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sci.waveguide-cutoff-TE10 Calculator
Calculates waveguide cutoff frequency for the dominant TE10 mode: fc = c/(2a), and operating frequency range for single-mode propagation in a rectangular guide. WR-90 X-band waveguide (22.86 × 10.16 mm): fc = 6.56 GHz, usable range 8.2–12.4 GHz — below fc, the mode is evanescent and waves decay exponentially.
Inputs
A Mm
Reference formula or conversion factor shown for context.
B Mm
Reference formula or conversion factor shown for context.
Eps R
Reference formula or conversion factor shown for context.
Mode M
Reference formula or conversion factor shown for context.
Results
TE_m0 cutoff frequency fc (GHz)
Frequency at which output power drops to half (−3 dB). For a low-pass filter: signals below this pass; above this are attenuated. For RC circuits: Fc = 1/(2πRC).
cutoff wavelength λ_c (mm)
The computed linear length.
TE11 cutoff frequency (GHz)
Frequency at which output power drops to half (−3 dB). For a low-pass filter: signals below this pass; above this are attenuated. For RC circuits: Fc = 1/(2πRC).
fc = c/(2a√εr) for TE10
Reference formula or conversion factor shown for context.
WR-90 standard
Sample size or count used in the calculation.
single mode operation
The proportional relationship between two quantities.