Аннотация
Electrically controlled frequency reconfigurable
comb type antenna is presented in this paper. Reconfigurability
is achieved by placing a PIN diode in each slot of the comb
type antenna. The proposed antenna has very compact size
and works on 8 different bands depending upon the state and
number of PIN diode (ON/OFF). Ansoft Designer 7 is used to
simulate the equivalent model for the PIN diode and proposed
antenna is fabricated on FR4 substrate using photolithography
process. As the antenna reconfigure its resonating frequency
from 1st band to 8th band, directivity increases from 3.28 to 4.02
and radiation efficiency increases from 75.3% to 93.45% due
to the improvement in impedance matching at higher band.
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