Coupled Inductor L Source Inverter Design using Matlab Simulink

Description

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In this paper, the analysis has been carried out for semi-circular ring patch antenna is presented for wideband applications is presented. The semi-circular ring patch (semi-CRP) antenna is feed by asymmetric coplanar strip (ACS) feeding. The simulation of the proposed antenna has been considered the maximum return loss of -46.53dB at 7.3GHz with the wide impedance bandwidth of 58.24%. Semi-concentric rings helps the input impedance matching and half circle patch attached to rings improve the gain. The radiation patterns and 3dB axial bandwidth are presented in the results. The proposed antenna operates at wideband applications used in satellite downlink frequency with circular polarization.

INTRODUCTION

A circularly polarized (CP) antenna has more attention than linearly polarization (LP) antennas. CP has numerous applications in GPS, RFID, WLAN, and Wi-MAX. A CP antenna gives better performance than LP antennas, because avoid the mismatch of impedance, polarization, and multipath loss, etc. The monopole antenna have lot of advantages low profile, simple structure, low cost, ease of implementation and broadband operating bandwidths. To achieve wide bandwidth in broadband applications coplanar waveguide (CPW) fed is used. CPW line senses the spectrum from 2.58GHz to 14GHz easily enhance large bandwidth. CPW has low dispersion, simple realization due to etching on one side and easily reconfigurable. From ACS (Asymmetric coplanar strip) fed monopole antennas are perfectly used for communication applications because of wide bandwidth. The proposed antenna has semi-circular rings attached to the monopole, which extends resonating frequency and the space between the rings affects the impedance performance. The input impedance depends on the width of rings and also improves performance of ACS. Semi-circular rings are used to improve bandwidth. To enhance gain in used different techniques like arrays, EBG, FSS and short metallic patches are used. So half circle patch is added to semi-concentric rings. However, to enhance wide bandwidth in etches on ground plane with stubs and slots. The ACS feeding will achieve wideband width. The comparison is reported to achieve more impedance bandwidth in satellite application with ACS feed.

EXISTING SYSTEM

  • In this existing system proposed antenna is shown It consists of a = 0.02,dpatch on one side of a dielectric substrate (?r = 4.4, tan h = 6.4 mm), which has a ground plane on the other side. Wideband, Wider azimuth planes, circularly polarized antenna, Omni directional antenna. The CP and radiation characteristics of the antenna are analyzed. By introducing the curved branches at both the edges aof the patch and ground plane and making an angle of? between them, the omnidirectional CP fields in the wider ) planes can be obtained. Simulated and?- 130? = 50qazimuth ( measured results confirmed the design.

DISADVANTAGES

  • Approximate frequencies
  • It has low profile

PROPOSED SYSTEM

In this paper, a simple radiating structure of? circular rings structure with feed form small ground implemented on Fr4epoxy substrate. It achieves maximum return loss of -46.53dB at 7.3GHz operating frequency and Bandwidth of 58.24%, from 5.4GHz to 9.7GHz which is used in satellite applications.

ADVANTAGES

  • ACircularly Polarized Antenna With?Wide?Axial Ratio Beam width
  • Various frequency bands and showing the good return loss andradiation.

APPLICATIONS

  • WLANApplication
  • Wireless and telematic
  • Satellite Application

SOFTWARE REQUIRED

  • ANSYS HFSS v14

REFERENCE

[1] Kang Ding, Yong-Xin Guo and Cheng Gao, ?CPW-Fed wideband circularly polarized printed monopole antenna with open loop and asymmetric ground plane?, IEEE Antennas and Wireless Propagation Lett., vol. 16, pp.833-836, 2017.

[2] Rohit Kumar Saini, Santanu Dwari, and Mrinal Kanti Mandal, ?CPWFed dual-band dual-sense circularly polarized monopole antenna?, IEEE Antennas and Wireless Propagation Lett., vol. 16, pp. 2497-2500, 2017.

[3] Garg. R., Bhartia. P. BahlI &Ittipiboon A. ?Microstrip Antenna Design Handbook?, Artech House Norwood, 2001.

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