Online ISSN: 2515-8260

Keywords : Return loss

Design and Implementation Of EBG Antenna Structure Using Aperture Coupled Feeding Technique For C- Band Applications

V. Ramkumar; T. Suresh; R. Surya; S. Rakesh; V. Praveen Kumar

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 2396-2402

In this paper it has been described that electromagnetic band gap (EBG) structure design is applied in the antenna structure in order to enhance the performance of the antenna especially for improving the gain and radiation pattern. Microstrip patch antenna is used due to the advantages such as unchallenging and economically viable fabrication, light weight, low profile and can easily integrated with microwave circuit. This project involves the study of simulation results and fabrication process of EBG structure in the microstrip patch antenna using aperture coupled feeding technique . The simulation is done by using microwave Studio suite CST. From the simulation process, the designed microstrip EBG antenna shows considerable enhancement in performance in terms of radiation pattern, gain and return loss, S11 and works in the frequency range of 5.4GHz to 6.9GHz. Improvement in the mutual coupling is also shown in the designed aperture coupled microstrip EBG antenna and thus makes it suitable for wide angle scanning active phased array antenna. Other than that, the EBG structure also can be applied as a band reject especially for ultra wide band application which operates at very wide frequency ranges. By using aperture coupled microstrip EBG antenna of this design the overall gain performance is improved.

Aperture Coupled Technique Using Triangular Shape Patch Antenna for Integration into Different Wearable Textile Substrates

V. Ramkumar; S. Mahaboob Basha; T. Suresh; A. Iyswariya; K. Jeevitha; V.Praveen kumar

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 1361-1369

The rapid development in wireless communication devices is increasing in day to day life, with the advancement of wearable antenna and electronics in civil, medical, sportswear and mainly in medical domains to replace wired communication systems in the near future in which antennas play an important goal. At present scenario, there is a greatest interest in antenna to merge between wearable systems. In this paper a different feeding technique called aperture coupled feeding technique has been implemented with three different substrates like cotton, jean and fleece fabric. The new coupling technique helps to improve the overall performance of textile antenna and among the three substrates cotton achieves maximum efficiency. The designed antenna operates in the frequency of 2.4 – 5.8 GHz of ISM band applications. From this analyzed result the textile antenna is highly efficient, fully flexible, can be easily wearable and it is easily integrated into garments

Conversion of RF waves into Electrical Energy

T.Blesslin Sheeba; Vishwa Mohan; Seenu Subramaniyan; Yuvaraj Narasimman; J. Yogapriya

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 2503-2508

Over the past one decade, there is a rapid growth in the development of wireless communication applications. The performance of all such systems completely depends on the design of the antenna. Microstrip antennas are preferred for most of their applications. A low profile microstrip antenna with stable radiation pattern in a relatively wide band is presented for 5G operation. This paper presents a dual band rectangular microstrip patch antenna. This antenna is designed over an operating frequency of 3.48GHz (5G band) and 6.12GHz using the substrate material FR-4 which has a dielectric constant of 4.3. The design antenna can be used for 5G applications such as enhanced Mobile Broadband (eMBB), Massive 00machine type communication (IoT), Ultra reliable low latency communication. The designed antenna has low profile, low cost, easy fabrication and good isolation. The proposed antenna is designed for the purpose of aeronautical radio navigation and mobile satellite communication. The return loss of the proposed antenna is -26.26dB with a good total efficiency of -3.85dB. A prototype of the antenna was fabricated and achieved a good directivity gain of 3.21dBi with a VSWR of 1.1 at the resonant frequency. Experimental validation of technique is carried out and measured results were found to be comparable -with simulated results.