12 Radar Absorbing Material Manufacturers in 2022
This section provides overview, applications, and principles of radar absorbing materials. Also, please take a look at the list of 12 radar absorbing material manufacturers and their company rankings.
Table of Contents
What Is a Radar Absorbing Material?
Radar absorbent material (RAM) is a material that absorbs incident radio waves and suppresses their reflection. It is also called a radio wave-absorbing material. The energy of incident radio waves is converted into heat energy and consumed.
Several types of radar absorbing materials have different principles of absorbing radio waves depending on the material and shape. The frequency band that can be absorbed differs depending on the type, so it is necessary to select an radar absorbing material that matches the application and design it appropriately.
Uses of Radar Absorbing Materials
The main applications of radar absorbing materials include noise suppression for electronic devices such as communication equipment and home appliances, anti-reflection for ETC and radar, and evaluation facilities such as anechoic chambers. Radar absorbing materials with characteristics suited to each application are used.
For example, for electronic equipment, a sheet type is used that can shield against specific frequencies emitted by the electronic equipment and can be incorporated into the electronic equipment. On the other hand, for evaluation facilities such as anechoic chambers, radar absorbing materials in a three-dimensional pyramid shape are used, which have absorption characteristics over a wide frequency band.
Principles of Radar Absorbing Materials
There are several types of radar absorbing materials depending on the principle of absorbing radio waves, and the three main types are resistive, inductive, and magnetic.
The resistive type absorbs the energy of radio waves by converting the induced current generated by the incident of radio waves on the conductor into heat energy by consuming it due to the conductor's own resistance.
The dielectric type uses the resistance component of the carbon particles themselves and the capacitance component between the carbon particles by mixing carbon particles with a dielectric such as foamed polyethylene or rubber. When the incident radio wave is low frequency, almost no electric current is generated, but as the frequency increases, the impedance of the capacitance component decreases, and an electric current flows. The higher the frequency, the lower the impedance of the capacitive element. The higher the frequency, the more current flows, consumed by the resistor and converted into heat energy to absorb the radio wave energy.
Dielectric types are available in pyramid or sheet forms, depending on their shape. The pyramid type can be designed to absorb a wide range of frequencies because the frequency band to be absorbed is determined not only by the material mixed in but also by its shape.
The magnetic type is made of ferrite or other magnetic materials molded into tile-like shapes, which absorb radio wave energy through magnetic loss. The magnetic type can provide absorption characteristics in the low-frequency band compared to the dielectric type. For this reason, radar absorbing materials have a wide frequency range by combining dielectric and magnetic types.
Other absorbers have a phase difference of 180 degrees concerning the incident wave to cancel out the reflected wave.
List of 12 Radar Absorbing Material Manufacturers
*Including some distributors, etc.
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Radar Absorbing Material Manufacturer Ranking
*Including some distributors, etc.Ranking as of January 2023 in United States
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | E-SONG EMC | 46.2% |
| 2 | MGV | 11.5% |
| 3 | T-Global Technology | 11.5% |
| 4 | Fujipoly | 7.7% |
| 5 | Microwave Absorbers | 7.7% |
| 6 | Cuming Microwave | 3.8% |
| 7 | SEKISUI POLYMATECH | 3.8% |
| 8 | Dexerials | 3.8% |
| 9 | Murata Manufacturing Co., Ltd. | 3.8% |
Ranking as of January 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | E-SONG EMC | 31.1% |
| 2 | T-Global Technology | 13.3% |
| 3 | MGV | 8.9% |
| 4 | Fujipoly | 8.9% |
| 5 | SEKISUI POLYMATECH | 8.9% |
| 6 | Microwave Absorbers | 8.9% |
| 7 | Murata Manufacturing Co., Ltd. | 6.7% |
| 8 | Cuming Microwave | 4.4% |
| 9 | KITAGAWA INDUSTRIES CO., LTD. | 4.4% |
| 10 | Toda Kogyo | 2.2% |
| 11 | Dexerials | 2.2% |
Derivation Method
The ranking is calculated based on the click share within the radar absorbing material page as of January 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
- Murata Manufacturing Co., Ltd.: 77,581
- Toda Kogyo: 1,303
- KITAGAWA INDUSTRIES CO., LTD.: 507
Newly Established Company
- E-SONG EMC: 1991 (32 years ago)
- Fujipoly: 1978 (45 years ago)
- KITAGAWA INDUSTRIES CO., LTD.: 1963 (60 years ago)
Company with a History
- Toda Kogyo: 1823 (200 years ago)
- KEMET: 1919 (104 years ago)
- Murata Manufacturing Co., Ltd.: 1944 (79 years ago)
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