What are RF directional couplers used for?

RF directional couplers are used for signal monitoring, power measurement, VSWR testing, and feedback control in RF and microwave systems.

Which industries use RF directional couplers?

They are widely used in telecom, defence, aerospace, broadcasting, satellite communication, and commercial RF applications.

What frequency ranges do Smartcom RF directional couplers support?

Smartcom RF directional couplers are designed to support a wide range of frequencies, depending on the application requirements, including high-frequency RF and microwave bands.

Can RF directional couplers be customized?

Yes, RF directional couplers can be customized based on frequency range, coupling factor, power handling, and connector type to meet specific system needs.

RF Directional Couplers

Q: What is an RF directional coupler?

An RF directional coupler is a passive RF component used to sample a specific portion of signal power from a transmission line without significantly disturbing the main signal.

Smartcom is a trusted Directional Couplers Manufacturer in Bangalore, specialising in high-performance RF directional couplers for precise signal monitoring, power measurement, and system protection in RF and microwave networks. Our directional couplers are engineered to deliver stable coupling, high directivity, and low insertion loss across wide frequency bands.

What is an RF Directional Coupler?

An RF directional coupler is a passive RF component that samples a defined portion of RF power flowing through a transmission line while maintaining isolation between forward and reflected signals. Directional couplers are essential for monitoring output power, detecting mismatches (VSWR), and protecting RF transmitters.

Smartcom offers:

Unidirectional RF directional couplers
Bi-directional and dual directional couplers
Broadband designs covering 100 MHz to 18 GHz

Key Features

Wide Frequency Range: 100 MHz to 18 GHz

Coupling Factor Options: 3 dB to 50 dB

High Directivity: Accurate forward and reflected power measurement

Low Insertion Loss & Stable VSWR

High Power Handling: Up to 250 Watts

Design Technologies Available:

LTCC-based low-power couplers
Transformer-based designs
MMIC directional couplers (on request)

Applications

Our RF directional couplers are deployed across:

Military and defence communication systems
Telecom base stations and RF infrastructure
Aerospace and satellite platforms
RF test and measurement equipment
Power monitoring, VSWR protection, and feedback circuits

RF Directional Coupler – Technical Overview

Unidirectional and Bi-Directional Couplers

Model Number	Frequency Range	Coupling Factor	Directivity	VSWR	Power Handling	Temperature Range
SCB-05/30-136174	136–174 MHz	5–30 dB	20 dB	1.3	200 W	−20 °C to +70 °C
SCB-10/30-5002500	500–2500 MHz	10–30 dB	18 dB	1.3	50 W	−40 °C to +85 °C
SCB-05/30-5003G	500–3000 MHz	5–30 dB	18 dB	1.3	250 W	−40 °C to +85 °C
SCB-05/30-6982700	698–2700 MHz	5–30 dB	18 dB	1.3	200 W	−20 °C to +70 °C
SCB-07/30-8002700	800–3500 MHz	7–30 dB	15 dB	1.5	200 W	−20 °C to +70 °C
SCB-06/30-2G8G	2–8 GHz	6–30 dB	18 dB	1.3	50 W	−40 °C to +85 °C
SCB-10/30-6G18G	6–18 GHz	10–30 dB	12 dB	1.5	50 W	−40 °C to +85 °C

Dual Directional Couplers

Model Number	Frequency Range	Coupling Factor	Directivity	VSWR	Power Handling	Temperature Range
SCD-07/10-8003500	800–3500 MHz	7–10 dB	15 dB	1.5	50 W	−20 °C to +70 °C
SCD-07/10-1G2G	1–2 GHz	7–20 dB	18 dB	1.5	100 W	−40 °C to +85 °C
SCD-10/50-3G4G	3–4 GHz	10–50 dB	10 dB	1.3	200 W	−40 °C to +85 °C
SCD-07/10-8006G	800–6000 MHz	10 dB	20 dB	1.5	50 W	−20 °C to +70 °C
SCD-10/30-3G6G	3–6 GHz	10–30 dB	18 dB	1.3	100 W	−40 °C to +85 °C

Engineering Reliable RF Monitoring

Smartcom combines in-house design and Indian manufacturing to deliver directional couplers that meet the accuracy standards of mission-critical RF and microwave networks.

Need a Custom Frequency Combination?

Our engineering team in Bangalore provides tailored designs for systems up to 40 GHz, based on specific requirements.