24 Anechoic Box Manufacturers in 2024
This section provides an overview for anechoic boxes as well as their applications and principles. Also, please take a look at the list of 24 anechoic box manufacturers and their company rankings. Here are the top-ranked anechoic box companies as of April, 2024: 1.ETS-Lindgren, 2.Labifix Innovations Pvt Ltd., 3.Meguro Electronics Sdn Bhd.
Table of Contents
What Is an Anechoic Box?
An anechoic box is a box-shaped electromagnetic wave shielding device covered with electromagnetic shielding material to prevent the transmission of electromagnetic waves from the outside to the inside and the leakage of electromagnetic waves generated inside to the outside without reflection.
A similar function is provided by an anechoic chamber, which, as the name suggests, is a room for shielding electromagnetic waves and is a very large facility. Anechoic boxes, on the other hand, are smaller and less expensive.
Anechoic boxes cover electromagnetic waves and high-frequency wave-related measuring instruments. They are box-shaped and can contain measuring objects, and some products are even sold in a portable form.
Uses of Anechoic Boxes
Anechoic boxes are widely used to evaluate wireless systems without external electromagnetic influence or to measure electromagnetic waves of unauthorized frequency signals outside during development. Careful attention should be paid when conducting tests in the development of systems and related products that use wireless communications, such as mobile networks, wireless LANs, and RFIDs.
This is because at the testing stage, products in the process of development have not yet been certified as conforming to technical standards, and any leakage of signal radio waves to the outside would be a violation of the Radio Law. Echoic boxes are used to prevent this situation. Conversely, an anechoic chamber is also used for measurement purposes to eliminate the influence of radio waves in use outside.
The same purpose can be achieved in an anechoic chamber, but since the installation of an anechoic chamber also requires a very expensive listing, anechoic boxes are easier to install if the object to be tested is not so large.
Principle of Anechoic Boxes
The principle of an anechoic box is that the interior of the box is covered with a material that absorbs electromagnetic waves, called a radio wave absorber, and the effect of these waves can be eliminated during the evaluation process. In addition to blocking electromagnetic waves from inside and outside, anechoic boxes must also prevent the reflection of electromagnetic waves inside when used for testing purposes.
For this reason, the interior of anechoic boxes is covered with a radio wave absorber. The material used for the radio wave absorber is baked ferrite, or ferrite particles, or carbon kneaded into urethane resin. The absorber can be used to absorb radio waves over a wide frequency range. In this process, a gradient in the concentration of ferrite and carbon is applied to achieve radiowave absorption over a wide frequency band.
In practice, however, achieving a gradient by painting is not feasible from a manufacturing cost perspective. Therefore, we processed them into a pyramid-like structure and lined them up to obtain the effect of layered absorbing materials.
Therefore, the interior walls of anechoic boxes and anechoic chambers have this three-dimensional geometric shape. By changing the height of the pyramid peaks according to the shielding characteristics of the radio wave absorbing material, it is possible to control the frequency of the electromagnetic waves that can be absorbed, etc.
Other Information on Anechoic Boxes
1. Frequency Bands Handled by Anechoic Boxes
The frequency band that can be shielded by anechoic boxes is generally from 700 MHz to 6 GHz (Sub6GHz), which is the Low Band of the microwave band. However, some models can evaluate frequencies up to about 30 GHz in the millimeter wave band.
Although the higher frequencies can be handled comparatively well, the longer wavelengths of the lower frequencies require high technological capabilities to achieve both miniaturization and compatibility. By combining multiple absorbers, each company is trying to increase the bandwidth of the shielded frequency.
2. Performance Indicators of Anechoic Boxes
Typical performance indicators of anechoic boxes are the frequency at which radio waves can be shielded and the amount of reflection attenuation, which indicates the shielding of those electromagnetic waves. As a rule of thumb, a reflection attenuation (absolute value) of 10dB is almost ineffective, while 20dB is a minimum level of shielding.
The average value is between 30 and 60 dB, which is exactly the level at which a cellular phone cannot recognize the signal and is treated as out of range. Therefore, a shielding effectiveness of 60 dB at the desired radio frequency is a standard performance index. It is also not desirable for the distribution value of reflection attenuation, which is the performance index of shielding effectiveness, to vary greatly inside an anechoic box.
Each manufacturer has its ingenuity in the arrangement of the radio wave absorber so that the antenna is stored inside the anechoic box and the distribution of the reflection attenuation is such that the desired variation is suppressed based on the distribution of the directivity of radio waves.
List of 24 Anechoic Box Manufacturers
*Including some distributors, etc.
Sort by Features
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- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
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- United States of America
- China
- India
- Japan
- Malaysia
- Romania
- Thailand
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ETS-Lindgren
Small Device Test Enclosures
Manufacturer Overview
ETS-Lindgren is an American manufacturer of electromagnetic as well as acoustic energy components and systems established in 1993 as a subsidiary of ESCO Technologies Company. Based in Cedar Park,Texas, the company produces a wide range of acoustic energy components including various probes and monitors, absorbers, amplifiers, and filters. Its products are used in wireless communication devices, safety testing and shielding applications, and noise removal. ETS-Lindgren primarily serves clients in the defense, government, wireless technology, and information technology sectors.
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Trek Equipment Corp.
ELECTROMAGNETIC ANECHOIC BOX
Company Overview
Trek Equipment Corporation, established in 1982 and headquartered in Sausalito, California, is a distributor of electronic test equipment. Representing NF Corporation and Micronix of Japan, the company provides a range of products such as current amplifiers and waveform generators, serving diverse electronic applications including semiconductor testing, precision instrumentation, and research and development. To provide financial flexibility and meet diverse equipment needs, the company also offers services such as rental options and variable-term leases.
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Microwave Absorbers Inc.
portable anechoic chamber
Manufacturer Overview
Microwave Absorbers Inc., founded in 2006 is a manufacturer of electromagnetic, RFID and microwave products based in Tokyo, Japan. Their products are Microwave Absorber Sheet, Microwave Broad Absorber Panel, Millimeter wave Broad Absorber Panel, Electromagnetic Wave Shield Cloth, Lightweight Shield Room and Anechoic Chamber and UHF-RFID Absorber Panel. The company has been a co-R&D in many institutes across Japan and participated in exhibits in America. They also have a local corporation in Hong Kong and received the Certification of ISO9001-2008 in 2014.
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Anritsu
CATR Anechoic Chamber
Manufacturer Overview
Anritsu Corporation, established in 1931 and based in Atsugi, Japan, is a manufacturer of electronic measuring instruments, quality assurance systems, and Information and Telecommunication equipment and devices. Its test and measurement products include power meters, power sensors, and conformance test systems, while X-ray inspection systems, metal detectors, and checkweighers ensure food safety and security. Other products like instrumentation-grade adapters and optical sensing equipment are used in IT. The company’s stock was listed in the 2nd section of the Tokyo Stock Exchange in 1961, and in 1968, it was listed in the 1st section.
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Nihon Denkei Co., Ltd
Anechoic Box
Manufacturer Overview
Nihon Denkei Co., Ltd, founded in Japan in 1950, is a manufacturer of electronic measuring instruments and systems. The company offers digital multimeters designed for accurate measurement of voltage, current, resistance, and other electrical parameters, a range of digital oscilloscopes for signal analysis, troubleshooting, and data visualization, signal generators, and power analyzers that are used for analyzing electrical power quality and energy consumption. The company has offices in India, Europe, and East Asia.
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Manufacturer Overview
Aimil Limited stands as a manufacturer and supplier of instrumentation products and services, headquartered in New Delhi, India. Its extensive product line serves various industries and comprises concrete testing equipment such as meters, and absorption test apparatus; hydraulic equipment, vital for power control in hydraulic systems; and medical equipment for diagnostic and therapeutic applications. Its specialized offerings find utility in construction, manufacturing, laboratories, and power and chemical plants, making it a pivotal player in delivering tailored instrumentation solutions.
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KAPOLNEK ACOUSTICS INDIA
Anechoic Box
Manufacturer Overview
Kapolnek Acoustics India, established in 2012 and headquartered in Haryana, India, is a manufacturer of noise control equipment and vibration control materials. The company offers attenuation doors with HF screening, noise protection enclosures for production machines, and acoustic doors and windows. Its products include multipurpose acoustic test stands, vibration control materials and equipment, and reverberation rooms and chambers. These products serve cinema halls, music studios, and audition halls, ensuring optimal sound and vibration control.
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Ecotone Systems
Anechoic Box
Manufacturer Overview
Ecotone Systems, located in Greater Noida, India, is a manufacturer of radio frequency and green building solutions. Its array of acoustical products, including RF shielded chambers, anechoic chambers, EMI and EMC chambers, along with customized absorbers, are utilized to support testing, development, and functionality of electronic systems in environments where managing electromagnetic interference is crucial. The company offers a diverse range of absorbers, tailored to specific needs with varying thicknesses and absorbencies. All products comply with international standards, and its RF absorbers are specifically tested as per NRL 8093 requirement
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Hottinger Brüel & Kjær
ANECHOIC TEST BOX
Manufacturer Overview
Brüel & Kjr, originally founded in 1942 with headquarters in Denmark, is a manufacturer of precision measuring technologies and measuring equipment. The company merged with Hottinger in 2019, a manufacturer of combustion engines and turbo chargers, and shared expertise in precision-accurate technologies, and Hottinger Brüel & Kjr, HBK, was born. HBK's new company's products include high-calibration systems, industrial electronics, vibration testing equipment, combustion engines, and acoustic end-of-line test systems for OEMs. HBK's services include custom solutions such as acoustic-tuned turbine engines used in wind-power infrastructure projects, among many others.
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Company Overview
Micronics is an ISO 9001-certified manufacturer of measurement systems, ultrasonic sensors, and flow meters that was established in Tokyo, Japan, in 1984. The company produces a broad range of measurement systems, parts, and components. These products include fixed flow meters, clamp-on flow meters, and portable flow meters. It also offers product testing, calibration, and troubleshooting services for customers requiring additional support. The company’s products are commonly used in water processing, energy management, and environmental protection operations.
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E&C Engineering K.K.
Anechoic Box
Company Overview
E&C Engineering K.K., established in 1991 and based in Yokohama, Japan, is a manufacturer and supplier of radio wave absorbers. The company's product range includes flexible and thin broadband-type radio absorbers, high-loss silicon rubber sheet, resonance and thin sheet-type radio absorbers, resonance and thin sheet-type radio absorbers, and 60.0GHz sheet radio wave absorbers. These products are used in applications such as 5G, Automotive, Aerospace and Defense, and EMC/EMI. These services include testing facility provision, technical skill support, radio wave test facility design, and manufacturing collaboration through mergers.
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Microwave Factory Co.,Ltd
Anechoic Box
Company Overview
Microwave Factory Co., Ltd. established on February 25, 2003, and based in Japan, is a manufacturer and supplier of Shielded Rooms and Boxes. The company's product range includes the ESD Visualizer, Anechoic Chamber, Radiowave Absorbers, an Antenna Measurement System, and an OTA Measurement System. These products are designed for tasks such as electromagnetic wave measurement, 5G communications testing, microwave assessments, and antenna measurements. Key industries benefiting from these products are Automotive, Aerospace and Defense, Electronics, and Telecommunications. Its services include automatic measurement software solutions, production of positioners like turntables, and supply of accessories for electromagnetic wave testing.
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Sonea Latechnology
Anechoic Box
Company Overview
Sonea Latechnology, founded in 2003, and based in Setagaya-ku, Tokyo, is a manufacturer and supplier of specialized acoustic equipment. The company's product range includes assembled anechoic rooms, assembled semi-anechoic rooms, anechoic boxes, soundproof chambers, and soundproof covers. These products are essential for precise acoustic measurements in various settings, from R&D environments in automobile and electronics industries to smaller components' noise assessment. They serve sectors such as automotive manufacturing, electronics, acoustic research, and machinery production. The company also offers design consultation, soundproof chamber construction, and soundproof cover production.
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Anechoic Box Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | ETS-Lindgren |
16.7%
|
| 2 | Labifix Innovations Pvt Ltd. |
11.1%
|
| 3 | Meguro Electronics Sdn Bhd |
11.1%
|
| 4 | Trek Equipment Corp. |
11.1%
|
| 5 | Milliwave Silicon Solutions, Inc. |
8.3%
|
| 6 | Microwave Absorbers Inc. |
8.3%
|
| 7 | Aimil |
5.6%
|
| 8 | Anritsu |
5.6%
|
| 9 | Sahajanand Laser Technology Ltd. |
2.8%
|
| 10 | NANJING LOPU TECHNOLOGIES |
2.8%
|
Derivation Method
The ranking is calculated based on the click share within the anechoic box page as of April 2024. 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
- Anritsu: 4,168
- Nihon Denkei Co., Ltd: 539
- KAPOLNEK ACOUSTICS INDIA: 20
Newly Established Company
- Labifix Innovations Pvt Ltd.: 2020 (4 years ago)
- KAPOLNEK ACOUSTICS INDIA: 2012 (12 years ago)
- J.V.Micronics: 2011 (13 years ago)
Company with a History
- Anritsu: 1895 (129 years ago)
- Aimil: 1932 (92 years ago)
- Nihon Denkei Co., Ltd: 1950 (74 years ago)
Anechoic Box Manufacturers in United States
*Including some distributors, etc.
Global Distribution of Anechoic Box Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
India
|
8 | 38.1% |
Japan
|
5 | 23.8% |
United States of America
|
3 | 14.3% |
China
|
2 | 9.5% |
Malaysia
|
1 | 4.8% |
| Romania | 1 | 4.8% |
Thailand
|
1 | 4.8% |
List of Anechoic Box Products
10 products are listed.
Micronics
Variable Attenator Radio Box/Shield Box TAURUS Series
10+ people viewing
A small size that is lightweight and easy to carry. Proposal at a very easy -to -purchase price of 200,000 yen or less. ･ Low price, lightweight, ...
Micronics
Radio dark box/shield box me8661a
10+ people viewing
Ideal for communication quality tests and antenna tests by spatial combination of mobile phones, wireless LANs, wireless communication devices, etc...
