March 10, 2025

RF waveguide has seven major advantages: 1. Low loss (only 0.1dB/m at 10GHz); 2. High power capacity (supports 10kW continuous wave); 3. Anti-interference (metal enclosed structure); 4. Wide bandwidth (WR-90 covers 8.2-12.4GHz); 5. High temperature resistance (＞500℃); 6. High isolation (＞80dB); 7. Suitable for millimeter wave transmission, commonly used in radar feeders and satellite communication […]

To calculate a waveguide’s cutoff frequency (fc), first measure its width (a, typically 10-100mm for standard waveguides), then determine the mode (e.g., TE10 mode has n=1). Use the formula fc = c/(2a)√(1-(λ/2a)²), where c is light speed (3×10⁸ m/s). For rectangular waveguides, the dominant TE10 mode’s fc occurs when a = λ/2, with practical examples