Radar antenna and radar monitoring device for autonomous vehicle
A radar antenna and autonomous driving technology, which is applied to antennas, antennas, slot antennas and other directions suitable for movable objects, can solve the problems of rising product costs, aggravating electromagnetic energy loss, and increasing the size of radio frequency high-frequency boards, etc. The effect of large feeder loss, reduction of electromagnetic energy loss, and reduction of feeder length
Pending Publication Date: 2022-03-25
SHENZHEN ANNGIC TECH CO LTD
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Problems solved by technology
[0005] In the narrow case, if you want to obtain better beam width and azimuth information of the measured target, you will inevitably increase the size of the RF high-frequency board, which will greatly increase the cost of the product; at the same time, it will also increase the loss of electromagnetic energy
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be constru...
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The invention provides a radar antenna and a radar monitoring device for an autonomous vehicle, and the radar antenna comprises an onboard patch antenna, a switching structure, an electromagnetic energy transmission channel, and a waveguide slotted antenna. The onboard patch antennas are compactly distributed around the radio frequency chip according to the design, the feeder length of each patch is reduced, and the electromagnetic energy loss is reduced. In addition, the compact structure can reduce the area of the radio-frequency high-frequency board and reduce the product cost. The waveguide slotted antenna can increase the antenna spacing according to the design to increase the effective aperture of the radar, and almost no or little electromagnetic energy is lost in the electromagnetic energy transmission channel. The radar antenna is compact in structure and high in energy efficiency, the production cost can be reduced, the problems that a traditional automatic driving automobile radar antenna is large in feeder loss and narrow in bandwidth are well solved, and the energy utilization rate and the frequency bandwidth of antenna work are greatly increased.
Description
technical field [0001] The invention belongs to the technical field of automotive radar antennas, in particular to a radar antenna and a radar monitoring device for an automatic driving vehicle. Background technique [0002] At present, in the field of autonomous vehicle radar, most of the antennas used are microstrip antennas, such as figure 1 shown. The microstrip antenna has the advantages of easy processing, light weight, and low cost; but it also has many disadvantages, such as small bandwidth, large feeder loss at high frequencies, and the loss increases with the increase of feeder length. [0003] Since the beam width of the radar antenna is closely related to the aperture of the radar, the larger the effective size of the antenna, that is, the larger the aperture, the narrower the beam width. For autonomous vehicle radar, the beam width is required to be as narrow as possible to concentrate energy to detect longer distances and reduce clutter interference. Meanwhi...
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Patent Timeline
Login to View More IPC IPC(8): H01Q1/32H01Q1/36H01Q1/38H01Q1/50H01Q13/10H01Q23/00G01S7/02
CPCH01Q1/3233H01Q1/38H01Q1/36H01Q1/50H01Q23/00H01Q13/10G01S7/024
Inventor 于曙超孙浩张建军
Owner SHENZHEN ANNGIC TECH CO LTD