All Categories
History
This section provides an overview for bias-tees as well as their applications and principles. Also, please take a look at the list of 20 bias-tee manufacturers and their company rankings. Here are the top-ranked bias-tee companies as of December, 2024: 1.SHF Communication Technologies AG, 2.Raditek, 3.Castle Microwave Limited.
Table of Contents
A bias tee separates direct current (DC) and alternating current (AC) in electronic circuits.
It introduces DC power to components needing biasing while allowing AC signals to pass without interruption. The device ensures that DC and AC paths are isolated, preventing noise from the DC source from impacting the AC signal. This feature is crucial in applications where signal integrity is vital.
Bias-tees are essential in powering amplifiers and RF filters, and they play a significant role in testing and measurement scenarios across various electronic disciplines.
*Including some distributors, etc.
Sort by Features
Sort by Area
Raditek founded in San Jose, California, USA, in 1993, is a manufacturer of Microwave/Wireless Telecom components, modules, and systems. The company offers products including satcom and Wi-Fi systems, Isolators, cable assemblies, and oscillators. Its products are used in telecommunications, satellite communications, radar systems, and electronic warfare systems. The company serves the industries of aerospace and defense, It has partnered with the US Department of Defense and NASA. It also provides custom RF Test solutions to labs.
Fairview Microwave was established in 1992 in Lewisville, TX, and is a manufacturer of RF and microwave components for industrial automation, military defense, telecom-broadband, commercial electronics, and building automation industries. Its RF product catalog includes RF noise source generators, RF power dividers and tappers, RF coaxial surge protector lightning, RF connector dust caps, and RF power combiners. The company also designs bias tees, calibration kits, frequency synthesizers, impedance matching pads, and hybrid couplers. It provides cable phase matching, 3D CAD drawings, and RF cable design services.
RLC Electronics, founded in 1959 and located in Mt. Kisco, New York, is a designer and manufacturer of coaxial switches and transmission line components. The company offers a range of products that include attenuators, bias tees, couplers, detectors, and band-pass filters. These products find general use in industries and applications such as telecommunications, aerospace, defense, test and measurement, research, and broadcast. RLC Electronics' components are used for signal routing, power management, signal conditioning, and frequency filtering in RF and microwave systems, ensuring efficient performance in a range of electronic applications. The company also holds ISO-9002 certification.
ERAVANT, founded in 2011 and located in Torrance, California, is a designer and manufacturer of millimeter wave and sub-THz (18 to 330 GHz) components, subassemblies, and test equipment. The company offers a range of products that include adapters, amplifiers, antennas, attenuators, and cable assemblies. These components find use in telecommunications, aerospace and defense, research and development, automotive, and test and measurement sectors. ERAVANT's offerings play a crucial role in enabling high-frequency communication, precision measurements, and advanced millimeter wave technology in diverse fields. The company is also AS9100D-certified and ITAR-registered.
Spectrum Control serves several markets including the wireless communication, military communication, aerospace, and high temperature industrial markets. Among the individual components Spectrum Control manufactures and develops are EMI filters; subsystems for signal conditioning and RF distribution; components including power dividers, limiters, filters, amplifiers, diode drivers, and rotary joints; as well secure communications solutions and rugged devices.
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.
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.
MECA electronics, a designer and manufacturer of microwave accessory devices, based in Denville, United States, was established in 1961 and has served the RF/microwave firm with products covering up to 50 GHz. The company provides RF/microwave components including fixed attenuators, DC blocks, directional couplers, isolators, and circulators as well as power dividers and combiners that are used in many applications such as mobile radio, satellite communications, aviation, and air traffic communications. The company has distributors including Accu-TECH, TALLEY, and PRIMUS.
Atlantic Microwave, founded in 1989 and currently a subsidiary of ETL Systems Ltd., is a British manufacturer and supplier of radio frequency (RF) and microwave components and equipment located in Braintree, Essex. The company’s product portfolio covers high-frequency RF components, RF research and development tools, and RF testing and measurement equipment, along with custom-built RF test equipment, components, and waveguides. These products are utilized in various applications, including cryogenic temperature and quantum computing as well as RF signal testing. The company caters to industries like aerospace, satellite communications, government and defense, test and measurement, as well as wireless, radio links, and telecommunications.
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.
R&K, established in 1977 and located in Fuji City, Japan, is a manufacturer of amplifiers and RF/microwave components. The company’s product line includes board-band amplifiers, narrow-band amplifiers, couplers, frequency doublers, and variable attenuators. Their products are used in optimizing RF signal performance, enabling communication, precise signal manipulation, and enhanced functionality in RF-based systems. R&K's amplifiers and RF/microwave products cater to industries such as telecommunications, aerospace, defense, research, and electronic testing. The company is also ISO 9001 certified.
Castle Microwave Limited, founded in 1981 and based in Newbury, England, is an ISO 9001-certified supplier of RF and microwave components, systems, and subsystems. Its products include broadband antennas, coax switches, and vector network analyzers. It also supplies actuators, motors, and resolvers that can be used in extreme environments, ranging from vacuum to the outer space temperatures. The company also sells a range of RF and microwave cables for all applications and markets, including micro coax, RF, and telecom. The company provides several services, including network services like RF conditioning, custom manufacturing, and engineering.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | SHF Communication Technologies AG |
20.0%
|
| 2 | Raditek |
20.0%
|
| 3 | Castle Microwave Limited |
10.0%
|
| 4 | Fairview Microwave, Inc. |
10.0%
|
| 5 | MECA electronics |
10.0%
|
| 6 | Krytar, Inc. |
10.0%
|
| 7 | ERAVANT |
10.0%
|
| 8 | Spectrum Control |
10.0%
|
Derivation Method
The ranking is calculated based on the click share within the bias-tee 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
|
8 | 66.7% |
|
United Kingdom
|
2 | 16.7% |
|
China
|
1 | 8.3% |
|
Japan
|
1 | 8.3% |
