Rigid vs Flexible Waveguides

In microwave engineering, waveguides are transmission lines used to guide electromagnetic waves at specific frequencies. Waveguides are also referred to as a transmission line. In the case of Microwave Techniques, two types of rectangular transmission line are manufactured: rectangular rigid waveguide and rectangular flexible waveguide. The latter of which is also known by its portmanteau of “flexguide.” In determining when to utilize rigid or flexible waveguide, several factors are relevant. Application, RF power level, frequency, material cost, mechanical advantages, system interface design and assembly orientation all play a role in selection.

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