Radar and movable platform

Abstract

This application provides a radar and a mobile platform, relating to the field of radar technology. The radar comprises a substrate, which includes a central chip placement area and an antenna placement area surrounding the chip placement area. The radar also includes a transceiver chip mounted in the chip placement area and an antenna mounted in the antenna placement area, electrically connected to the transceiver chip. The radar and mobile platform provided by this application have the advantages of higher integration and less wasted circuit board area.

Description

Technical Field

[0001] The present application relates to the field of radar technology, and in particular to a radar and a movable platform. Background Art

[0002] At present, in order to prevent collision accidents during the movement of movable platforms, radars are installed on the movable platforms.

[0003] For radars on mobile platforms, the more antennas they have, the higher their resolution. Therefore, it is necessary to arrange as many antennas as possible on the radar's circuit board.

[0004] However, the current radar circuit board layout generally adopts a method of placing the processing chip on one side of the circuit board and the antenna on the other side of the circuit board. This method results in a large amount of waste of circuit board area and cannot effectively layout more antennas.

[0005] In summary, in the prior art, when antennas are arranged on a radar circuit board, a large amount of circuit board area is wasted. Summary of the Invention

[0006] The purpose of the present application is to provide a radar and a movable platform to at least solve the problem in the prior art that a large amount of circuit board area is wasted when arranging antennas on the circuit board of the radar.

[0007] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0008] On the one hand, an embodiment of the present application provides a radar, comprising: a substrate; the substrate comprising a chip placement area located at a central position and an antenna layout area surrounding the chip placement area; a transceiver chip installed in the chip placement area; an antenna installed in the antenna layout area, and the antenna is electrically connected to the transceiver chip.

[0009] Optionally, the antenna layout area includes a first antenna layout area, a second antenna layout area, a third antenna layout area and a fourth antenna layout area respectively located around the transceiver chip, and the antennas are distributed in the first antenna layout area, the second antenna layout area, the third antenna layout area and the fourth antenna layout area.

[0010] Optionally, the first antenna deployment area extends in a horizontal direction; the antenna includes at least two long-range transmitting antennas and multiple long-range receiving antennas, the long-range transmitting antennas and the long-range receiving antennas are arranged in a straight line in the horizontal direction in the first antenna deployment area, and the multiple long-range receiving antennas are located between the long-range transmitting antennas.

[0011] Optionally, the multiple long-distance receiving antennas are arranged at equal intervals, and the interval between every two long-distance receiving antennas is greater than or equal to 0.5λ; wherein λ represents the wavelength of the radar.

[0012] Optionally, the second antenna layout area extends in the horizontal direction, and the third antenna layout area and the fourth antenna layout area extend in the vertical direction; the antenna includes multiple short-range transmitting antennas and short-range receiving antennas, the short-range receiving antennas are located in the second antenna layout area, and the short-range transmitting antennas are respectively located in the third antenna layout area and the fourth antenna layout area, and the short-range transmitting antennas in the third antenna layout area and the short-range transmitting antennas in the fourth antenna layout area are symmetrically arranged.

[0013] Optionally, the short-range transmitting antennas in the third antenna arrangement area and the short-range transmitting antennas in the fourth antenna arrangement area are arranged in a straight line in the vertical direction.

[0014] Optionally, the short-range receiving antennas are arranged in multiple rows, and the multiple rows of short-range receiving antennas are staggered.

[0015] Optionally, the radar further includes a shielding cover and a connector, the shielding cover covers the transceiver chip, the connector passes through the shielding cover, and the transceiver chip is electrically connected to the antenna through the connector.

[0016] Optionally, the transceiver chip includes multiple signal transceiver chips, an oscillator chip, and a converter, and the multiple signal transceiver chips, the oscillator chip, the converter, and the antenna are cascaded in sequence.

[0017] On the other hand, an embodiment of the present application provides a movable platform, which includes the above-mentioned radar.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] The present application provides a radar and a movable platform. The radar includes a substrate having a central chip placement area and an antenna placement area surrounding the chip placement area. The radar also includes a transceiver chip mounted in the chip placement area, and an antenna mounted in the antenna placement area, electrically connected to the transceiver chip. Because the radar provided in the present application utilizes a zoned layout during circuit board layout, with the antenna positioned around the central transceiver chip, the entire circuit board area is fully utilized, eliminating wasted circuit board space and resulting in a higher level of integration.

[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of a radar antenna layout in the prior art.

[0023] Figure 2 A schematic diagram of the radar antenna layout provided in an embodiment of the present application.

[0024] Figure 3 Another schematic diagram of a radar antenna layout provided in an embodiment of the present application.

[0025] Figure 4 This is a comparison chart between the MIMO design provided by the prior art and the MIMO design provided by this application.

[0026] Figure 5 This is a virtual layout diagram of all channels of the radar provided in the embodiment of this application.

[0027] Figure 6 A schematic diagram of a module of the transceiver chip provided in an embodiment of the present application.

[0028] In the figure: 100-radar; 110-substrate; 120-transceiver chip; 130-antenna; 111-chip placement area; 112-first antenna layout area; 113-second antenna layout area; 114-third antenna layout area; 115-fourth antenna layout area; 121-signal transceiver chip; 122-oscillator chip; 123-converter; 131-long-range transmitting antenna; 132-long-range receiving antenna; 133-short-range transmitting antenna; 134-short-range receiving antenna. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0033] In the description of this application, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0036] As described in the background technology, the current radar circuit board layout generally adopts the method of placing the processing chip on one side of the circuit board and the antenna on the other side of the circuit board. This method causes a large amount of circuit board area to be wasted and cannot effectively layout more antennas.

[0037] For example, see Figure 1 , Figure 1 The figure shows an antenna layout for a radar circuit board in the prior art, where TX represents the transmitting antenna and RX represents the receiving antenna. As can be seen from the figure, this layout places the processing chip on one side of the circuit board and the antenna on the other side (in the example, antennas are placed to the left and above the processing chip). This makes it impossible to place antennas in other areas of the circuit board. For example, the shaded area in the figure is where no antennas are placed, resulting in a large amount of wasted space on the circuit board and making it difficult to achieve miniaturization. Reasons for not being able to place antennas in the shaded area include the area being too small or the tendency to cause phase confusion.

[0038] In view of this, the present application provides a radar that fully utilizes the circuit board area by setting the antenna to surround the area where the middle chip is located, without wasting the area on the circuit board.

[0039] The following is an exemplary description of the radar provided in this application:

[0040] As an optional implementation, see Figure 2 The radar 100 includes a substrate 110, a transceiver chip 120, and an antenna 130. The antenna 130 is electrically connected to the transceiver chip 120. The transceiver chip 120 includes, but is not limited to, components such as a signal receiving chip and a signal transmitting chip. The transceiver chip 120 can transmit and receive radio frequency signals, for example, transmitting radio frequency signals through the antenna 130 or receiving radio frequency signals through the antenna 130. It should be noted that the signal receiving chip and the signal transmitting chip can be integrated or provided separately, and this embodiment does not impose any restrictions on this.

[0041] Furthermore, the substrate 110 described in this embodiment may be a circuit board. To fully utilize the area of substrate 110, this embodiment partitions substrate 110 into a chip placement area 111 located at the center of substrate 110, with the remainder of substrate 110 being designated as an antenna placement area. The transceiver chip 120 is mounted in chip placement area 111, and the antenna 130 is mounted in the antenna placement area. This allows the antenna 130 to be positioned around the transceiver chip 120, fully utilizing the entire area of substrate 110 and achieving a higher level of integration.

[0042] As an optional implementation, please continue to refer to Figure 2 The antenna arrangement area includes a first antenna arrangement area 112, a second antenna arrangement area 113, a third antenna arrangement area 114 and a fourth antenna arrangement area 115, which are respectively located around the transceiver chip 120, and the antenna 130 is distributed in the first antenna arrangement area 112, the second antenna arrangement area 113, the third antenna arrangement area 114 and the fourth antenna arrangement area 115.

[0043] By dividing the chip placement area 111 into four antenna placement areas, it is possible to more conveniently arrange the antenna 130. It should be noted that, generally, the shape of a circuit board can be rectangular or square, but is not limited thereto. Therefore, by dividing the circuit board into four antenna placement areas, the four antenna placement areas can occupy the four edges of the circuit board, making better use of the circuit board area for antenna 130 layout. Furthermore, this embodiment does not limit the shape of the chip placement area 111; for example, the chip placement area 111 can be rectangular, square, or circular.

[0044] Among them, see Figure 3 The antenna 130 includes four types: a long-range transmitting antenna 131, a long-range receiving antenna 132, a short-range transmitting antenna 133, and a short-range receiving antenna 134. As an implementation method, a range less than 20m can be defined as a short range, and a range greater than 50m can be defined as a long range. All antennas 130 can be based on comb antennas. The following is an exemplary description of the layout of the antenna 130:

[0045] The long-distance transmitting antenna 131 and the long-distance receiving antenna 132 are both high-gain antennas. The number of the long-distance transmitting antennas 131 is at least two, and the number of the long-distance receiving antennas 132 can be multiple.

[0046] For the transmission and reception of long-distance signals, the horizontal resolution needs to be high enough to distinguish adjacent objects on the left and right. Therefore, as an implementation method, the first antenna deployment area 112 extends in the horizontal direction, and the long-distance transmitting antenna 131 and the long-distance receiving antenna 132 are arranged in a straight line in the horizontal direction in the first antenna deployment area 112, and multiple long-distance receiving antennas 132 are located between the long-distance transmitting antenna 131.

[0047] Optionally, the multiple long-range receiving antennas 132 are identical, i.e., they are of the same model. The multiple long-range receiving antennas 132 are evenly spaced. To prevent confusion between the channels generated by the long-range transmitting antenna 131 and the long-range receiving antenna 132, the spacing between each pair of long-range receiving antennas 132 is greater than or equal to 0.5λ, where λ represents the wavelength of the radar 100. Optionally, to maximize utilization of the first antenna deployment area 112 for placement of more long-range receiving antennas 132, the spacing between each pair of long-range receiving antennas 132 may be preferably 0.5λ.

[0048] For example, Figure 3 As shown, the antenna 130 of the radar 100 includes two long-range transmitting antennas 131 and eight long-range receiving antennas 132. The eight long-range receiving antennas 132 are located between the two long-range transmitting antennas 131, thereby forming a 2*8 MIMO (multiple-in multiple-out) in the horizontal direction, thereby obtaining 16 real antenna channels (not algorithmic interpolation). Therefore, when performing long-range detection through the radar 100, a higher resolution is achieved in the horizontal direction.

[0049] It should be noted that the above method is merely an example. In actual applications, the number of long-range transmitting antennas 131 and long-range receiving antennas 132 actually used can be determined based on the area of the first antenna arrangement area 112. This embodiment does not impose any restrictions on this. For example, when the circuit board area is small, the number of long-range receiving antennas 132 can be reduced. For example, 8 long-range receiving antennas 132 can be reduced to 6 long-range receiving antennas 132. In this case, they form a 2*6 MIMO system, obtaining 12 actual antenna channels. Of course, the horizontal resolution is relatively reduced. When the circuit board area itself is large, the number of long-range receiving antennas 132 or long-range transmitting antennas 131 can be increased. For example, 8 long-range receiving antennas 132 can be increased to 10 long-range receiving antennas 132. In this case, they form a 2*10 MIMO system, obtaining 20 actual antenna 130 channels, and the horizontal resolution is relatively improved. Alternatively, the number of long-distance transmitting antennas is increased to 3, wherein 4 long-distance receiving antennas 132 are set between every two long-distance transmitting antennas, which form a 3*8 MIMO, and obtain 24 real antenna 130 channels with higher resolution.

[0050] Furthermore, in the prior art, the long-distance transmitting antenna is usually placed on one side and the long-distance receiving antenna is placed on the other side. Figure 4 , Figure 4 The figure shows a comparison between the MIMO design in the prior art and the MIMO design provided in this application, taking two long-distance transmitting antennas and four long-distance receiving antennas as an example.

[0051] Figure 4 In the figure, A represents the MIMO design provided by this application. The black lines represent the long-range transmitting antennas, the white lines represent the long-range receiving antennas, and the dashed lines represent the real antennas created by the MIMO. Since the long-range transmitting antennas themselves occupy a single location, the MIMO provided by this embodiment is discontinuous. In contrast, the prior art employs two long-range transmitting antennas on the left and four long-range receiving antennas on the right. Therefore, to prevent phase confusion between the virtualized real antennas, the spacing between the two long-range transmitting antennas is larger in the prior art. For example, the spacing between the two long-range transmitting antennas in the figure is 4λ.

[0052] Therefore, it is understandable that the MIMO design in the prior art wastes the area between the two long-distance transmitting antennas. However, in this embodiment, since multiple long-distance receiving antennas 132 are set between the two long-distance transmitting antennas 131, the long-distance transmitting antennas 131 and the long-distance receiving antennas 132 can be set at equal intervals, with higher integration, and more antennas can be accommodated in the same area, thereby significantly improving its horizontal resolution; or, when the same number of antennas are used, the circuit board of the radar provided in this embodiment can be smaller, thereby achieving miniaturization.

[0053] On the other hand, the short-range transmitting antenna 133 and the short-range receiving antenna 134 are both low-gain antennas 130 , and the number of the short-range transmitting antenna 133 and the number of the short-range receiving antenna 134 can be plural.

[0054] As an implementation, the second antenna arrangement area 113 extends horizontally, the third antenna arrangement area 114 and the fourth antenna arrangement area 115 extend vertically, the short-range receiving antenna 134 is located in the second antenna arrangement area 113, and the short-range transmitting antenna 133 is located in the third antenna arrangement area 114 and the fourth antenna arrangement area 115, respectively. The short-range transmitting antenna 133 in the third antenna arrangement area 114 is symmetrically arranged with the short-range transmitting antenna 133 in the fourth antenna arrangement area 115. This arrangement places the short-range receiving antenna 134 in the second antenna arrangement area 113 between the third antenna arrangement area 114 and the fourth antenna arrangement area 115. Furthermore, because the short-range transmitting antenna 133 in the third antenna arrangement area 114 is symmetrically arranged with the short-range transmitting antenna 133 in the fourth antenna arrangement area 115, a horizontal MIMO array can be formed, thereby improving horizontal resolution.

[0055] Optionally, in order to simultaneously improve the resolution in the horizontal direction and the resolution in the vertical direction, as an implementation method, the short-range transmitting antenna 133 in the third antenna arrangement area 114 and the short-range transmitting antenna 133 in the fourth antenna arrangement area 115 are arranged in a straight line in the vertical direction.

[0056] Since the short-range transmitting antennas 133 are arranged in a straight line in the vertical direction and the short-range transmitting antennas 133 in the third antenna arrangement area 114 and the fourth antenna arrangement area 115 are symmetrically arranged, they can be combined into multiple MIMO arrays to improve the resolution in the vertical direction.

[0057] For example, Figure 3For example, when four short-range transmitting antennas 133 are respectively arranged in the third antenna arrangement area 114 and the fourth antenna arrangement area 115, since the four short-range transmitting antennas 133 are arranged in a straight line in the vertical direction, they can form four groups of MIMO arrays. That is, if the four short-range transmitting antennas in the third antenna arrangement area 114 are named a1, a2, a3 and a4 respectively, and the four short-range transmitting antennas in the fourth antenna arrangement area 115 are named b1, b2, b3 and b4 respectively, then the short-range transmitting antenna a1 located in the third antenna arrangement area 114, the short-range transmitting antenna b1 located in the fourth antenna arrangement area 115 and the short-range receiving antenna 134 located in the second antenna arrangement area 113 form a 2*N MIMO, where N is the number of short-range receiving antennas 134. Similarly, the short-range transmitting antenna a2 located in the third antenna arrangement area 114, the short-range transmitting antenna b2 located in the fourth antenna arrangement area 115, and the short-range receiving antenna 134 located in the second antenna arrangement area 113 form a 2*N MIMO, and so on, a total of 4 MIMO arrays can be formed.

[0058] In other words, through this setting method, for short-range radar detection, the horizontal resolution is higher because it forms 2*N MIMO in the horizontal direction. At the same time, in the vertical direction, since it forms 4 groups of MIMO, the short-range transmitting antenna 133 is arranged in a straight line in the vertical direction, so multiple groups of MIMO are also arranged in a straight line in the vertical direction, thereby greatly improving the vertical resolution.

[0059] At the same time, in order to further improve the horizontal and vertical resolutions, the short-range receiving antennas 134 are arranged in multiple rows, and the multiple rows of short-range receiving antennas 134 are staggered.

[0060] For example, see Figure 3The short-range receiving antennas 134 include 12 antennas 134 arranged in two rows, each row including 6 short-range receiving antennas 134, and the two rows of short-range receiving antennas 134 are staggered. It should be noted that the staggered arrangement described in this application means that the short-range receiving antennas 134 in the first row are not aligned with the short-range receiving antennas 134 in the second row. For example, the short-range receiving antenna 134 in the second row is aligned with the middle position between the first short-range receiving antenna 134 and the second short-range receiving antenna 134 in the first row. Optionally, in order to accommodate as many short-range receiving antennas 134 as possible within the second antenna arrangement area 113, the short-range receiving antennas 134 in each row are arranged at equal intervals, with the spacing between each two short-range receiving antennas 134 being λ. In any two rows of short-range receiving antennas 134, the horizontal spacing between two short-range receiving antennas 134 at corresponding positions is 0.5λ. For example, as shown in the figure, the horizontal spacing between the first short-range receiving antenna 134 in the first row and the first short-range receiving antenna 134 in the second row is 0.5λ. Similarly, the horizontal spacing between the second short-range receiving antenna 134 in the first row and the second short-range receiving antenna 134 in the second row is also 0.5λ. This arrangement ensures that the MIMO systems are not confused and that, after the area of the second antenna deployment area 113 is determined, as many short-range receiving antennas 134 as possible can be deployed within the limited area.

[0061] Furthermore, when the short-range receiving antennas 134 are arranged in two rows, the short-range transmitting antennas 133 and the two rows of short-range receiving antennas 134 can each form two MIMO arrays. For example, the short-range transmitting antenna a1 in the third antenna arrangement area 114, the short-range transmitting antenna b1 in the fourth antenna arrangement area 115, and the short-range receiving antennas 134 in the first row of the second antenna arrangement area 113 can form a 2x6 MIMO array. Furthermore, the short-range transmitting antenna a1 in the third antenna arrangement area 114, the short-range transmitting antenna b1 in the fourth antenna arrangement area 115, and the short-range receiving antennas 134 in the second row of the second antenna arrangement area 113 can also form a 2x6 MIMO array, thereby improving vertical resolution. Similarly, the remaining three pairs of short-range transmitting antennas 133 and short-range receiving antennas 134 form similar MIMO arrays, significantly improving vertical resolution while also achieving high horizontal resolution for each vertical component.

[0062] It should be noted that, to better utilize the area on the circuit board, in this embodiment, the first antenna arrangement area 112 and the second antenna arrangement area 113 are arranged opposite each other and have approximately the same area. In actual use, a MIMO array of long-range transmitting antennas 131 and short-range receiving antennas 130 will also be formed. To prevent phase confusion in this MIMO array and to arrange as many antennas 130 as possible in the antenna arrangement area, in this embodiment, the first long-range transmitting antenna 131 and the first short-range receiving antenna 134 in the multiple rows of short-range receiving antennas 134 have the same phase, that is, they are in the same vertical direction; the other long-range transmitting antenna 131 and the last short-range receiving antenna 134 in the multiple rows of short-range receiving antennas 134 have the same phase, that is, they are in the same vertical direction.

[0063] Figure 5 The diagram shows all virtual channels of the radar 100 provided by the present application, wherein the solid circles represent the MIMO virtual array of the short-range transmitting antenna 133 and the short-range receiving antenna 134, the black circles represent the MIMO virtual array of the long-range transmitting antenna 131 and the short-range receiving antenna 134, and the dashed circles represent the MIMO virtual array of the long-range transmitting antenna 131 and the long-range receiving antenna 132. It can be seen that because the short-range receiving antennas 134 are arranged in two rows, each MIMO virtual array of the short-range transmitting antenna 133 and the short-range receiving antenna 134 has two rows. Based on the improved vertical resolution, each vertical component has a higher horizontal resolution.

[0064] It can be understood that the above implementation methods are all examples. In actual applications, the number of short-range transmitting antennas 133 and short-range receiving antennas 134 can be set according to the actual area of ​​the substrate 110. For example, when the area of ​​the substrate 110 is small, the short-range receiving antennas 134 in the second antenna arrangement area 113 can be arranged in only one row; when the area of ​​the substrate 110 is large, the short-range receiving antennas 134 in the second antenna arrangement area 113 can be arranged in three rows; or the short-range transmitting antennas 133 in the third antenna arrangement area 114 or the fourth antenna arrangement area 115 can be increased or decreased accordingly, and no limitation is made here.

[0065] In actual applications, when the antenna 130 transmits or receives electromagnetic waves in the corresponding frequency band, the transceiver chip 120 may generate radiation or echo during operation, thereby causing the radar 100 to have relatively large noise.

[0066] In view of this, the radar 100 provided in the present application further includes a shielding cover and a connector. The shielding cover is arranged outside the transceiver chip 120. The connector passes through the shielding cover, and the transceiver chip 120 is electrically connected to the antenna 130 through the connector.

[0067] The shield can be a metal shield, and the connector can be a microstrip line. By providing this shield, the transceiver chip 120 within the shield can only be fed to the transmitting antenna 130 via the connector, thereby enabling the transmitting antenna 130 to radiate electromagnetic waves in the corresponding frequency band. Furthermore, the metal shield can shield both the radiation and the echo generated by the transceiver chip 120 within the shield, thereby reducing the noise coefficient of the radar 100.

[0068] As an implementation method, the present application provides that the transceiver chip 120 can be connected in a cascade manner. Optionally, refer to Figure 6 The transceiver chip 120 includes multiple signal transceiver chips 121, an oscillator chip 122 and a converter 123. The multiple signal transceiver chips 121, the oscillator chip 122, the converter 123 and the antenna 130 are cascaded in sequence.

[0069] The signal transceiver chip 121 refers to a chip provided with a signal sending port and / or a signal receiving port, for example, Figure 3 Taking the radar 100 shown as an example, if a chip with only one signal transmitting port or one signal receiving port is used, the radar 100 is provided with 2 long-range transmitting chips, 8 long-range receiving chips, 8 short-range transmitting chips, and 12 short-range transmitting chips; as another solution, if a chip with more than one signal transmitting port or signal receiving port is used, 2 4-transmitting chips, 1 2-transmitting chip, 5 4-receiving chips, and 1 oscillator chip 122 can be used, or 5 2-transmitting chips, 5 4-receiving chips, and 1 oscillator chip 122 can be used.

[0070] Since the present application adopts a cascade approach, only one oscillator chip 122 is needed to complete the work of the radar 100, which saves costs and reduces the chip size.

[0071] Of course, a transceiver integrated chip can also be used, for example, five two-transmit and four-receive chips (with built-in oscillators). At the same time, one of the chips can be selected as the master chip and the other four chips can be selected as slave chips. The master chip is used to provide the oscillator, and the slave chips share the oscillator signal.

[0072] It should be noted that the aforementioned 4-transmit chip, 4-receive chip, etc. refer to a chip with 4 signal transmission ports, a chip with 4 signal reception ports, and so on. Similarly, the 2-transmit 4-receive chip described in this application refers to a chip with two signal transmission ports and four signal reception ports.

[0073] Based on the above implementation, the present application further provides a mobile platform, which includes the above radar. As an implementation, the mobile platform can be an unmanned device such as a drone, or a human-controlled device, without any limitation.

[0074] In summary, the present application provides a radar and a movable platform. The radar includes a substrate, the substrate including a centrally located chip placement area and an antenna placement area surrounding the chip placement area. The radar also includes a transceiver chip mounted in the chip placement area, and an antenna mounted in the antenna placement area, electrically connected to the transceiver chip. Because the radar provided in the present application utilizes a zoned layout during circuit board layout, with the antenna positioned around the central transceiver chip, the entire circuit board area is fully utilized, eliminating wasted circuit board space and resulting in a higher level of integration.

[0075] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0076] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A radar, characterized in that: The radar includes: The substrate includes a chip placement area located at a central position and an antenna arrangement area surrounding the chip placement area; a transceiver chip, mounted in the chip placement area; an antenna, mounted in the antenna arrangement area, and electrically connected to the transceiver chip; The antenna arrangement area includes a first antenna arrangement area, a second antenna arrangement area, a third antenna arrangement area, and a fourth antenna arrangement area, which are respectively located around the transceiver chip, and the antennas are distributed in the first antenna arrangement area, the second antenna arrangement area, the third antenna arrangement area, and the fourth antenna arrangement area; The second antenna arrangement area extends horizontally, and the third and fourth antenna arrangement areas extend vertically. The antenna includes multiple short-range transmitting antennas and short-range receiving antennas, the short-range receiving antennas are located in the second antenna arrangement area, and the short-range transmitting antennas are located in the third and fourth antenna arrangement areas, respectively. The short-range transmitting antennas are arranged in a straight line in the vertical direction, and the short-range transmitting antennas in the third antenna arrangement area are symmetrically arranged with the short-range transmitting antennas in the fourth antenna arrangement area, so as to simultaneously improve the resolution in the horizontal and vertical directions. The short-range receiving antennas are arranged in multiple rows, the multiple rows of short-range receiving antennas are staggered, and the number of short-range receiving antennas in each row is the same; The first antenna deployment area extends in a horizontal direction; the antenna includes at least two long-range transmitting antennas and multiple long-range receiving antennas, the long-range transmitting antennas and the long-range receiving antennas are arranged in a straight line in the horizontal direction in the first antenna deployment area, and the multiple long-range receiving antennas are located between the two long-range transmitting antennas.

2. The radar according to claim 1, wherein The multiple long-distance receiving antennas are arranged at equal intervals, and the interval between every two long-distance receiving antennas is greater than or equal to 0.5λ; wherein λ represents the wavelength of the radar.

3. The radar according to claim 1, wherein The radar further includes a shielding cover and a connector. The shielding cover covers the transceiver chip. The connector passes through the shielding cover, and the transceiver chip is electrically connected to the antenna through the connector.

4. The radar according to claim 1, wherein The transceiver chip includes a plurality of signal transceiver chips, an oscillator chip, and a converter. The plurality of signal transceiver chips, the oscillator chip, the converter, and the antenna are cascaded in sequence.

5. A movable platform, characterized in that: The movable platform comprises the radar according to any one of claims 1 to 4.

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