AT Microwave Straight Waveguide | WR-28 to WR-0.65

May 22, 2026

AT Microwave Straight Waveguide | WR-28 to WR-0.65

AT Microwave Straight Waveguides – available from bq-microwave

bq-microwave offers the AT-SSW standard straight waveguides from AT Microwave – precision-machined straight waveguide sections for demanding measurement and high-frequency applications. AT Microwave manufactures these straight waveguides across an exceptionally wide range: from WR-28 to WR-0.65, with frequency coverage up to 1700 GHz.

What sets the AT-SSW series apart

A straight waveguide is a straight waveguide section that connects two components with low loss or serves as a defined spacing element in a measurement setup. The AT-SSW series is designed for low insertion loss and good return loss, making it well suited to laboratory test benches and high-performance applications. Its rugged design also makes the waveguides suitable for harsh, continuous operation.

Example model AT-SSW-2.0-WR10 (Full W-Band)

  • Frequency range: 75 – 110 GHz (WR-10, Full W-Band)
  • Return Loss: −15 dB min., −20 dB typ.
  • Length: 2.0 inch (others: 1.0 / 1.25 / 4.0 inch)
  • Port 1 and Port 2 flanges: WR-10 UG-387/U-M with anti-cocking flange
  • Case material: copper, gold-plated

Portfolio range

  • Waveguide sizes from WR-28 to WR-0.65
  • Frequency coverage up to 1700 GHz
  • Available standard lengths: 1.0 / 1.25 / 2.0 / 4.0 inch
  • Custom lengths on request, up to 50 cm
  • Part number scheme: AT-SSW-XX-WRYY (XX = length, YY = waveguide port)

Typical applications

  • Laboratory test benches and test and measurement
  • Radar systems
  • High-performance RF applications
  • mmWave and sub-THz setups
  • Defined spacing sections in measurement chains

The AT-SSW series at a glance

With waveguide sizes from WR-28 to WR-0.65, the AT-SSW series covers the full spectrum from Ka-band well into the sub-THz range. The gold-plated copper construction and anti-cocking flanges ensure repeatable, low-loss connections – at short lead times. In addition to the standard lengths, custom lengths up to 50 cm are available on request.

Availability at bq-microwave

bq-microwave is a distributor for AT Microwave in Europe. The AT-SSW straight waveguides and further waveguide components are available at short notice in all standard sizes and lengths. For quotations and technical advice, contact us at info@bq-microwave.de or +49 151 252 901 28.

Product Data Sheet
Technical specifications as PDF
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