5 differences between rectangular and circular waveguide

Rectangular waveguides (e.g., WR-90) support ​​TE10 dominant mode​​ at ​​8.2–12.4GHz​​ with ​​0.1dB/m loss​​, while circular waveguides handle ​​TE11 mode​​ but suffer ​​higher attenuation (0.3dB/m)​​. Rectangular types offer ​​30% wider bandwidth​​, whereas circular variants enable ​​polarization rotation​​. Machining tolerances are stricter for circular guides (​​±0.0005″ vs. ±0.001″​​), and rectangular flanges ​​resist misalignment​​ better due to ​​keyed […]

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