver is provided with a plurality of radio frequency connectors (106);
the multilayer printed circuit board (201) is made of FR-4 material, the number of layers is 8, the thickness is 1mm, and the length and width are 13 cm;
The top layer of the multilayer printed circuit board (201) is an electronic component distribution main layer, the bottom layer is a small amount of radio frequency signal wiring layers, and the middle 6 layers are a stratum, a power supply layer, a bottom layer, a signal layer A, a signal layer B and a stratum respectively;
the electronic components comprise two local oscillator generating circuits (301), a power supply circuit (302), a work indicator circuit (303), a local oscillator generating circuit (304), a control circuit (305), a reference clock generating circuit (306), an external clock generating circuit (307), an external clock output end (308), a transmitting circuit intermediate frequency side (309), a transmitting circuit power output end (310), a transmitting circuit calibration output end (311), a receiving 1 circuit intermediate frequency output end (312), a receiving 1 circuit radio frequency input end (313), a receiving 2 circuit intermediate frequency output end (314), a receiving 2 circuit radio frequency input end (315), a receiving 3 circuit intermediate frequency output end (316) and a receiving 3 circuit radio frequency input end (317);
The low-frequency connector (102) is a J30J-51ZKW-J low-frequency connector, the core number of the connector is 51, and the single-core working current is not lower than 1A;
The base plate (103) is made of an aluminum alloy 6061 material through integral milling, the surface is subjected to natural-color conductive oxidation treatment, the total thickness of the base plate (103) is 10.5 mm, and the length and the width are 139.5 mm; the number of the flanges of the bottom plate (103) is 8, and the diameter of the flange unthreaded hole is 3.5 mm;
12 mounting holes matched with the radio frequency connector (106) are formed in the bottom plate (103), a plurality of threaded holes are reserved in the bottom plate (103) and used for mounting the printed circuit board assembly (101), the cover plate A (104) and the cover plate B (105), grooves with different depths are formed in the bottom plate (103) so as to mount the printed circuit board assembly (101), and the groove depth is 8.5-9.5 mm;
the cover plate A (104) is made of an aluminum alloy 6061 material through integral milling, the surface is subjected to natural-color conductive oxidation treatment, the total thickness of the cover plate A (104) is 2 mm, the length and the width are 42.5 mm and 35 mm respectively, and counter bores reserved on the cover plate A (104) are used for being installed on the bottom plate (103);
The cover plate B (105) is made of an aluminum alloy 6061 material through integral milling, the surface is subjected to natural-color conductive oxidation treatment, the total thickness of the cover plate B (105) is 1 mm, the length and the width of the cover plate B are 137.5 mm, and a counter bore is reserved in the cover plate B (105) and is used for being installed on the bottom plate (103);
The low frequency connector (102) and electronic components are soldered to a multilayer printed circuit board (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410956393.7A CN118501819B (en) | 2024-07-17 | Miniaturized device Radar transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410956393.7A CN118501819B (en) | 2024-07-17 | Miniaturized device Radar transceiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118501819A CN118501819A (en) | 2024-08-16 |
| CN118501819B true CN118501819B (en) | 2024-11-15 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558016A (en) * | 2020-12-10 | 2021-03-26 | 中国电子科技集团公司第三十八研究所 | Radar receiving and transmitting system adopting multilayer microstrip connection |
| CN114256575A (en) * | 2021-12-10 | 2022-03-29 | 中国电子科技集团公司第二十九研究所 | Multi-channel miniaturized microwave assembly and metal-based composite substrate structure thereof |
| CN116068496A (en) * | 2023-04-06 | 2023-05-05 | 上海安其威微电子科技有限公司 | Phased array radar circuit board and array |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558016A (en) * | 2020-12-10 | 2021-03-26 | 中国电子科技集团公司第三十八研究所 | Radar receiving and transmitting system adopting multilayer microstrip connection |
| CN114256575A (en) * | 2021-12-10 | 2022-03-29 | 中国电子科技集团公司第二十九研究所 | Multi-channel miniaturized microwave assembly and metal-based composite substrate structure thereof |
| CN116068496A (en) * | 2023-04-06 | 2023-05-05 | 上海安其威微电子科技有限公司 | Phased array radar circuit board and array |
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