What is a Waveguide Bend?

Waveguide bend is used to direct high frequency signals propagating through a waveguide in a specific direction. These bends allow the change in direction of a signal within a waveguide, with minimal loss, reflection and distortion of the electric and magnetic fields.

Unlike coaxial cables which can be bent on demand, waveguide structures are more rigid and require the use of bends to get the signal from one point to another.

Types of Waveguide bends:

Waveguide E bends - An E-bend changes or distorts the E-Field (Electric Field) of the propagating signal. In order to minimize reflections, the radius of the bend should be greater than two wavelengths of the signal.

Waveguide H bends - An H-bend changes or distorts the H-Field (Magnetic Field) of the propagating signal. In order to minimize reflections, the radius of the bend should be greater than two wavelengths of the signal.

The bend angle is usually 30 degrees, 45 degrees or 90 degrees, however this can be customized based on the requirement. When selecting the waveguide bend the waveguide size and the flange type need to be selected - these usually vary based on the frequency at which you are planning to use the specific waveguide bend.

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