Frequency Reconfigurable Lungs-Shaped Microstrip Antenna Using Pin Diodes and Annular Ring
Ram Prasad Gundu1, P Pardha Saradhi2, B T P Madhav3, Badugu Prudhvi Nadh4

1Ram Prasad G, Department of Electronics and communication Engineering, KLEF, Green Fields, Vaddeswaram, India.
2P Pardha Saradhi P, Department of Electronics and communication Engineering, KLEF, Green Fields, Vaddeswaram, India..
3B T P Madhav, Department of Electronics and communication Engineering, KLEF, Green Fields, Vaddeswaram, India..
4Prudhvi Nadh B Department of Electronics and communication Engineering, KLEF, Green Fields, Vaddeswaram, India.
Manuscript received on 02 June 2019 | Revised Manuscript received on 10 June 2019 | Manuscript published on 30 June 2019 | PP: 181-184 | Volume-8 Issue-8, June 2019 | Retrieval Number: E6271038519/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This paper proposes a compact pattern and frequency reconfigurable circular microstrip patch antenna that uses PIN diodes for switching purpose. A total of six PIN diodes are used to electrically connect and disconnect a slotted annular ring to a circular slotted core patch for the purpose of increasing the effective radius of the whole patch thus shifting the resonant frequency. A Defected Ground Structure (DGS) is used to improve frequency bandwidth move the resonant frequency to a lower value. The applications in which this design can be used are in many fields of wireless communications. Ansys HFSS (High Frequency Structural Simulator) is used to design and analyze the results of this antenna.
Keyword: PIN diode, Reconfigurable antenna, (Defected grounded structure) DGS.
Scope of the Article: Microstrip Antenna Design and Application