RF & Microwaves
Components and systems for RF and microwave technologies, antennas and high-frequency signals.
RF (radio frequency) and microwave technologies are used in systems where stable signal transmission, low signal attenuation and carefully controlled impedance are essential. These technologies can be found in everything from telecommunications and wireless networks to radar, automotive systems, medical technology and defence applications. At Swelex you will find a complete range of RF and microwave components, cabling, antenna solutions and customised systems with a focus on performance, reliability and ease of integration.
RF connectors & adapters
Reliable connections for RF and microwave systems. Ensures correct impedance, low loss and stable performance at high frequencies.
- Wide range
- Adapters for flexible system integration.
- Optimised for low VSWR and minimal damping.
- Suitable for test, communication and industrial applications.
RF & coaxial cabling
Cabling for safe and efficient transmission of RF and microwave signals between components, modules and antennas. Available as standard or customised solutions.
- Flexible and low-loss coaxial cables.
- Pre-assembled cable sets with RF connectors.
- Customised lengths, connectors and cable types
- For laboratories, system integration and field installation
Microwave components & filters
Components for signal processing, selectivity and interference cancellation in RF and microwave systems. Used to ensure stable and clean signal transmission.
- RF and microwave filters for different frequency bands.
- Suppression of unwanted signals and interference.
- Components for communication, radar and measurement equipment.
- High performance for demanding applications.
High power & TX/RX switches
Switches for handling high power and switching between transmit and receive in RF systems.
- TX/RX switches for radio systems and radar
- Handles high power levels and fast switching
- Reliable signal switching with low loss
- For defence, communications and industrial systems
Antennas & feed solutions
Antennas and associated feed solutions for the efficient transmission and reception of RF and microwave signals in various environments.
- Antennas for different frequency ranges and applications.
- Feed solutions for optimal signal transmission.
- Adapted for both fixed installations and mobile systems.
- For communications, IoT, industry and defence.
RF absorber materials & protection
Materials and solutions to absorb RF and microwave energy, reduce reflections and protect sensitive electronics.
- RF absorber material for EMI and EMC control.
- Reduces reflections and interference.
- Protection for test environments, enclosures and systems.
- Used in laboratories, measurement environments and advanced RF installations.
Concepts and context
RF (Radio Frequency)
Electrical signals in the frequency range MHz to GHz used for wireless communication and transmission.
Microwaves
Higher frequencies in the RF range (GHz level) allowing high bandwidth, compact design and directional signal transmission.
Impedance
The resistance to alternating current in a circuit, combined with reactance. Proper impedance matching reduces reflections and signal losses.
Attenuation (Attenuation)
Measures how much the signal strength decreases during transmission. Low attenuation is essential for long-distance transmission and high signal quality.
Signal integrity
How well the signal maintains its shape and strength during transmission, without interference, reflections or noise.
VSWR (Voltage Standing Wave Ratio)
A measure of reflections in RF lines; low values mean better matching and minimal signal loss.
TX/RX switches
Components that switch between transmitter and receiver in the same system, to optimise performance and protect receiver circuits.
Filter
Electronic components that selectively pass certain frequencies and block others, to reduce interference and isolate desired signals.
Antennas
Converts electrical signals into electromagnetic waves (and vice versa) and controls the direction and range of signal transmission.
RF-absorbing materials
Materials that reduce reflections, interference and EMI (electromagnetic interference) in high-frequency systems.
Areas of use
RF and microwave technologies are used in applications where performance and reliability are critical:
- Telecommunications and 4G/5G networks
- Radar and sensor applications
- Automotive and aeronautical electronics
- Medical diagnostics and therapy equipment
- Industrial wireless automation
- Defence and security systems
FAQ - Frequently asked questions
What is the difference between RF and microwaves?
- RF covers the whole radio frequency range (kHz to GHz), while microwaves usually refer to frequencies above about 1 GHz. Microwaves are often used when high bandwidth and directional signal is needed.
Why is impedance important in RF systems?
- Wrong impedance leads to reflections and signal losses, which can affect the performance, range and reliability of the system.
Can you combine different RF components from different suppliers?
- Yes, but it is important to check impedance, contact types and signal levels to ensure compatibility and maintain signal integrity.
How to reduce electromagnetic interference in RF systems?
- Through RF absorber materials, shielding, proper cabling and filtering, interference can be reduced and the signal improved.
Kinsun Industries Inc. was founded in Taiwan in 1986 and is a manufacturer of antennas and precision connectors. Kinsun continuously strives to take technology to a higher level. Headquartered in Taiwan, Kinsun has three additional factories in China, ensuring productivity - without compromising quality.
Smiths Interconnect, part of Smiths Group, is a leading supplier of electronic components, subsystems, microwave and RF products. The company delivers advanced solutions for critical applications in aerospace, defence, space, rail, medical and telecommunications, with a focus on reliability, security and high performance.
Corry Micronics has over 50 years of experience in RF and microwave solutions for defence, aerospace, medical and industrial markets. The company offers filters, amplifiers, switches and other RF components, both standard and customised, with a focus on technical expertise and reliable delivery.