Waveguide Calculator (Rectangular)

Pasternack's Waveguide Calculator provides the cutoff frequency, operating frequency range and closest waveguide size for a rectangular waveguide based on the custom inputted broad wall width.

Note: If you select a waveguide size from the dropdown below, the broad wall width will be automatically calculated along with the other results.

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Pasternack waveguides are structures for guiding electromagnetic waves, often called a waveguide transmission line. Our waveguides are low loss transmission lines capable of handling high power with high isolation. Waveguides are available in standard sizes from WR-430 through WR-15, which encompasses frequencies from 1.7 GHz to 75 GHz.

Available waveguide components include waveguide to coax adapters, waveguide horn antennas, waveguide terminations (loads), waveguide sections and bends, plus more. Visit Pasternack's Waveguides page for product details.