Design of Spiral Antenna for Multiband Applications
J Lavanya1, S Nagakishore Bhavanam2, Vasujadevi Midasala3, M. Sekhar4

1J. Lavanya, PG Student, Department of ECE, Acharya Nagarjuna University, Guntur (Andhra Pradesh), India.
2Dr. S Nagakishore Bhavanam, Assistant Professor, Department of ECE, Acharya Nagarjuna University, Guntur (Andhra Pradesh), India.
3Vasujadevi Midasala, Assistant Professor, Department of ECE, Koneru Lakshmaiah Education Foudation, Vaddeswaram, Guntur (Andhra Pradesh), India.
4M. Sekhar, Assistant Professor, Department of ECE, Vignan’s Foundation for Science, Technology and Research, Guntur (Andhra Pradesh), India.
Manuscript received on 07 March 2019 | Revised Manuscript received on 20 March 2019 | Manuscript published on 30 March 2019 | PP: 1160-1163 | Volume-8 Issue-5, March 2019 | Retrieval Number: E3158038519/19©BEIESP
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Abstract: Present communication requires antennas with multiple band characteristics for supporting different wireless applications. The proposed antenna model is designed and simulated with the help of HFSS (High Frequency Structure Simulator) of 14.0 version. Microstrip antenna is designed by the Rogers/duroid 5880 ™ substrate with a dielectric constant (  r ) of 2.2 having 0.6mm thickness. The proposed design composed of octagonal spiral antenna with a feed width of 1 mm using the Microstrip feeding technique. The exhibited Return loss are -32.4dB, -13.3dB, -20.6dB,-15dB, -18.8dB, -12dB, -12.3dB, -13.3dB at the frequencies are 31.9GHz, 34.8GHz, 35.7GHz, 36.8GHz, 43GHz, 46.8GHz, 59.3GHz, 64.3GHz with VSWR (voltage standing wave ratio) between the acceptable range of 1 and 2. The observed results are applicable in Ka-band, Q-band, and U-band respectively.
Keyword: Octagonal Spiral Antenna, HFSS, VSWR, Return Loss.
Scope of the Article: Internet and Web Applications