D band (waveguide)

The waveguide D band is the range of radio frequencies from 110 GHz to 170 GHz in the electromagnetic spectrum,^[1][2] corresponding to the recommended frequency band of operation of the WR6 and WR7 waveguides.^[3] These frequencies are equivalent to wavelengths between 2.7 mm and 1.8 mm. The D band is in the EHF range of the radio spectrum.

PCB D band waveguide

Waveguide D band

Frequency range	110–170 GHz
Wavelength range	2.73–1.76 mm
Related bands	mm (IEEE) EHF (ITU)