Transitions from Fundamental Rectangular Waveguide

Transitions from fundamental rectangular waveguide to corrugated waveguide are often required at the end of a low-loss corrugated waveguide transmission line. The transition then connects the transmission line to low-power instrumentation.
General Atomics supplies such transitions in three basic types:

1) mode converter/taper
2) corrugated horn/collimating lens
3) miter bend types

Mode converter/taper types have the highest output HE11 mode purity (typically >99%) and can have wide bandwidths, such as 110-140 GHz. Corrugated horn/collimating lens types typically have about 95% output HE11 mode purity and can operate over similar bandwidths. Miter bend types have about 90% output HE11 mode purity over very wide bandwidths, such as 50-100 GHz or 100-180 GHz.

WR6 to 63.5 mm horn/lens transition centered at 170 GHz.

WR6 to 63.5 mm horn/lens transition centered at 170 GHz.

Broadband miter bend transition from WR8 to 63.5 mm corrugated waveguide for 100 to 180 GHz.  This transition uses a special electroformed taper to provide good illumination for a curved mirror in miter bend housing.

Broadband miter bend transition from WR8 to 63.5 mm corrugated waveguide for 100 to 180 GHz. This transition uses a special electroformed taper to provide good illumination for a curved mirror in miter bend housing.

Contact

Ray O’Neill, GA-ITER Program
oneill@fusion.gat.com
(858) 909-5214

John Doane, GA-MFE Technologies
doane@fusion.gat.com
(301) 362-9097