IMPROVISATION OF THE MICROSTRIP SINGLE ELEMENT STEPPED FEED ANTENNA USING HALF AND FULL BOW-TIE SLOTTING/MEANDERING

1In this paper a single element antenna with stepped feed rectangular patch for Wireless LAN has been shown and relatively analyzed to be improved with new technologies of miniaturization. This microstrip antenna consists of single square patch element fabricated onto the FR4 substrate and the forward radiating part with a Nickel as a dielectric substrate. Previously after utilizing the stepped patch in feed end, filters were added to obtain high performance, but we noticed to make a good performance by utilizing our technique. There are many problems in case of designing of a microstrip antenna, but the main disadvantage was the s-parameter that was required for the bandwidth increment .The problem we managed to handle was alternative to the complex microstrip filter theory. An alternative achievement that was required to replace filters due to high system complexity was the Meandering of patch. A high frequency domain analysis was required for maintaining filter theory radically typical solving profiled systems .We managed to interfere the theory by virtually putting the concept of surface currents that are a mainly due to the discontinuities of the edged microstrip. Finally we analyzed the two bow tie structure and find it possible to increase the efficiency of s-parameter and Bandwidth. We observed the utility of the s parameter thus to increase the bandwidth. By raising s parameter to a very high level so that we can tradeoff it with the required BW of the microstrip antenna. We also varied the surface currents instantaneously to be proven high gain structure by using a stepped patch and varying its surface current by using Half bow-tie and Full Bow Tie shaped slotted structure to get a high reflection loss of –35 dB and –53 dB respectively that makes it a sensible design without changing the resonatic frequency .A polygonal cut is utilized for creating a shape of a Bow Tie. We managed a bandwidth of 1.2 GHz at 9.2 GHz. Finally CST Microwave studio electromagnetic tool is utilized for the antenna design.