CN211786076U - Radar antenna, radar, unmanned aerial vehicle and equipment - Google Patents
Radar antenna, radar, unmanned aerial vehicle and equipment Download PDFInfo
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- CN211786076U CN211786076U CN201921778026.3U CN201921778026U CN211786076U CN 211786076 U CN211786076 U CN 211786076U CN 201921778026 U CN201921778026 U CN 201921778026U CN 211786076 U CN211786076 U CN 211786076U
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Abstract
The embodiment of the utility model discloses radar antenna, radar, unmanned aerial vehicle and equipment, this radar antenna includes first receiving antenna array and the first transmitting antenna array of being connected with main radar chip to and with the second receiving antenna array and the second transmitting antenna array of being connected from radar chip, main radar chip and from radar chip connection, in first direction, a plurality of first receiving antenna intervals in the first receiving antenna array set up, a plurality of first transmitting antenna intervals set up, and a plurality of first receiving antenna and a plurality of first transmitting antenna are on same straight line; in a second direction, the plurality of second receiving antennas in the second receiving antenna array are arranged at intervals, the plurality of second transmitting antennas are arranged at intervals, and the plurality of second receiving antennas and the plurality of second transmitting antennas are on the same straight line. The embodiment of the utility model provides a can detect the object in first direction and second direction, realize the three-dimensional face of object and detect, simple structure and with low costs.
Description
Technical Field
The utility model relates to a radar technical field especially relates to a radar, radar antenna, unmanned aerial vehicle and equipment.
Background
Along with the development of unmanned aerial vehicle technique, unmanned aerial vehicle wide application is in works such as plant protection, aerial photography, and at its worker work in-process, unmanned aerial vehicle passes through radar range finding and keeps away the barrier to realize unmanned aerial vehicle's autonomic flight.
At present, millimeter wave radar can only perceive plane formula's barrier, for example when unmanned aerial vehicle the place ahead has the hillock of certain slope, can only detect horizontal direction the place ahead and have the barrier, and can't detect the information of barrier on the vertical direction, and unmanned aerial vehicle can only stop the flight or by-pass around the barrier in the horizontal direction.
In order to detect information of obstacles in the horizontal direction and the vertical direction, the millimeter wave radar mainly adopts an antenna phased array technology or a mechanical rotation mode to drive an antenna to rotate. The antenna phased array technique needs to set up more antenna element group array on the PCB board, leads to the PCB board size great to the panel of millimeter wave frequency channel is with high costs, and adopts the antenna of mechanical rotation mode drive, needs to increase mechanical pivoted control part, and has increased unmanned aerial vehicle's heavy burden.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a radar antenna, radar, unmanned aerial vehicle and equipment, this radar has realized the three-dimensional face of object and has detected to it is with low costs.
In a first aspect, an embodiment of the present invention provides a radar antenna, including a first receiving antenna array and a first transmitting antenna array connected to a master radar chip, and a second receiving antenna array and a second transmitting antenna array connected to a slave radar chip, where the master radar chip is connected to the slave radar chip;
in a first direction, a plurality of first receiving antennas in the first receiving antenna array are arranged at intervals, a plurality of first transmitting antennas are arranged at intervals, and the plurality of first receiving antennas and the plurality of first transmitting antennas are on the same straight line;
in a second direction, the plurality of second receiving antennas in the second receiving antenna array are arranged at intervals, the plurality of second transmitting antennas are arranged at intervals, and the plurality of second receiving antennas and the plurality of second transmitting antennas are on the same straight line.
Optionally, the first receiving antennas are disposed at equal intervals or unequal intervals in the first direction, and the second receiving antennas are disposed at equal intervals or unequal intervals in the second direction.
Optionally, the distance between any two adjacent first receiving antennas in the first direction is an integral multiple of a half wavelength of the radar signal, and the distance between any two adjacent second receiving antennas in the second direction is an integral multiple of a half wavelength of the radar signal.
Optionally, the distance between any two adjacent first transmitting antennas in the first direction is an integral multiple of a half wavelength of the radar signal, and the distance between any two adjacent second transmitting antennas in the second direction is an integral multiple of a half wavelength of the radar signal.
Optionally, the first transmitting antennas are disposed at equal intervals or unequal intervals in the first direction, and the second transmitting antennas are disposed at equal intervals or unequal intervals in the second direction.
Optionally, the master radar chip and the slave radar chip each include a radio frequency module and a data processing module, so that the master radar chip and the slave radar chip operate asynchronously.
Optionally, the radar chip further comprises a processor, the master radar chip and the slave radar chip are respectively connected with the processor, the master radar chip and the slave radar chip are respectively provided with a signal synchronization pin, and the master radar chip and the slave radar chip are connected through the signal synchronization pin, so that the master radar chip and the slave radar chip can work synchronously.
Optionally, the signal synchronization pin includes a local oscillator signal synchronization pin and a radio frequency cascade signal output end, which are disposed on the main radar chip, and the radar antenna further includes a power divider;
the main radar chip is connected with the slave radar chip through the local oscillation signal synchronization pin so as to realize local oscillation signal synchronization;
the input end of the power divider is connected with the radio frequency cascaded signal output end of the main radar chip, and the output end of the power divider is respectively connected with the radio frequency cascaded input end of the main radar chip and the radio frequency cascaded input end of the slave radar chip, so that radio frequency signal synchronization is realized.
Optionally, the first direction is perpendicular to the second direction.
Optionally, the number of the first receiving antennas is equal to or different from the number of the second receiving antennas, and the number of the first transmitting antennas is equal to or different from the number of the second transmitting antennas.
In a second aspect, an embodiment of the present invention provides a radar, which includes the embodiment of the present invention provides an arbitrary embodiment of the radar antenna.
Third aspect, the embodiment of the utility model provides an unmanned aerial vehicle, this unmanned aerial vehicle includes the utility model discloses any embodiment the radar.
In a fourth aspect, an embodiment of the present invention provides an apparatus, which includes a radar according to any one of the embodiments of the present invention.
The radar antenna comprises a first receiving antenna array and a first transmitting antenna array which are connected with a main radar chip, and a second receiving antenna array and a second transmitting antenna array which are connected with a slave radar chip, wherein the main radar chip is connected with the slave radar chip; in the first direction, the plurality of first receiving antennas in the first receiving antenna array are spaced, the plurality of first transmitting antennas are spaced, and the plurality of first receiving antennas and the plurality of first transmitting antennas are on the same straight line; in the second direction, a plurality of second receiving antenna intervals in the second receiving antenna array, a plurality of second transmitting antenna intervals set up, and a plurality of second receiving antenna and a plurality of second transmitting antenna are on same straight line, the radar that contains this radar antenna has realized detecting in the first direction and second direction, has realized the three-dimensional face of object promptly and has detected to need not to increase other mechanical structure and can realize the three-dimensional face of object and detect, moreover, the steam generator is simple in structure, and the cost is saved.
Drawings
Fig. 1 is a schematic diagram of a radar antenna provided by an embodiment of the present invention;
fig. 2 is a schematic diagram of a positional relationship between antennas in an embodiment of the present invention;
fig. 3a is a schematic structural diagram of a single-array sub-antenna according to an embodiment of the present invention;
fig. 3b is a schematic structural diagram of a multi-element antenna formed by connecting 4 elements in series according to an embodiment of the present invention;
fig. 3c is a schematic structural diagram of a multi-array antenna with 4 arrays connected in series and then in parallel by 3 rows according to an embodiment of the present invention;
fig. 4 is a diagram of a detection effect of a radar antenna provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of another radar antenna provided in the embodiments of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to understand better the embodiment of the utility model provides a, at first right the utility model discloses the angular resolution's of the radar that the embodiment relates to notion, the angular resolution of radar is the minimum angle that two objects can be distinguished to the radar, and the smaller the angular resolution of radar, the better the performance of the resolution object of radar. The angular resolution of the radar is calculated by
Where N is the product of the number of transmitting antennas and the number of receiving antennas of the radar chip in the same direction.
Fig. 1 is a schematic diagram of a radar antenna according to an embodiment of the present invention, as shown in fig. 1, the radar antenna may include a first receiving antenna array 110 and a first transmitting antenna array 120 connected to a master radar chip 150, and a second receiving antenna array 130 and a second transmitting antenna array 140 connected to a slave radar chip 160, wherein the master radar chip 150 and the slave radar chip 160 are connected.
The master radar chip 150 and the slave radar chip 160 may be connected through an SPI, a serial port, and/or an I2C interface, so as to implement communication and data transmission between the master radar chip 150 and the slave radar chip 160.
The utility model discloses an in an embodiment, main radar chip 150 and from radar chip 160 all include radio frequency module and data processing module, and main radar chip 150 and from radar chip 160 can launch alone and receive radar signal promptly to can handle received radar signal alone in order to obtain the detected data, main radar chip 150 promptly and from radar chip 160 can asynchronous work, the utility model discloses the asynchronous work that the embodiment pointed out can mean that examine time measuring to an object, and main radar chip 150 and from radar chip 160 work separately in the same time in order to obtain the ascending detected data of two dimensions respectively.
As shown in fig. 1, the main radar chip 150 is electrically connected to the first receiving antenna array 110 and the first transmitting antenna array 120, and in the first direction a, the plurality of first receiving antennas in the first receiving antenna array 110 and the plurality of first transmitting antennas in the first transmitting antenna array 120 are on the same straight line, and the plurality of first receiving antennas are arranged at intervals, and the plurality of first transmitting antennas are also arranged at intervals, so that the main radar chip 150 can detect information of an object in the first direction a through the first receiving antenna array 110 and the first transmitting antenna array 120, for example, in a distance from a measured object to an unmanned aerial vehicle in the first direction a.
The slave radar chip 160 is electrically connected to the second receiving antenna array 130 and the second transmitting antenna array 140, in the second direction B, the plurality of second receiving antennas in the second receiving antenna array 130 and the plurality of second transmitting antennas in the second transmitting antenna array 140 are on the same straight line, and the plurality of second receiving antennas are arranged at intervals, and the plurality of second transmitting antennas are arranged at intervals, so that the slave radar chip 160 can detect information of an object in the second direction B through the second receiving antenna array and the second transmitting antenna array, for example, the distance from the measured object to the unmanned aerial vehicle in the second direction. The radar can perform three-dimensional detection on the object through the distance between the first direction and the second direction of the object.
It should be noted that, the first direction a related to the embodiment of the present invention may be a horizontal direction or a vertical direction, and when the first direction a is the horizontal direction, the second direction B is the vertical direction; when the first direction a is a vertical direction, the second direction B is a horizontal direction. The embodiment of the present invention relates to the first direction as the direction a in fig. 1, and the second direction as the direction B. Of course, the first direction a and the second direction B may also be any other two intersecting directions.
In addition, as shown in fig. 2 and fig. 3a-3c, as shown in fig. 2, the radar antenna according to the embodiment of the present invention may be fixed on a medium, for example, on the surface of a PCB, wherein the transmitting antenna and the receiving antenna may be microstrip antennas or horn antennas. Optionally, the receiving antenna and the transmitting antenna may be a single-element antenna, a multi-element antenna formed by connecting multiple elements in series, or an antenna formed by connecting multiple multi-element antennas in parallel, for example, fig. 3a is a schematic structural diagram of a single-element antenna, fig. 3b is a schematic structural diagram of a multi-element antenna formed by connecting 4 elements in series, fig. 3c is a schematic structural diagram of a multi-element antenna formed by connecting 4 elements in series and then in parallel with 3 columns, and small boxes in fig. 3a, fig. 3b, and fig. 3c represent elements.
The utility model discloses the example uses microstrip antenna as the example, and this microstrip antenna can be single element antenna or multi-array antenna to the antenna that the antenna is the multi-array to constitute is the example, then the embodiment of the utility model provides an in the embodiment the antenna mean on same straight line that the node P that antenna and feeder formed is on same straight line in certain direction, wherein, the feeder can be the connecting wire that antenna and main radar chip 150 are connected. As in fig. 2, the nodes P of the 3 receiving antennas (RX1, RX2, RX3) are on the same straight line L in the first direction a, and the spaced arrangement means that the antennas have a certain distance from the node P formed by the feeder in a certain direction, as in fig. 2, the node P of two transmitting antennas (TX1 and TX2) has a distance d in the first direction a, or the node P of two transmitting antennas (TX1 and TX2) has a distance d in the second direction B, or the node P of the transmitting antenna TX1 has a distance d in the second direction B from the node P of three receiving antennas (RX1, RX2, RX 3).
In particular, in the embodiment of the present invention, as shown in fig. 1, the distance between the first receiving antennas in the first direction a may be equal or unequal, that is, the first receiving antennas are disposed at equal or unequal intervals in the first direction a, and the distance between the second receiving antennas in the second direction B is equal or unequal, that is, the second receiving antennas are disposed at equal or unequal intervals in the second direction B. Specifically, the distance between two adjacent first receiving antennas in the first direction a may be an integer multiple of a half wavelength of the radar signal, and the distance between two adjacent second receiving antennas in the second direction B may be an integer multiple of a half wavelength of the radar signal.
Similarly, the first transmitting antennas can be arranged at equal intervals or unequal intervals in the first direction A, the second transmitting antennas can be arranged at equal intervals or unequal intervals in the second direction B, the distance between two adjacent first transmitting antennas in the first direction A is the integral multiple of the half-wavelength of the radar signal, and the distance between two adjacent second transmitting antennas in the second direction B is the integral multiple of the half-wavelength of the radar signal.
Taking fig. 1 as an example, in 4 first receiving antennas connected to the main radar chip 150, along the first direction a, the distance between the first receiving antenna and the second first receiving antenna is preferably 1 half wavelength of the radar signal, which is denoted as d, and the distance between the second first receiving antenna and the third first receiving antenna may be d or may be an integral multiple of d, that is, the distances between the receiving antennas may be equal or unequal, and similarly, the distances between the transmitting antennas may be equal or unequal.
As shown in fig. 1, the master radar chip 150 and the slave radar chip 160 are provided with 2 transmitting pins and 4 receiving pins as an example, that is, the master radar chip 150 and the slave radar chip 160 can both connect 4 receiving antennas and 2 transmitting antennas, and of course, the master radar chip 150 and the slave radar chip 160 can also be provided with other numbers of transmitting pins and receiving pins, which is not limited in this embodiment of the present invention. For example, as shown in fig. 1, when the master radar chip 150 and the slave radar chip 160 may each be provided with 2 transmitting pins and 4 receiving pins, a distance between two adjacent first receiving antennas is as follows in the first direction a
The distance between two adjacent first transmitting antennas is
In the second direction B, the distance between two adjacent second receiving antennas is
The distance between two adjacent second transmitting antennas is also
Where λ is the wavelength of the radar signal, preferably k is 8.
Exemplarily, when the radar is configured as shown in fig. 1, the detection effect of the radar is shown in fig. 4, wherein the circles represent the antennas, and the distance between two adjacent antennas in the same direction is
The distance between the two rows of antennas is also
It can be seen from fig. 4 that N is 8 in the first direction a and 8 in the second direction B, when the angular resolution of the radar is in the first direction a
The angular resolution of the radar in the second direction B is
It can be seen that the radar arranged as in fig. 1 can realize the detection of the solid plane of the object, and the detection precision of the first direction a is equal to that of the second direction B.
The embodiment of the utility model provides an in another optional implementation, main radar chip 150 and from radar chip 160 can all be provided with 3 transmission pins and 4 receiving pins, and N is 12 in each direction this moment, can see from this that if main radar chip 150 and from radar chip 160 all are provided with 3 transmission pins and 4 receiving pins, can further improve the angular resolution of radar.
Of course, the transmitting pin and the receiving pin of the radar chip may also be other values, so that the number of the receiving antennas connected to the main radar chip 150 and the slave radar chip 160 is equal or unequal, and the number of the connected transmitting antennas is equal or unequal, which is not limited by the embodiment of the present invention.
As shown in fig. 5, in the embodiment of the present invention, the master radar chip 150 and the slave radar chip 160 can also work synchronously, specifically, the radar antenna further includes a processor 170, the master radar chip 150 and the slave radar chip 160 are respectively connected to the processor 170, the master radar chip 150 and the slave radar chip 160 are both provided with signal synchronization pins, and the master radar chip 150 and the slave radar chip 160 are connected through the signal synchronization pins to realize the synchronous work of the master radar chip 150 and the slave radar chip 160.
Specifically, in the embodiment of the utility model provides an in the optional embodiment, signal synchronization pin is including setting up local oscillator signal synchronization pin CLK and the radio frequency cascade signal output part on main radar chip 150, radar antenna still includes merit and divides ware 180, main radar chip 150 passes through local oscillator signal synchronization pin and is connected from radar chip 160, in order to realize local oscillator signal synchronization, the input that ware 180 was divided to the merit is connected with main radar chip 150's radio frequency cascade signal output part, the output that ware 180 was divided to the merit is connected with main radar chip 150's radio frequency signal cascade input part and from radar chip 160's radio frequency signal cascade input part respectively, in order to realize radio frequency signal synchronization.
The embodiment of the utility model provides an in, main radar chip 150 and from radar chip 160 can only include radio frequency module, be used for launching radar signal and receiving radar signal, main radar chip 150's radio frequency module passes through behind synchronous signal synchronous follow radar chip 160, the radio frequency signal of main radar chip 150's radio frequency module modulation is exported main radar chip 150 and is realized that radio frequency signal is synchronous from radar chip 160 through merit divider 180, make main radar chip 150 and the antenna of being connected from radar chip 160 can share, main radar chip 150 except can receiving the echo signal after the transmission of first transmitting antenna, can also receive the echo signal after the transmission of second transmitting antenna, thereby can improve the detection precision.
The embodiment of the utility model provides a still provide a radar, this radar includes the utility model discloses a radar antenna.
The embodiment of the utility model provides an unmanned aerial vehicle is still provided, this unmanned aerial vehicle includes the utility model provides an arbitrary radar.
The embodiment of the utility model provides an equipment is still provided, and this equipment includes the utility model provides an arbitrary radar. Optionally, this equipment can be for someone driving the car, someone driving the steamer, unmanned car, unmanned steamer etc. promptly the utility model discloses equipment can be mobile platform or fixed platform, can also be someone driving or unmanned platform, the embodiment of the utility model provides a not restriction to this.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that may be understood by those skilled in the art.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (13)
1. A radar antenna is characterized by comprising a first receiving antenna array and a first transmitting antenna array which are connected with a main radar chip, and a second receiving antenna array and a second transmitting antenna array which are connected with a slave radar chip, wherein the main radar chip is connected with the slave radar chip;
in a first direction, a plurality of first receiving antennas in the first receiving antenna array are arranged at intervals, a plurality of first transmitting antennas are arranged at intervals, and the plurality of first receiving antennas and the plurality of first transmitting antennas are on the same straight line;
in a second direction, the plurality of second receiving antennas in the second receiving antenna array are arranged at intervals, the plurality of second transmitting antennas are arranged at intervals, and the plurality of second receiving antennas and the plurality of second transmitting antennas are on the same straight line.
2. The radar antenna of claim 1, wherein the first receiving antennas are disposed at equal or unequal intervals in a first direction, and the second receiving antennas are disposed at equal or unequal intervals in a second direction.
3. The radar antenna according to claim 1 or 2, wherein a distance between any adjacent two of the first receiving antennas in the first direction is an integer multiple of a half wavelength of the radar signal, and a distance between any adjacent two of the second receiving antennas in the second direction is an integer multiple of a half wavelength of the radar signal.
4. The radar antenna according to claim 1 or 2, wherein a distance between any adjacent two of the first transmission antennas in the first direction is an integer multiple of a half wavelength of the radar signal, and a distance between any adjacent two of the second transmission antennas in the second direction is an integer multiple of a half wavelength of the radar signal.
5. Radar antenna according to claim 4, characterised in that the first transmitting antennas are arranged at equal or unequal intervals in a first direction and the second transmitting antennas are arranged at equal or unequal intervals in a second direction.
6. The radar antenna of claim 1, wherein the master radar chip and the slave radar chip each include a radio frequency module and a data processing module such that the master radar chip and the slave radar chip operate asynchronously.
7. The radar antenna as recited in claim 1, further comprising a processor, wherein the master radar chip and the slave radar chip are respectively connected to the processor, each of the master radar chip and the slave radar chip is provided with a signal synchronization pin, and the master radar chip and the slave radar chip are connected through the signal synchronization pin, so as to implement synchronous operation of the master radar chip and the slave radar chip.
8. The radar antenna of claim 7, wherein the signal synchronization pin comprises a local oscillator signal synchronization pin and a radio frequency cascade signal output terminal disposed on the main radar chip, and the radar antenna further comprises a power divider;
the main radar chip is connected with the slave radar chip through the local oscillation signal synchronization pin so as to realize local oscillation signal synchronization;
the input end of the power divider is connected with the radio frequency cascaded signal output end of the main radar chip, and the output end of the power divider is respectively connected with the radio frequency cascaded input end of the main radar chip and the radio frequency cascaded input end of the slave radar chip, so that radio frequency signal synchronization is realized.
9. The radar antenna of claim 1, wherein the first direction is perpendicular to the second direction.
10. The radar antenna of claim 1, wherein the first receiving antenna and the second receiving antenna are equal or unequal in number, and wherein the first transmitting antenna and the second transmitting antenna are equal or unequal in number.
11. A radar, characterized in that it comprises a radar antenna according to any one of claims 1-10.
12. A drone, characterized in that it comprises a radar according to claim 11.
13. An apparatus, characterized in that the apparatus comprises a radar according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921778026.3U CN211786076U (en) | 2019-10-22 | 2019-10-22 | Radar antenna, radar, unmanned aerial vehicle and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921778026.3U CN211786076U (en) | 2019-10-22 | 2019-10-22 | Radar antenna, radar, unmanned aerial vehicle and equipment |
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| CN211786076U true CN211786076U (en) | 2020-10-27 |
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| CN201921778026.3U Active CN211786076U (en) | 2019-10-22 | 2019-10-22 | Radar antenna, radar, unmanned aerial vehicle and equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112346042A (en) * | 2020-12-10 | 2021-02-09 | 麦堆微电子技术（上海）有限公司 | Ka frequency range millimeter wave radar altimeter |
| CN112666524A (en) * | 2020-12-31 | 2021-04-16 | 广州极飞科技有限公司 | Radar and movable platform |
| CN112698299A (en) * | 2019-10-22 | 2021-04-23 | 广州极飞科技有限公司 | Radar antenna, radar, unmanned aerial vehicle and equipment |
| US20230016890A1 (en) * | 2021-07-09 | 2023-01-19 | Infineon Technologies Ag | Correction of phase deviations in the analog frontend of radar systems |
-
2019
- 2019-10-22 CN CN201921778026.3U patent/CN211786076U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112698299A (en) * | 2019-10-22 | 2021-04-23 | 广州极飞科技有限公司 | Radar antenna, radar, unmanned aerial vehicle and equipment |
| CN112698299B (en) * | 2019-10-22 | 2024-08-30 | 广州极飞科技股份有限公司 | Radar antenna, radar, unmanned aerial vehicle and equipment |
| CN112346042A (en) * | 2020-12-10 | 2021-02-09 | 麦堆微电子技术（上海）有限公司 | Ka frequency range millimeter wave radar altimeter |
| CN112666524A (en) * | 2020-12-31 | 2021-04-16 | 广州极飞科技有限公司 | Radar and movable platform |
| US20230016890A1 (en) * | 2021-07-09 | 2023-01-19 | Infineon Technologies Ag | Correction of phase deviations in the analog frontend of radar systems |
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Address after: 510000 Block C, 115 Gaopu Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: XAG Co., Ltd. Address before: 510000 Block C, 115 Gaopu Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Xaircraft Technology Co.,Ltd. |
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