Hi-Link HLK-LD2410C Manual do utilizador - Página 18

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HLK-LD2410C

Shenzhen Hi-Link Electronic Co., Ltd.

8. Radome design guidelines

8.1 Effects of radomes on mm wave sensor performance

• Radar waves are reflected on the radome boundary

• Losses in total radar radiated or received power

• The reflected wave enters the receiving channel, affecting the isolation between the

transmitting and receiving channels

• Reflections may degrade the standing wave of the antenna, further affecting the antenna gain

• Radar waves will suffer loss when propagated in the medium. In theory, the higher the

frequency, the greater the loss will be

• Electromagnetic waves undergo a certain degree of refraction as they pass through a medium

• Affects the antenna's radiation pattern, which in turn affects the sensor's coverage

8.2 Radome design principles

8.3

Common materials

• Understand the material and electrical characteristics of the radome before designing

• The table on the right is for reference only, the actual value should be confirmed with the

supplier

• Height H from the antenna to the inner surface of the radome

• If there is enough space, it is preferred to recommend 1 times or 1.5 times the wavelength

• For example, 12.4 or 18.6mm is recommended for 24.125GHz

• Error control: ±1.2mm

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