Design of reconfigurable multiband microstrip patch antenna

Abstract

In this present work annular microstrip
patch antenna has been created having a rectangular
patch and its simulation has been done. The substrate
used is FR4 having dielectric constant of 4.4.The
proposed work deals with the design of an antenna
which can used for many application by configuring the
design.The antenna can be used for various combination
of wireless applications such as S,C,X frequency band in
electromagnetic spectrum ,hence overcomes the
disadvantage of Narrow Bandwidth of Microstrip patch
Antenna. Now a days different antenna are preferred for
different application. The size of the device is the
important factor of consideration. The proposed
technique is to make use of the frequency spectrum
resources and work collectively well along with the
current and future generation wireless device.In this
work rectangular patch is designed with T shaped slots a
Ansoft HFSS software and pin diode is used for
reconfiguration. i.e. to select different frequency band
depending upon the application needed. The slotted
rectangular patch antenna is fed by a coaxial feedline
matched with 50ohm impedance .Frquency diversity has
been achieved by reconfiguration technique The main
advantage of the design is compact in nature, portable
and easy to fabricate.