The term ‘microwaves’ is used for those wavelengths measured in centimetres roughly from 1 m. to cm or the bands of frequencies between 300 MHz to 300 GHz. Microwaves are most popularly used in point to point communication, TV broadcasting via satellites and in RADAR systems. Besides these, they are also being used in industrial, biomedical, chemical and in scientific research applications. The latest wide acceptance of the microwave application is as “microwave heating” in synthesizing various compounds (organic and inorganic) in research laboratories as well as in industries
