Howtosignalprocessing
Millimeter waves are electromagnetic (radio) waves typically defined to lie within the frequency range of 30–300 GHz. The microwave band is just below the millimeter-wave band and is typically defined to cover the 3–30-GHz range.
- What are the disadvantages of millimeter wave?
- Why is it called millimeter wave?
- What blocks millimeter waves?
- What is the frequency range of microwave?
What are the disadvantages of millimeter wave?
Disadvantages of Millimeter Wave
Higher costs in manufacturing of greater precision hardware due to components with smaller size. It may result in lower sensitivity in a receiving system due to the lesser energy collected by the smaller size antenna. At extremely high frequencies, there is significant attenuation.
Why is it called millimeter wave?
They are called millimeter waves because they vary in length from 1 to 10 mm, compared to the radio waves that serve today's smartphones, which measure tens of centimeters in length. Until now, only operators of satellites and radar systems used millimeter waves for real-world applications.
What blocks millimeter waves?
Millimeter waves propagate solely by line-of-sight paths. They are not reflected by the ionosphere nor do they travel along the Earth as ground waves as lower frequency radio waves do. At typical power densities they are blocked by building walls and suffer significant attenuation passing through foliage.
What is the frequency range of microwave?
Microwave frequencies range between 109 Hz (1 GHz) to 1000 GHz with respective wavelengths of 30 to 0.03 cm. Within this spectral domain are a number of communication systems applications that are important in both the military and civilian sectors.
