5 Anechoic Chamber Manufacturers in 2023
This section provides an overview for anechoic chambers as well as their applications and principles. Also, please take a look at the list of 5 anechoic chamber manufacturers and their company rankings.
Table of Contents
What Is an Anechoic Chamber?
An anechoic chamber is an experimental and research facility that does not leak electromagnetic waves to the outside. By installing a radio wave absorber inside a shielded room, electromagnetic waves are not only not leaked outside but are also not affected by external electromagnetic waves.
The disadvantage of a shielded room is that it cannot prevent the diffuse reflection of electromagnetic waves in the interior space. However, an anechoic chamber can prevent the diffuse reflection of electromagnetic waves, making it possible to create an environment similar to a free space.
In recent years, we are surrounded by many sources of electromagnetic radiation, such as electrical and electronic equipment, wireless devices, and information systems. One of the concerns is the adverse effects of electromagnetic waves generated by these electronic devices on the surrounding equipment.
Therefore, anechoic chambers, which block out the influence of the surrounding environment, are beginning to play a major role in product performance verification and noise testing of wireless devices and electronic equipment such as smart phones and wireless LANs.
Structure and Principles of an Anechoic Chamber
The purpose of using an anechoic chamber is to determine how electrical and electronic equipment is affected by external electromagnetic radiation. They are also used to measure how they affect the outside world.
Anechoic chambers can be divided into two main structural categories.
Types of Anechoic Chambers
One is a 6-sided anechoic chamber with absorbers installed on all six surfaces (top, bottom, front, back, left, and right). The other is a "5-sided anechoic chamber" in which absorbers are installed on a total of five surfaces other than the floor.
The 5-sided anechoic chamber is characterized by the fact that absorbers are not attached to the floor, assuming that radio wave reflection occurs at the ground (earth).
Mechanism for Blocking External Electromagnetic Waves
An anechoic chamber is characterized by the fact that it blocks both external and internal electromagnetic waves. Outside the anechoic chamber, outside radio waves are prevented from entering to prevent malfunctions during testing.
On the other hand, inside the anechoic chamber, an absorber is installed on the inside of the wall. The role of this absorber is to prevent radio waves from being reflected inside the room.
In order to prevent the inspection equipment from catching the reflected radio waves in the room, the absorber on the wall surface absorbs the radio waves generated inside the room, thereby preventing them from being reflected inside the room. The base of a radio wave anechoic chamber is a shielded room.
Shielding materials that not only absorb within the material but also reflect on its surface are used to completely reflect radio waves, thereby achieving a large shielding effect. An anechoic chamber is a room in which electromagnetic wave absorbers are installed. Important properties of absorber materials can be divided into three main types. They are magnetic, dielectric, and resistive properties.
It is necessary to properly determine these properties in light of the absorption bandwidth and other conditions to be achieved. Ferrite is the mainstream material that satisfies these requirements.
Ferrite utilizes the properties of magnetic loss, such as natural resonance and magnetic wall resonance, in response to high-frequency AC magnetic fields. In addition, the absorbed radio wave energy is converted into heat energy inside the absorber, thereby suppressing the reflection of radio waves.
Anechoic Chamber Pricing
For a simple electromagnetic wave shield, the price of an anechoic chamber, which is sold as a catalog product, is several hundred thousand yen. However, if a full-scale anechoic chamber is to be installed, the price will vary greatly, depending on the size of the anechoic chamber, as modifications to the building structure may be necessary.
There are many factors that determine the size of an anechoic chamber. For example, the size of the object you want to measure, the frequency band you want to shield from radio waves, and the standard of the test (1 m method or 3 m method, etc.).
These factors will determine whether the size of the device will fit in an existing building or whether a new building will need to be constructed. The final size of the anechoic chamber will then determine the price range.
It should be noted that an anechoic chamber is not inexpensive, so careful consideration is required. In addition, the price will be even higher if you have the appropriate measuring equipment, so you need to confirm the measuring equipment to be used in advance.
Because purchasing an anechoic chamber can be expensive, some anechoic chambers are available for rent. With a rental, it is not necessary to install expensive anechoic chambers on one's own, and thus the operation can be done at a lower cost.
To use an anechoic chamber rental service, you do not bring your own anechoic chamber, but visit a facility that has anechoic chambers. The most common way of using an anechoic chamber is to pay an hourly or daily fee to use the anechoic chamber at the facility.
If you use an anechoic chamber at a high frequency, such as daily, you will likely need to purchase one on your own. At this time, it is necessary to fully consider the size of the anechoic chamber, the type of measuring equipment, and other factors that may result in a high price.
However, if the frequency of use is infrequent, rental may be satisfactory, and costs can be significantly reduced through the use of rentals.
List of 5 Anechoic Chamber Manufacturers
*Including some distributors, etc.
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Frankonia
Anechoic Chambers
Company Overview
Frankonia specialzes in equipment used to test for radio wave emissions for antennas, the automotive industry and the military. Frankonia makes equipment used to create a chamber for the tests to be carried out such as wall panals and chambers. They also provide the equipment required for the testing. Founded in 1987 Frankonia is the industry leader in electromagnetic compatibility solutions. Based in Bavaria, Germany Frankonia offer a wide range of services from consulting, construction and manufacturing. Frankonia have a worldwide customer base with their unique products. They tailor to the individual needs to each of their customers.
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Anechoic Chamber Manufacturer Ranking
*Including some distributors, etc.Ranking as of March 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Holland Shielding Systems BV | 100% |
Derivation Method
The ranking is calculated based on the click share within the anechoic chamber page as of March 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
Newly Established Company
- TDK RF Solutions: 1987 (36 years ago)
- Holland Shielding Systems BV: 1985 (38 years ago)
Company with a History
- Holland Shielding Systems BV: 1985 (38 years ago)
- TDK RF Solutions: 1987 (36 years ago)
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