Microwave is a electromagnetic wave operating in a frequency range of 300 MHz to 300 GHz, with corresponding wavelength of 1 mm to 30 cm respectively. The radio frequency (RF) and microwave engineering encompasses the behavior of alternating current signals in the frequency range of 100 MHz to 1000 GHz. Signals with a wavelength of 1mm is refered to as millimeter waves. The word micro in microwave means very tiny and has no relation to the measurement factor micro. The NASA electromagnetic spectrum image shows the wavelength, frequency, and the energy range.

   Microwaves are used in radar devices, telecommunication, radio astronomy, automotive, GPS, SATCom, household cooking microwave ovens and so on. The microwaves that can pass through clouds are used in weather satellites. 		           NASA Electromagnetic Spectrum
 
 
The details of microwave and radar band designated by IEEE and NATO as L, S, C, X, K, Ku, Ka, Q, U, V, W, F and D is shown in [1].
 
1. Microwave Band


  Last Revised on: November 17th, 2022