Indra Kumar Singh (1705267005)

In this work filtering antenna or filtenna has been designed successfully. filtering antenna
or filtenna is a combination of filter and an antenna to work as a single unit. The antenna
act as a last resonator for the integrated filter. This enhances the bandwidth of the antenna
and also the frequency selectivity improves.
First, the rectangular microstrip patch antenna that is fed with quarter-wave transformer is
designed for 2.45GHz frequency having bandwidth of around 58MHz. Antenna is designed
by designing formula and then studied the effect of changing length, width and substrate
material for both patch and ground plane.
second, the third order chebyshev hairpin filter (hairpin-line microstrip filter) is also
designed successfully and studies the effect of changing substrate material or dielectric
constant and various resonators dimensions in the designed filter. the designed filter have
gain of nearly -35dB and bandwidth of around 210MHz.
Finally, the filter and the patch is integrated to each other to built the first model of filtering
antenna design which is the basic target of this work. This model after doing modifications
and optimizing the result, the model reaches the target that increases the bandwidth of
about 172%.