SSRG International Journal of Electronics and Communication Engineering ( SSRG – IJECE ) – Volume 3 Issue 7 – July 2016 ISSN: 2348 – 8549 www.internationaljournalssrg.org Page 14 Design & Parameters Analysis of Microstrip Patch Antenna for Ultra wide band Application Ashish Chand 1 , Dinesh Kumar 2 M.Tech Scholar 1 , Assistant Professor 2 , Department of Electronics & Communication Career Point University, Hamirpur-176041 (H. P.), India. Abstract – Microstrip patch antennas being popular because of light weight, low volume, thin profile configuration which can be made conformal. This paper presents antenna designs for ultra wide band applications. UWB is a short distance radio communication technology that can perform high speed communications with speeds of more than 100Mbps. Modern communication system requires single antenna to cover several wireless bands. The UWB systems have received great attention in indoor and handheld wireless communication. The first is the design and parametric analysis of Inset fed rectangular micro-strip antenna which operates at the central frequency of 6.57GHz.The second aspect is the design and parametric analysis of slot cut E- shaped micro-strip antenna. The simulation process has been done through high frequency structure simulator (HFSS). The properties of antenna such as bandwidth, return loss, VSWR has been investigated and comparison between these two micro-strip antenna. The presented antenna simulated and various parameters such as return loss, VSWR, gain and radiation pattern has been investigated. Keywords -- HFSS(High frequency structured simulator), MPA(Micro-strip Patch Antenna), FEM(Finite Element Method) etc. I. INTRODUCTION Antenna "The eyes and ears in space" is experiencing a various changes from earlier long wire type for radio broadcast, communication links to the military applications, aircraft, radars, missiles, space applications in the second half of last century. This scenario is fast changing with the evolution of Cellular mobile personal communication in the form of Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Digital Communication System (DCS) 1800 systems, North American dual-mode cellular system Interim Standard (lS)-54, North American IS-95 system, and Japanese Personal Digital Cellular (PDC) system etc. Satellite communication and Wireless communication has been developed rapidly in the past decades and it has already a dramatic impact on human life. In the last few years, the development of wireless local area networks (WLAN) represented one of the principal interests in the information and communication field. Micro-strip patch antennas being popular because of light weight, low volume, thin profile configuration which can be made conformal. Wireless communication systems applications circular polarization antenna is placing vital role. In this study we introduce a new technique to produce circular polarization. Hybrid coupler is directly connected to micro-strip antenna to get circular polarization[11]. The common shapes of the micro-strip patch are rectangular, square, circular, triangular, etc. Fig 1 Micro-strip Patch Antenna The length of the connecting strip is maintained to be λ/4. However, the width of the strip is treated as a variable. The four strips are placed symmetrically at four points. Micro-strip feeding techniques is preferred in this design. The length of the feed is again considered to be multiples of λ/4 for proper impedance matching at the end. The patch antenna shape is etched from the double side printed dielectric substrate FR4-Epoxy with dielectric constant (Ԑr ) of 4.4. The backside of the substrate is used as the ground portion. The dimensions are determined based on selected resonant frequencies 6.57 and 9.5 GHz. A micro-strip patch antenna can be fed either by coaxial probe or by an inset micro-strip line. Coaxial probe feeding is sometimes advantageous for applications like active antennas, while micro-strip line feeding is suitable for developing high-gain micro-strip array antennas. In both cases, the probe position or the inset length determines the input impedance[10]. (1)