Millimeter wave radar system and antenna structure

Abstract

The utility model provides a millimeter wave radar system and an antenna structure, the millimeter wave radar system comprises a millimeter wave radar and an antenna structure, the millimeter wave radar comprises a transmitting module and a receiving module, the antenna structure comprises a circuit board, a chip, a radiation antenna group and a puppet antenna group, the radiation antenna group is connected with a pin of the chip, and the puppet antenna group is connected with the chip. The radiating antenna group is used for converting current output by the transmitting module into radio waves and radiating the radio waves to surrounding space, the radiating antenna group is also used for converting the received radio waves into current and transmitting the current to the receiving module, and the puppet antenna group is adjacent to the radiating antenna group and is coupled with the radiating antenna group. The utility model provides a vehicle-mounted millimeter wave radar and an antenna structure, the millimeter wave radar comprises a transmitting module and a receiving module, and the antenna structure comprises a circuit board, a chip, a radiating antenna group and a puppet antenna group. The radar has different coverage ranges and the maximum detectable distance, and the differentiated requirements of customers are met.

Description

Technical Field

[0001] The utility model relates to the field of radar, in particular to a millimeter wave radar system and an antenna structure. Background Art

[0002] In recent years, millimeter-wave radar sensors have been widely used in advanced driver assistance systems and environmental monitoring systems. Thanks to the performance advantages of millimeter-wave radar, it can detect targets in various scenarios with high accuracy and sensitivity in terms of distance, speed and angle. The blind spot monitoring system BSD (Blind Spot Detection) is a function with a high configuration rate in current vehicles, and all its functions are based on the blind spot detection of the two rear millimeter-wave radars.

[0003] The large-scale installation demand and popularization of BSD radars are also accompanied by the differentiation of functions among different OEM customers. Specifically speaking of the radar indicators themselves, the core differences are mainly in the antenna coverage range FoV (Field of View) and the maximum detectable distance. For this reason, this application proposes a millimeter-wave radar system and antenna structure to realize radars with different coverage ranges FoV (Field of View) and maximum detectable distances to meet the differentiated needs of customers. Utility Model Content

[0004] The utility model aims to provide a vehicle-mounted millimeter wave radar and antenna structure, which can realize different coverage ranges and maximum detectable distances of the radar by selecting a patch or not for a resistor device at one end of a puppet antenna in the radar.

[0005] To achieve the above objectives, the present invention proposes the following technical solutions: a millimeter wave radar system and antenna structure, comprising:

[0006] Millimeter wave radar, the millimeter wave radar comprising a transmitting module (1) and a receiving module (2);

[0007] An antenna structure, the antenna structure comprising a circuit board (3), a chip (4), a radiating antenna group and a puppet antenna group (5), the radiating antenna group being connected to the pins of the chip (4), the radiating antenna group being used to convert the current output by the transmitting module (1) into radio waves and radiate them to the surrounding space, the radiating antenna group being also used to convert the received radio waves into current and transmit them to the receiving module (2), the puppet antenna group (5) being adjacent to the radiating antenna group and coupled to the radiating antenna group;

[0008] A soldering pad (6) is left between one end of the puppet antenna group (5) and the GND on the surface of the circuit board (3);

[0009] The puppet antenna group (5) and the circuit board (3) include a short circuit mode and an open circuit mode. If a resistor is added to the puppet antenna group (5) when the circuit board (3) is mounted, so that the puppet antenna group (5) is connected to the GND on the surface of the circuit board (3), the short circuit mode is entered; if no resistor is added, that is, the puppet antenna group (5) is not connected to the GND on the surface of the circuit board (3), the open circuit mode is entered.

[0010] Furthermore, in the present invention, the transmitting module includes Tx1 and Tx2, and the receiving module includes Rx1, Rx2, Rx3, and Rx4.

[0011] Beneficial effects: The technical solution of this application has the following technical effects:

[0012] The present invention provides a vehicle-mounted millimeter wave radar and an antenna structure. The millimeter wave radar comprises a transmitting module (1) and a receiving module (2). The antenna structure comprises a circuit board (3), a chip (4), a radiation antenna group and a puppet antenna group (5). By selecting whether to patch or not a resistor device at one end of a puppet antenna in the radar, the radar can have different coverage ranges and maximum detectable distances, thereby meeting the differentiated needs of customers.

[0013] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0014] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 This is a comparison diagram of the directional diagram results of the utility model.

[0018] Figure 3 This is a comparison diagram of two working modes of the utility model.

[0019] In the figure, the meanings of the various reference numerals are as follows: 1. transmitting module; 2. receiving module; 3. circuit board; 4. chip; 5. puppet antenna group; 6. soldering pad. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0021] like Figure 1-3 As shown, a millimeter wave radar system and antenna structure include a millimeter wave radar and an antenna structure. The millimeter wave radar includes a transmitting module 1 and a receiving module 2. The transmitting module includes Tx1 and Tx2, and the receiving module includes Rx1, Rx2, Rx3, and Rx4.

[0022] The antenna structure includes a circuit board 3, a chip 4, a radiating antenna group and a puppet antenna group 5. The radiating antenna group is connected to the pins of the chip 4. The radiating antenna group is used to convert the current output by the transmitting module 1 into radio waves and radiate them to the surrounding space. The radiating antenna group is also used to convert the received radio waves into current and transmit them to the receiving module 2. The puppet antenna group 5 is adjacent to the radiating antenna group and coupled with the radiating antenna group.

[0023] A soldering pad 6 is left between one end of the puppet antenna group 5 and the GND on the surface of the circuit board 3;

[0024] There are short-circuit mode and open-circuit mode between the puppet antenna group 5 and the circuit board 3. If a resistor is added to the puppet antenna group 5 when the circuit board 3 is mounted, so that the puppet antenna group 5 is connected to the GND on the surface of the circuit board 3, the short-circuit mode is entered; if no resistor is added, that is, the puppet antenna group 5 is not connected to the GND on the surface of the circuit board 3, the open-circuit mode is entered.

[0025] like Figure 2 As shown, the antenna radiation patterns of the two modes are different, so that the radar can achieve different coverage ranges FoV (Field of View) and maximum detectable distances.

[0026] By selecting the patch or not for the resistor device at one end of the radar puppet antenna system, different radar coverage FoV (Field of View) and maximum detectable distance can be achieved, that is, two working modes, short circuit mode and open circuit mode are mode 1 and mode 2 respectively. Figure 3 As shown in the figure, Mode 1 can achieve wide-angle coverage, and has a clear advantage in detection distance of ±80° to ±40°; Mode 2 can achieve a detection distance of 120 meters, and has a longer detection distance within ±20° than Mode 1, meeting the differentiated needs of customers.

[0027] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0028] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A millimeter wave radar system and antenna structure, characterized in that: include: Millimeter wave radar, the millimeter wave radar comprising a transmitting module (1) and a receiving module (2); An antenna structure, the antenna structure comprising a circuit board (3), a chip (4), a radiating antenna group and a puppet antenna group (5), the radiating antenna group being connected to the pins of the chip (4), the radiating antenna group being used to convert the current output by the transmitting module (1) into radio waves and radiate them to the surrounding space, the radiating antenna group being also used to convert the received radio waves into current and transmit them to the receiving module (2), the puppet antenna group (5) being adjacent to the radiating antenna group and coupled to the radiating antenna group; A soldering pad (6) is left between one end of the puppet antenna group (5) and the GND on the surface of the circuit board (3); The puppet antenna group (5) and the circuit board (3) include a short circuit mode and an open circuit mode. If a resistor is added to the puppet antenna group (5) when the circuit board (3) is mounted, so that the puppet antenna group (5) is connected to the GND on the surface of the circuit board (3), the short circuit mode is entered; if no resistor is added, that is, the puppet antenna group (5) is not connected to the GND on the surface of the circuit board (3), the open circuit mode is entered.

2. A millimeter wave radar system and antenna structure according to claim 1, characterized in that: The transmitting module includes Tx1 and Tx2, and the receiving module includes Rx1, Rx2, Rx3, and Rx4.

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