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This section provides an overview for directional couplers as well as their applications and principles. Also, please take a look at the list of 12 directional coupler manufacturers and their company rankings. Here are the top-ranked directional coupler companies as of December, 2024: 1.ET Industries, 2.SPINNER GmbH, 3.Krytar, Inc..
Table of Contents
A directional coupler is a specialized piece of equipment with four ports, designed to extract radio waves proportional to the forward and reflected waves in a transmission line.
Of these four ports, two are designated for the transmission line's input and output, one typically serves as an isolation port, and the other as a coupling port for extracting radio waves. Variants known as bidirectional couplers have no isolation ports and feature two coupling ports instead.
The efficiency of directional couplers is gauged by their ability to differentiate between forward and reflected waves, a trait known as directionality. This directionality is quantified as 10 log(P1 / P4) - 10 log(P1 / P3), and is measured in decibels (dB).
Using directional couplers to measure radio waves helps in assessing the signal conditions within transmission lines. They are crucial in monitoring applications, such as mobile phone base stations, antennas, and cable television networks.
*Including some distributors, etc.
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Electromagnetic Technologies Industries, Inc. (ET Industries) is headquartered in New Jersey and started its business as a manufacturer of RF components, subsystems, and systems in 1996. Their product categories consist of 5G antenna systems, power dividers or combiners, couplers, comparators, antennas, beamforming networks, and other RF active components. The company provides specific custom designs to meet customers’ requirements. Their main customers include U.S. Military, NASA, and other military contractors as well as the Indian Space Agency, and MITRE Corporation. ET Industries has 20 sales representatives in the USA (Eastern, Midwest, and Western), Europe, South America, and Asia.
Krytar, Inc. is an American ISO 9001 certified manufacturer specializing in microwave and millimeter wave components and devices since 1975. Based in Sunnyvale, California, the company produces a range of products including directional couplers, power dividers, and terminations that absorb wave signals and prevent reflection — as well as RF components and test equipment for commercial and military use. Krytar products are used in the defense, aerospace, and communications sectors. The company also provides engineering and calibration services for clients with demanding specifications.
NARDA-ATM, formerly known as Advanced Technical Materials Inc. and acquired by Narda-MITEQ in 2016, is an American manufacturer based in Hauppauge, New York, specializing in microwave and radio frequency (RF) components. NARDA-ATM offers a wide range of components, including coaxial, waveguide, Ka-band satellite communication (satcom), and space-qualified microwave components. These components can be manufactured to meet commercial standards or full military specifications, such as military flight and space quality standards. Equipped with microwave measurement capability up to 50 GHz, as well as Computer-Aided Design (CAD) software and Computer Numerical Control (CNC) machining equipment, NARDA-ATM offers custom component design and manufacturing services.
Mini-Circuits, founded in 1968 and headquartered in Brooklyn, New York, is a designer, manufacturer, and distributor of RF and microwave components and integrated assemblies. The company’s range of products includes adapters, amplifiers, attenuators, cables, and frequency multipliers. Mini-Circuits' products are used to provide essential components and solutions for RF and microwave communication, signal processing, and testing across industries such as telecommunications, aerospace, defense, research, and manufacturing. Their offerings enable efficient signal transmission and manipulation in diverse applications where RF and microwave technologies play a role. The company also holds ISO 9001, AS 9100, and ISO 14001 certifications.
Pasternack headquartered in Irvine, California, is part of the Infinite Electronics family of brands, established in 1972 by Murray Pasternack, as a supplier of RF and Microwave components. The company retails various types of products, including connectors, switches, cables, couplers, and filters. They have over 40,000 in-stock products and have partnered with 19 international distributors serving customers in over 35 countries. The company offers contract assembling, where they assemble custom Cables for same-day shipping. The company earned the ISO 9001 certification in 2015 and offers expert technical support and 24/7 customer service.
Nanjing Huamai Technology Co. Ltd., founded in 1998 and based in Nanjing, China, is a manufacturer and supplier of optical communication solutions. Its products include fiber cables, RF components, and FTTX equipment, including data centers, telecommunication infrastructure, and value-added services for the ICT industry. It also provides IoT and system integration solutions such as IoT information infrastructure network construction, integration of weak current systems, and development of smart application platforms. The company is ISO 9001, ISO 14001, and ISO 45001 certified, and is listed on the Shanghai Stock Exchange.
Sichuan Keenlion Microwave Technology Co., Ltd., established in 2004, is an ISO9001:2015 certified designer and manufacturer of Microwave Passive Components used for signal processing based in Chenghua, Chengdu. The company offers a wide range of components including multiplexers, filters, and couplers used in cluster communication, aerospace, and mobile communication as well as electronic countermeasures and military equipment. Sichuan Keenlion Microwave Technology Co. also offers a power divider splitter that enables efficient and effective signal distribution while minimizing signal loss.
Spectrum Elektrotechnik, a company founded in 1981 and headquartered in Munich, Germany, is a manufacturer and supplier of electrical components and solutions. The company specializes in producing a wide range of electrical products, including cable assemblies, connectors, adapters, and phase shifters. Their products find applications in power distribution, telecommunications, and automotive. The company also provides customer service, such as order processing, technical assistance, and after-sales support to meet the needs of its customers.
NEOSID., Ltd., founded in Germany, in 1923 is a manufacturer of custom ferrites, inductances and RFID transponders. The company's product portfolio includes Shielded Inductors, Air core coils, Rod core chokes, Transponder coils and Filter and Coil Kits. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company provides services such as Product Selection Guidance, Engineering Support, New Product Design and Development and Custom Manufacturing.
Radiall, a global company founded in 1952, is a great manufacturer and supplier of interconnect solutions for industrial markets, including energy, sensors, and private communication networks. The company provides RF and fiber optic solutions, which offer support for intricate applications in the transportation, automation, and renewable energy industries. These applications encompass power plants, wind farms, and oil rigs. The company also collaborates with customers worldwide, delivering award-winning products and services. Leveraging its technical expertise and global existence, the company empowers people and drives the success of diverse industries.
DETI SAS, founded in 1995 and headquartered in Gouesnou, France, is a manufacturer and supplier of RF and microwave solutions. The company specializes in designing and manufacturing passive microwave products for military applications. It supplies dedicated filters and couplers or combiners for electronic warfare and satcom as well as EMC lab test markets. The company also provides bespoke solutions for the maintenance, repair, or upgrade of embedded defense equipment. It offers services including custom engineering for required specifications, obsolescence treatment, and reverse engineering services for broken or worn-out electronic products.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | ET Industries |
25.0%
|
| 2 | SPINNER GmbH |
12.5%
|
| 3 | Krytar, Inc. |
12.5%
|
| 4 | Mini-Circuits |
12.5%
|
| 5 | Pasternack |
12.5%
|
| 6 | Neosid Pemetzrieder GmbH & Co. KG |
12.5%
|
| 7 | Formerly Advanced Technical Materials Inc. |
12.5%
|
Derivation Method
The ranking is calculated based on the click share within the directional coupler page as of December 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
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 50.0% |
|
China
|
2 | 20.0% |
|
Germany
|
2 | 20.0% |
|
France
|
1 | 10.0% |
