Qualification: 
M.Tech, B-Tech
aiswaryas@am.amrita.edu

Aiswarya S. currently serves as a Research Trainee at the Amrita Center for Wireless Networks and Applications, Amrita Vishwa Vidyapeetham

Education

  • 2014 - 2016: M.Tech. (Wireless Networks and Applications)
    Amrita Vishwa Vidyapeetham, Amritapuri
  • 2010 - 2014: B.Tech. (Electronics and Communication Engineering)
    Valia Koonambaikulathamma College of Engineering and Technology, Thiruvananthapuram, Kerala
     

Publications

Publication Type: Conference Proceedings

Year of Publication Publication Type Title

2018

Conference Proceedings

Meenu L, S. Aiswarya, and Dr. Sreedevi K Menon, “Experimental Investigations on Monopole Loop Antenna with Dual Band Characteristics”, Wireless Communications, Signal Processing and Networking (WiSPNET), 2017 International Conference on. IEEE, Chennai, India, 2018.[Abstract]


A coplanar waveguide (CPW) fed rectangular loop antenna with dual frequency characteristics applicable Wi-Fi bands is presented. The studies to calculate the dependency of frequencies on the antenna structure is carried out using ANSYS HFSS. From this, the antenna is optimized to have an enhanced gain of ~ 8 dBi at 2.45 GHz and 3.83 dBi at 5.32 GHz. The radiation characteristics of the antenna are studied and the radiation pattern confirms the monopole characteristics at both the frequencies. The optimized antenna performance is confirmed by measurements using Vector Network Analyser. Since energized using coplanar waveguide the proposed antenna finds applications in Microwave Monolithic Integrated Circuits (MMIC) also.

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Publication Type: Conference Paper

Year of Publication Publication Type Title

2018

Conference Paper

Meenu L, S. Aiswarya, and Dr. Sreedevi K Menon, “Compact Monopole Antenna with Metamaterial ground plane”, in Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL), 2017, Singapore, 2018.[Abstract]


An antenna is an integral component in a wireless communication system. The choice of the antenna geometry of these systems depends on the preferred specifications. Depending upon the variation in the geometry and feeding technique, the performance of the antenna can be modified. For any communication system design an antenna with a better transmission range, improved reflection and radiation characteristics at the designed frequencies is desired. An asymmetric coplanar strip fed antenna is designed and analyzed in this paper. This structure gives better performance compared to microstrip and coplanar waveguide (CPW) fed omni-directional antennas. The proposed antenna is compact with reduced complexity, providing appreciable gain. A monopole antenna system with a metamaterial ground plane on the same plane is proposed. This antenna operates in the 2.45 GHz Wi-Fi band. The radiating element and the metamaterial ground plane are optimized for the best performance of the antenna system. For optimum performance of the antenna, open loop resonator is also studied as the ground plane. Miniaturization is achieved with metamaterial ground plane without changing the characteristic of the monopole antenna structure. The monopole antenna with the metamaterial ground plane is found to be compact with resonance at 2.45 GHz offering a 2 : 1 VSWR bandwidth of 217 MHz. The radiation pattern of the designed antenna is omni-directional with a gain of 3.124 dBi at the resonant frequency. The antenna is designed and optimized using ANSYS HFSS 14. The optimized antennas are fabricated using FR4 substrate and are experimentally validated using Vector Network Analyzer E5080A.

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2018

Conference Paper

Meenu L, S. Aiswarya, and Dr. Sreedevi K Menon, “Asymmetric coplanar waveguide fed monopole antenna with perturbed ground plane”, in 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), St. Petersburg, Russia, 2018.[Abstract]


Present work proposes an Asymmetric Coplanar (ACPW) fed antenna providing wide band and omnidirectional radiation. Gain enhancement is achieved by the introducing perturbations on the shorted ground plane. The proposed antenna offers a 2 :1 VSWR bandwidth of 741 MHz at 5.2 GHz with the enhanced gain of 6.4 dBi. The parametric analysis and optimization of the antenna is done by using ANSYS HFSS. Optimized prototype is analyzed experimentally using Keysight E5080A Vector Network Analyzer. The proposed antenna will have wide range of applications in different wireless communication systems

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