Waveguide Cutoff Calculator
Calculate cutoff frequencies and mode characteristics for waveguides
About Waveguides
Waveguides are hollow metal structures that guide electromagnetic waves at microwave frequencies. They support different propagation modes with specific cutoff frequencies.
Key Formulas (Rectangular):
- fc = (c/2)√((m/a)² + (n/b)²)
- λg = λ0/√(1 - (fc/f)²)
- vp × vg = c²
Standard Waveguides:
- WR-90: 22.86 × 10.16 mm (8.2-12.4 GHz)
- WR-42: 10.67 × 4.32 mm (18-26.5 GHz)
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.