Design, Simulation & Fabrication of Multiband Octagonal Patch Antenna
D. Sharmila1, M. Purnachandra Rao2, P. S. V. Subbarao3, S Nagakishore Bhavanam4
1Smt. D. Sharmila, Research Scholar, Department of Electronics and Instrumentation Technology, Andhra University, Guest Faculty, Acharya Nagarjuna University Guntur, India.
2Dr. M. Purnachandra Rao, Professor, Department of System design, Andhra University, Visakhapatnam, India.
3Dr. P. S. V. Subbarao, Assistant Professor, Department of Physics, Andhra University, Visakhapatnam, India.
4Dr. S Nagakishore Bhavanam, Assistant Professor, Department of ECE, Acharya Nagarjuna University Guntur, India.
Manuscript received on 12 December 2018 | Revised Manuscript received on 23 December 2018 | Manuscript published on 30 December 2018 | PP: 51-55 | Volume-8 Issue-2, December 2018 | Retrieval Number: B2549128218/18©BEIESP
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Abstract: Due to rapid improvement in population multi band antenna are required because of a single antenna can work for multiple applications and antenna should behave as a versatile. In this paper a new model of multiband octagonal patch antenna is developed. The main advantages of multi band antennas are its reduced size and for multiband operation. The proposed multiband octagonal patch antenna can be operated in six different frequencies and 5 frequency bands. The developed antenna is applicable to C, Ku, K, Q and U-bands transmission. The proposed antenna has been designed, simulated by using HFSS (High Frequency Structural Simulator) software 15.0 and Fabricated, analyzed by combinational Analyzer. The simulated return losses obtained are -12.2dB, -14.0dB, -17.4dB, -17.8dB, -20.5dB and -10.9dB at 7.6GHz, 12.0GHz, 24.5GHz, 37.7GHz, 43.2GHz and 47.9GHz respectively and obtained VSWR (Voltage Standing Wave Ratio) values are 1.6, 1.4, 1.3, 1.2, 1.1 and 1.7. The measured (fabricated) return losses obtained are -11.9dB, -13.9dB, -17.1dB, -17.5dB, -20.1dB and -10.6dB at 7.6GHz, 12.0GHz, 24.5GHz, 37.7GHz, 43.2GHz and 47.9GHz respectively and obtained VSWR (Voltage Standing Wave Ratio) values are 1.5, 1.4, 1.2, 1.1, 1.1 and 1.6. The obtained VSWR values are ˂2 (ideal case is 1). It is observed that good agreement between measured (fabricated) and simulated results. The measured results are analyzed by combinational analyzer. The proposed antenna is capable of handling C, Ku, K, Q and U-band applications in an efficient manner.
Keyword: Octagonal patch antenna, C-band, Ku-band, K-band, Q-band, U-band, HFSS, Return loss, VSWR.
Scope of the Article: Design and Diagnosis