Investigation of Wide Band Modified Bowtie Antenna

The wide band width is one of the most demanding characteristic of patch antennas in the current advanced technology and research studies. Several studies on improving the bandwidth of patch antennas have been reported in the literature. Spiral patch antenna, fractal patch antenna and bowtie patch antenna are among the major configurations that are investigated primarily for improving the bandwidth of patch antennas. Bowtie patch antenna has the simplest layout that is used for its wide bandwidth and significant antenna for improving bandwidth and gain. Perfect Electric Conductor (PEC) with a Taconic TLY-5 as a substrate with 0.79 mm thickness are used in the simulations in this thesis. Three different modifications are used in the simulations to improve the bandwidth and gain of a simple 2x2 bowtie array. 1st modification which involves a slot with different lengths increase the bandwidth from 5.09 % to 8.62 % and gain from 13.4 dB to 13.7 dB. 2nd modification is applied to the feed network to make the antenna radiation symmetrical which increased the bandwidth from 5.09 % to 5.91 % but decreased the gain to 12 dB. 3rd modification involves a combination of the first two modifications that would make the antenna radiation symmetrical, increase bandwidth from 5.09 % to 9.51 % and increase the gain from 13.4 to 13.7 dB. The simulations cover the X-band region.