FeaturesWaveguide Switch series 29337-2E designed and manufactured by Flann Microwave, Cornwall, UK. A global leader in precision passive rf, microwave and millimetric products.

  • Compact lightweight waveguide switch
  • Increased data capacity
  • Ultra-high RF & Mechanical performance
  • High power (peak & CW)
  • 24-500 GHz models available
  • Capability to integrate with other instruments in same topology as single-piece unit
  • Extended Frequency Range


Flann Microwave offers a comprehensive range of waveguide switches with high performance.

As such, we are proud to launch a new range of millimetric waveguide switches to suit the increasing demand for the next stage of 5G, 6G & LEO/MEO satellites and expanding use by Military & Astronomy over 28-500 GHz.


waveguide switch, compact h-plane data

The new 337 series is a range of small, compact, low mass, low inertia, low insertion loss, high power switch with higher isolation and minimal PIM.

One new feature is a simplified drive only requiring DC voltage with electronic sensors for tell-back.

Drive control can be customised to suit bespoke requirements.

H-plane structure allows easy integration with other components, giving the potential to create an entire switching network to include multiple switches, combiners, or filters/diplexers etc.

Rotor & stator are manufactured as single pieces with no contact or joining mechanisms, just two metal components with a sophisticated choked air gap.

The result is a very compact, very robust, perfect waveguide structure.



Model NumberWGWRStandard WG BandMean Power (W)Flange to Flange Dimension (mm)
Frequency (GHz)*Return Loss (dB)Insertion Loss (dB)Isolation (dB)
32337323217-330 17.5** 0.75** 75** 30**
*Extended frequency ranges available

** Pending confirmation


Custom Design

Custom built instruments can be supplied; please contact the sales team for more information sales@flann.com

Related Products

Series 330 – Waveguide Switch, Space Flight

Series 333 – Waveguide Switch

Series 334 – Waveguide Switch, DC Driven

Series 338 – Waveguide Switch, Power over Ethernet


The WG23-32 switch uses miniature flanges; however, they are offered with an optional set of very short flange adaptors to standard flange types.

The switch has H-plane ports as standard however they can be fitted with very short-stepped twists to convert to R-plane & standard flanges.

The standard control interface is lead tails. Other interfaces are available on request.


  • Drop-in availability
  • Integration with other components
  • Multiple or ganged versions
  • TVAC suitable option

Ordering Information

When ordering please specify the following:

WG designation

Model series (337)

Flange – See Flann.com




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