The wide band antenna is an antenna who can operate in a large bandwidth, how much bandwidth start ?
Generally wideband antennas defined as having 500 MHz or more perating bandwidth.
Hi, Mahfoudi.
Please see the flowing like:-
http://www.antenna-theory.com/definitions/fractionalBW.php
FBW = 20% or 500 MHz, the talk of srinivas was true.
With my best regards.
Hi
See it is quite a relative term,
Like obtaining 500 MHz bandwidth with center frequency of 1 GHz is extremely tough while obtaining 500 MHz at 10 GHz is quite easy. So, you must find fractional bandwidth (bandwidth/center frequency) and if it is greater than 15-20%, then you can call it as wideband. For ultra-wideband, an antenna must cover a frequency range of 3.1-10.3 GHz.
Regards
Sameer
As a rule of thumb more than about 20 per cent of centre frequency either side band width is considered a wide band
If the BW is greater than 20% , it consider as a wideband antenna.
Hello,
Can any body attach a reference file for the definition of widebande antenna and ultra-wideband.
T
See Balanis's Antenna Theory book, 4th ed., for a short discussion on the subject, pages 65-66. You will find 10:1 and 2:1 as references, depending on the scenario in hands.
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