A Modified PEC-backed Spiral Antenna with Improved Pattern Symmetry

Authors

  • N. I. Sulong Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), 53100 Kuala Lumpur, Malaysia
  • S. Mohamad Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), 53100 Kuala Lumpur, Malaysia
  • M. R. Islam Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), 53100 Kuala Lumpur, Malaysia
  • N. F. Hasbullah Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), 53100 Kuala Lumpur, Malaysia

Keywords:

Archimedean spiral antennas, Frequency independent antennas, Pattern symmetry, PEC reflector, Spiral antennas, Ultra-Wide band (UWB),

Abstract

This paper discussed the pattern symmetry of a two-arm Archimedean spiral antenna which is designed to operate over the Ultra-Wide band (UWB) frequency range of 3.1 GHz to 10.6 GHz. The geometrical design of the spiral antenna is simulated and executed using CST Microwave Studio (CST MWS) software. The simulated radiation performances such as radiation pattern, maximum and minimum 3 dB beamwidth, current distribution and gain have been analyzed. The results are compared in three conditions; in free space (with no ground plane), above a solid PEC ground plane, and above a modified PEC ground plane (with circular patterns). Both the PEC reflectors are placed below the spiral antenna with a separation distance of λ/4 at lower frequency flow = 3.1 GHz, center frequency fcenter = 6.85 GHz, and higher frequency fhigh = 10.6 GHz of UWB. It is shown that the spiral antenna above the modified PEC backing provides an overall better performance, giving a unidirectional radiation pattern with high gain and improved pattern symmetry compared to the other two configurations.

Author Biographies

N. I. Sulong, Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), 53100 Kuala Lumpur, Malaysia

Department of Electrical and Computer Engineering

S. Mohamad, Kulliyyah of Engineering, International Islamic University Malaysia (IIUM), 53100 Kuala Lumpur, Malaysia

Assistant Professor
Department of Electrical and Computer Engineering

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Published

2017-09-29

How to Cite

Sulong, N. I., Mohamad, S., Islam, M. R., & Hasbullah, N. F. (2017). A Modified PEC-backed Spiral Antenna with Improved Pattern Symmetry. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 9(3), 33–36. Retrieved from https://jtec.utem.edu.my/jtec/article/view/1353

Issue

Vol. 9 No. 3: July - September 2017

Section

Articles

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