2 January 2020

Reduced size Antennas for Mobiles / Cellular System - Latest IEEE Project

Reduced size Antennas for Mobiles / Cellular System

Source: hello engineers blog
For a traditional antenna to work efficiently its size must be half of the free space wavelength so for 1Ghz the antenna must be 15 cms but apparently for microwaves and millimetre waves utilizing  more than or above 1Ghz can offer a reduction in the size of the material radiating. The same frequencies can also offer substantial bandwidth for the information-carrying signal. For example, if it is assumed that a radio transducer operates over a 10% bandwidth, a 100MHz BW for a 1GHz carrier frequency system is theoretically obtainable.

The design and usage of the wireless computers needs a specific frequency band available for it. Everybody knows that the Radio Frequency spectrum is not a free commodity and it’s being governed by specific bodies to avoid its interference by irresponsible users. The other reason is that particular frequency bands can be allocated to specific services. Due to the importance of some offered services, a given frequency band, treated as commodity, may be worth of billions of dollars when auctioned by a government to competing bidders (companies).