WR3 Waveguide Dual Coupler 220-330 GHz

WR3 Dual Coupler 220-330 GHz, 10dB Coupling, www.bq-microwave.de

WR3 Waveguide Dual Directional Coupler 220–330 GHz – Full J-Band (AT-DC10-03V)

What Is a WR3 Dual Directional Coupler?

A WR3 waveguide dual directional coupler is a four-port passive component used to simultaneously sample both the forward and reflected signal power within a waveguide transmission line. Operating in the full J-Band from 220 to 330 GHz, the AT Microwave AT-DC10-03V is designed for applications where precise power monitoring, signal splitting or directional measurement is required at millimeter-wave and sub-THz frequencies.

Unlike single directional couplers, a dual directional coupler provides two coupled ports – one for the incident wave and one for the reflected wave – making it particularly valuable in calibration setups, network analyzers, and power monitoring systems.

AT-DC10-03V – Technical Specifications at a Glance

The AT-DC10-03V from AT Microwave delivers broadband, high-precision performance across the entire WR3 waveguide band

Frequency Range: 220 – 330 GHz
Coupling: 10 dB
Insertion Loss: typ. –2.5 dB / max. –3.5 dB
Directivity: typ. 20 dB
Return Loss: –15 dB
Coupling Variation: ±2.0 dB
Coupling Accuracy: ±2.5 dB
Storage Temperature: –55°C to +125°C
Operating Temperature: –40°C to +85°C
Waveguide Interface: WR-3.4 / UG-387/U-M Anti-Cocking Flange
Case Material: Brass
Finish: Gold-plated
Weight: approx. 100 g
Model: AT-DC10-03V

The gold-plated brass housing ensures excellent conductivity, long-term reliability and consistent performance even under demanding environmental conditions.

Key Features of the WR3 Dual Directional Coupler

Full J-Band coverage from 220 to 330 GHz – no need for multiple components across the band
High directivity of typ. 20 dB – enables accurate separation of incident and reflected signals
Low insertion loss of typ. –2.5 dB – minimizes signal degradation in the main transmission path
Excellent coupling accuracy of ±2.5 dB – critical for calibration and power measurement applications
Good return loss of –15 dB – ensures minimal reflections back into the system
WR-3.4 waveguide ports with UG-387/U-M Anti-Cocking flanges – industry-standard interface for easy integration
Gold-plated brass housing – superior signal integrity and corrosion resistance

Applications: Where Is a WR3 Dual Directional Coupler Used?

The AT-DC10-03V is designed for demanding high-frequency environments across a wide range of industries and research fields:

5G Communication Systems As 5G and next-generation wireless networks push into millimeter-wave frequencies, WR3 directional couplers are essential for signal monitoring, power leveling and network testing at 220–330 GHz.

Test & Measurement Equipment Used in vector network analyzers (VNAs), scalar network analyzers, and power measurement systems. The high directivity and accurate coupling factor of the AT-DC10-03V make it ideal for precision measurement setups in R&D and production testing.

RF Over Fiber (ROF) Systems In RF-over-fiber systems operating at mm-wave frequencies, directional couplers are used for signal tapping and monitoring without disrupting the main signal path.

Radar Systems High-frequency radar systems operating in the J-Band benefit from the low insertion loss and broadband performance of this coupler, enabling compact and efficient transmit/receive front-end architectures.

Millimeter-Wave & THz Research Researchers working in spectroscopy, material analysis, imaging and terahertz science rely on precision mm-wave components like the AT-DC10-03V for reproducible and accurate measurements.

Satellite & Communication Links For satellite payloads and high-frequency communication links, this coupler provides reliable power monitoring and signal routing in compact waveguide assemblies.

Complete Waveguide Coupler Portfolio from bq-microwave

bq-microwave distributes the full AT Microwave coupler portfolio across Europe. Whether you need a standard product or a custom solution, we cover a wide frequency range:

Waveguide Dual Directional Couplers: WR19 to WR3 – covering 40 GHz to 330 GHz

Waveguide Couplers: WR22 to WR2.2 – covering 33 GHz to 500 GHz

This makes bq-microwave your single-source European supplier for broadband waveguide directional couplers from V-Band all the way up into the THz range.

Why AT Microwave & bq-microwave?

AT Microwave (Shanghai AT Microwave Limited) is one of the world’s leading manufacturers of precision millimeter-wave and THz waveguide components. Their products are built on state-of-the-art CNC machining with tight tolerances and outstanding gold plating quality – ensuring consistent, repeatable performance from prototype quantities through to full production.

bq-microwave is the authorized European distributor for AT Microwave, serving customers in Germany, Sweden, Denmark, Finland, the Netherlands, Poland, Czech Republic, France, Spain, Portugal and beyond. We offer:

Fast delivery from stock and short lead times
Competitive European pricing with no hidden import costs
Direct technical support from an experienced RF specialist
Custom solutions and modifications available on request

Download the Datasheet

Click below to download the full product datasheet for the WR3 Waveguide Dual Directional Coupler (AT-DC10-03V) including all RF specifications, mechanical drawings and dimensional data.

Download PDF Datasheet – WR3 Dual Directional Coupler 220–330 GHz