Search

KR-102962392-B1 - Radiation energy uniform structure of millimeter-wave antennas

KR102962392B1KR 102962392 B1KR102962392 B1KR 102962392B1KR-102962392-B1

Abstract

The present invention discloses a uniform radiation energy structure for a millimeter-wave antenna, comprising a transmitting array antenna and/or a receiving array antenna composed of at least one comb-shaped antenna assembly; the comb-shaped antenna assembly comprises a strip-shaped antenna body and a microstrip radiation assembly, wherein one end of the antenna body may be connected to a millimeter-wave circuit capable of generating millimeter waves, and the microstrip radiation assembly is composed of a plurality of intermediate microstrip radiation units spaced apart at the intermediate end of the antenna body and a terminal microstrip radiation unit installed at the end of the antenna body, wherein the area of the intermediate microstrip radiation units gradually increases from one end close to the millimeter-wave circuit toward the other end so that the distribution of external radiation energy for each intermediate microstrip radiation unit approaches the average.

Inventors

  • 주 웨이
  • 량 챠오타오
  • 촹 하오린
  • 린 친후이
  • 양 팅팅

Assignees

  • 지앙수 캉루이 뉴 머티리얼 테크놀로지 컴퍼니 리미티드

Dates

Publication Date
20260507
Application Date
20201210

Claims (17)

  1. At least one comb-shaped antenna assembly comprising a long strip-shaped antenna body and a microstrip antenna radiation assembly installed on the antenna body, wherein one end of the antenna body is connected to a millimeter wave circuit capable of generating millimeter waves; the microstrip antenna radiation assembly is composed of a plurality of intermediate microstrip antenna radiation units spaced apart and installed at the intermediate end of the antenna body, and a terminal microstrip antenna radiation unit installed at one end of the antenna body far from the millimeter wave circuit, wherein the area of the intermediate microstrip antenna radiation unit at the end far from the millimeter wave circuit is not smaller than the area of the intermediate microstrip antenna radiation unit at the end adjacent to the millimeter wave circuit. The area of the above intermediate microstrip antenna radiation unit gradually increases between one end of the antenna body connected to the millimeter wave circuit and the end of the antenna body, and In order for the resonance point of the intermediate microstrip antenna radiation unit to be maintained at a position close to 76.5 GHz, the intermediate microstrip antenna radiation unit has a rectangular shape with a length-to-width ratio of 1.2 to 1.3:1, and in order for millimeter-wave energy to be radiated outward with higher efficiency, the area ratio of two adjacent intermediate microstrip antenna radiation units with increasing areas is 1.1 to 1.2:1. Uniform radiation energy structure of a millimeter wave antenna.
  2. In paragraph 1, A uniform radiation energy structure of a millimeter-wave antenna in which locally adjacent intermediate microstrip antenna radiation units have the same area.
  3. delete
  4. In paragraph 1, The above-mentioned terminal microstrip antenna radiation unit is a uniform radiation energy structure of a millimeter-wave antenna having a square shape.
  5. In any one of paragraphs 1, 2 and 4, Radiation energy uniformity structure of a millimeter-wave antenna, wherein a rectangular notch is provided at the portion where the terminal microstrip antenna radiation unit and the antenna body are connected.
  6. In any one of paragraphs 1, 2 and 4, A uniform radiation energy structure for a millimeter-wave antenna, wherein each of the above intermediate microstrip antenna radiation unit and terminal microstrip antenna radiation unit is arranged and installed spaced apart from the antenna body in the same direction and at an inclined angle.
  7. In paragraph 6, Radiation energy uniform structure of a millimeter-wave antenna, wherein the above-mentioned intermediate microstrip antenna radiation unit and terminal microstrip antenna radiation unit each form an inclined angle of 45 degrees with the antenna body.
  8. In paragraph 6, One corner of the above intermediate microstrip antenna radiation unit is connected to the antenna body, forming a uniform radiation energy structure of a millimeter-wave antenna.
  9. delete
  10. delete
  11. delete
  12. delete
  13. delete
  14. delete
  15. delete
  16. delete
  17. delete

Description

Radiation energy uniform structure of millimeter-wave antennas The present invention relates to a uniform radiation energy structure for a millimeter-wave antenna, and more specifically, to an antenna structure capable of effectively improving the millimeter-wave operating distance with desirable gain. As consumers increasingly prioritize the safety of automobile use and the development of related science and technology gradually matures, detection devices that assist in preventing collision accidents during driving by detecting various dynamic situations around the vehicle (e.g., information such as the relative position, relative speed, and angle of vehicles, pedestrians, or other obstacles) are also being applied more widely; the technical means currently applied to common collision avoidance detection devices can be roughly divided into the following categories. Ultrasound: As a mechanism for measuring the distance of an object using ultrasound, ultrasonic pulse waves are transmitted and received by a transducer using an ultrasonic sensor. Although such ultrasonic sensors maintain a certain level of accuracy by performing corrections based on changes in parameters such as temperature and voltage when operating or before reading each measurement range; however, when used, objects that are too small cannot effectively reflect ultrasound, so if the object is too small, it cannot reflect enough ultrasound to satisfy the detection requirements of the ultrasonic sensor, thereby limiting its application. Infrared: Utilizing the principle of distance measurement based on light reflection, it emits light through a single infrared LED, receives the infrared signal via another infrared receiving assembly, measures the intensity, and determines the distance based on the magnitude of the intensity; however, the infrared distance measurement angle is small and lacks completeness. Furthermore, since the basic principle of detection relies on light reflection, using it on surfaces with low reflection efficiency (e.g., dark-colored surfaces) significantly affects the detection results and leads to limitations in applications. Laser: A laser beam is transmitted using a transmitter and time (T1) is recorded, and the time (T2) is when the laser beam is irradiated onto an object, reflected back, and the sensor receives the returned light. If we assume that the speed at which the laser beam propagates in the air is V, the distance between the sensor and the object can be calculated as S = V * (T2 - T1) / 2; however, when using a laser device, if foreign substances such as water or dust adhere to the surface of the transmitter, they reflect the laser light and generate a false signal, and the accuracy of laser distance measurement is low, which becomes a disadvantage in use. Millimeter wave: Electromagnetic waves with wavelengths ranging from 1 mm to 10 mm (frequency from 30 GHz to 300 GHz) can be used to calculate distances by measuring the time difference between transmission and reception; if applied to long-range detection for vehicles, using the 7 GHz millimeter wave frequency band is relatively suitable, and the millimeter wave frequency band currently applied to automotive surround radar is approximately 24 GHz, and since the wavelength of the millimeter wave is the longest, it is less affected by environmental weather and is therefore most suitable for long-range detection. In an antenna structure for transmitting or receiving millimeter waves, which is traditionally applied to millimeter wave devices, as illustrated in the first drawing, the structure of the millimeter wave antenna (B) can be primarily etched directly onto a circuit board (C) and includes two parts such as a transmitting array antenna (B1) and a receiving array antenna (B2), each composed of a plurality of comb-shaped antenna assemblies (2); in the embodiment illustrated in FIG. 1, the transmitting array antenna (B1) is composed of three comb-shaped antenna assemblies (2), and the receiving array antenna (B2) is composed of four comb-shaped antenna assemblies (2) (the comb-shaped antenna assemblies (2) located on both sides of the receiving array antenna (B2) perform isolation and do not introduce millimeter waves), and in actual application, the number of these comb-shaped antenna assemblies (2) can be adjusted according to the millimeter wave transmission strength and reception sensitivity to satisfy different demands. The above traditional comb-shaped antenna assembly (2) structure is primarily formed by connecting a plurality of microstrip radiation units (22) in series, each microstrip radiation unit (22) having a fixed size and a rectangular (or square) structure, and is arranged in the forward direction at equal intervals on a strip-shaped antenna body (21) to form a comb-shaped antenna assembly (2) configured as a serial feeding structure; When a comb-shaped antenna assembly (2) of this serial feeding structure is applied to a transmitting ar