Antennas Used for Microwave Transmission
Antennas can be defined as a transducer between guided and unguided media. It transforms energy between free space and a guided media such as cable or waveguide.
Antennas can be divided further as :
- Parabolic Dish Antenna: They are used at the receiving end of the transmission link. They are parabolic in shape. They permit the greatest focus of energy possible in a single beam. Parabolic Antennas are highly directional.
- Horn Antenna: It is a radiating element in the shape of a horn with a stem. Its one end is flared out to improve the efficiency. Radiation is poor and non-directive.
Microwave Transmission
Microwave is a part of the electromagnetic Spectrum. Their frequency ranges from 300 MHz to 300 GHz, which corresponds to wavelengths of 1 mm to 30 cm. Sending and receiving information by microwaves is known as Microwave Transmission. Microwaves come under Unguided or wireless transmission media.
The repeaters form a network known as a microwave relay network. But these systems are used only in special roles as they are very expensive. These technologies such as wireless networks, and broadcast satellites broadcast television and radio directly into consumers’ houses. Microwaves can also be used for wireless power transmission.
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