Radar sound-absorbing material refers to a material that can absorb or reflect electromagnetic waves, reduce the incident electromagnetic energy, thereby increasing the frequency of the echo of the measured object and achieving the measurement purpose

Radar absorbing materialIt is a material used to absorb electromagnetic signals, usually made of high-purity and highly flexible metal wires or sheets, with excellent radar reflection coefficient, electromagnetic shielding function, and absorption performance. It is widely used in fields such as radar, industrial monitoring, and communication, and has important application value.

1、 Concept and characteristics of radar absorbing materials

Radar sound-absorbing material refers to a material that can absorb or reflect electromagnetic waves, reduce the incident electromagnetic energy, thereby increasing the frequency of the echo of the measured object and achieving the measurement purpose.
Radar absorbing materials are low loss microwave absorbers used in the manufacturing of electronic devices, such as antenna covers, horn covers, etc.

High reflection coefficient: Radar absorbing materials have a high reflection coefficient, which can absorb excess electromagnetic signals and reduce signal loss.

Electromagnetic shielding function: Radar absorbing materials can absorb excess electromagnetic signals, thereby maintaining signal integrity and reducing the risk of signal interference.

Excellent absorption performance: Radar absorbing materials have excellent absorption performance and can maintain excellent performance in different frequency ranges.

Application scenario: Radar absorbing materials are commonly used to manufacture various radar, industrial monitoring, communication and other equipment to improve product quality and safety.

2、 Types of Radar Absorbing Materials

1. Metals: mainly including copper, aluminum, magnesium, etc;

2. Non metallic materials: mainly rubber;

3. Composite type: there are ceramic metal hybrid type, ceramic glass hybrid type, ceramic plastic hybrid type, and organic fiber composite type;

4. Other types: includingFerriteMagnetostriction, silicon carbide (pyroelectric), and high-frequency absorbing materials containing special components.

III Main performance requirements for radar sound-absorbing materials

1. Having the same transmittance coefficient for different frequency bands;

2. Has good absorption characteristics for incident energy of different frequencies;

3. Has good attenuation effect on incident energy of different shapes;

4. Has low dielectric loss;

5. It has a certain mechanical strength to ensure that it will not be damaged during use.

6. Easy to use and low cost.

4 Introduction to various commonly used sound-absorbing structures

1. Thin plate type: composed of thin plates bonded with adhesive, generally with a thickness of 0.5-1.5cm, suitable for the mid to high frequency range;

2. Honeycomb: composed of porous thin-walled structures, forming a honeycomb shape with a general thickness of about 0.5cm, suitable for high frequency range;

3. Round tube shape: composed of hollow or multiple hollow tubes, filled with air inside and sealed with adhesive and sealant on the outside, capable of withstanding certain pressure;