International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | March -2017
p-ISSN: 2395-0072
www.irjet.net
Design of Compact E-Shaped Slot Multiband Antenna Wireless Systems Disha Mahulia1, Sudesh Gupta2 1M
Tech Scholar, Department of Eleсtroniсs and Сommuniсation, TIT & Science, Bhopal Guide and Head, Department of Eleсtroniсs and Сommuniсation, TIT & Science, Bhopal
2Research
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Abstract - A Novel Design for E Slotted Antenna is
designed which resonates for 1.2, 2.5, 3.5 and 6.75 GHz frequncies application for Wireless Systems like WiFi/WLAN, WiMAX, LTE, ISM GNSS Applications with Total Bandwidth of 2990 MHz. The E-shaped slot structure has been etched in the patch, and the 50 microstrip line feed is etched with the ground on the same face of the substrate as CPW monopole. An additional circular patch attached to the ground on the reverse side of the antenna for multibandoperation. The antenna structure has been modeled and its performance has been evaluated using a FEM based electromagnetic simulator, Ansys HFSS results show that, the proposed antenna offers good return loss response (for S11 less than ¡10 dB) at the four bands. Key Words: CPW-fed Microstrip Antenna, Multiband Antenna, E Slotted Antenna Designing, Compact Antenna, circular ground antenna etc.
shaped slot with rounded corners and fed by CPW and microstrip line and circular ground have been presented..
2. ANTENNA DESIGN In general, the bandwidth of a microstrip patch antenna is not very wide because it has only one resonance mode. Thus, to design a wideband radiator, two or more resonant parts with each part operating at its own resonance is essential, and the overlapping of these multiple resonances mode may lead to multiband or Wideband operations. After the selection of three parameters based on application, i.e. frequency of operation, height of substrate and permittivity of dielectric material, next step is to calculate width and length of the patch. Step 1: Calculation of Width (W)
1. INTRODUCTION The application of the E-shaped structure in patch antenna design has been first presented in [1]; in an attempt to overcome the narrow band and the large size of the conventional microstrip patch antennas. Since then, this structure had attracted antenna designers in their efforts to produce antennas with reduced size and multiband performance for different applications. The conventional E-shaped patch antenna has been used to design wideband antennas. Various U ,L F-shaped patch antennas with tapered, corrugated, and trapezoidal slots have been reported in the literature [6-8]. Many variants of the Eshaped patch structure have been proposed to produce reduced size and wideband antennas [9-12]. Patch antennas with half E-shaped and folded E-shaped structures have been also reported [9, 10, 13-15]. Moreover, the E-shaped structures have been used together with other slot structures to produce antennas with enhanced bandwidths [15-17]. For dual band antenna applications, E-shaped patch structures have been successfully verified as reported in [17, 18].As a slot, the Eshaped structure has drawn less attention from antenna designers; to name a few [19, 20]. In [19], the E-shaped slot structure has been applied to build a complementary part of an multiband antenna to produce the 3 GHz bandnotch. In the other work [20], two printed wide-slot antennas constituting of both E-shaped patch and E© 2017, IRJET
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√
√
Impact Factor value: 5.181
|
1
where, is the free permeability, is the free space permittivity and is relative permittivity. Step 2: Calculation of Effective Dielectric Coefficient ( ) the effective dielectric constant is ⁄
2
Step 3: Calculation of Effective Length (Leff) The effective length is 3
√
Step 4: Calculation of Length Extension (ΔL) (
)
(
4
)
Step 5: Calculation of Length of Patch (L) The actual length of radiating patch is obtained by L=
5
Step 6: Calculation of Ground Dimensions (Lg, Wg) 6 Therefore, the geometry of the proposed E-shaped slot antenna structure is shown in Figure 1(a). The slot has ISO 9001:2008 Certified Journal
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