Design and Development of Compact and Broadband Coaxially Fed Dipole Antenna Covering 500MHz to 2500MHz

D  Sharal; I  Hemalatha  and K H  Takeshore

doi:10.17485/ijst/2016/v9iS1/107897

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Design and Development of Compact and Broadband Coaxially Fed Dipole Antenna Covering 500MHz to 2500MHz

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2016/v9iS1/107897

Year: 2016, Volume: 9, Issue: Special Issue 1, Pages: 1-6

Original Article

Design and Development of Compact and Broadband Coaxially Fed Dipole Antenna Covering 500MHz to 2500MHz

D. Sharal¹ , I. Hemalatha¹ and K.H. Takeshore²

¹ Department of Electronics and Communication Engineering, Sir C. R. Reddy College of Engineering, Eluru − 534007, West Godavari District, Andhra Pradesh, India; [email protected]
² Defence Electronics Research Laboratories, Hyderabad − 500 005, India; [email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

In this paper a novel technique to enhance the bandwidth of 5:1 operating from 500MHz to 2500MHz for coaxially fed dipole antenna is presented with simulated and measured results. In modern scenario, Broadband Omni directional antennas are the preferred antennas for Electronic Warfare (EW) applications. Most of the communications especially for monitoring applications are carried out in HF, VHF and UHF bands. The antenna size reduction is achieved by shaping the antenna in a unique way without employing any matching circuits. The proposed antenna is well matched with VSWR ≤ 3:1 over the frequency band. Finally the antenna is optimized using CST Microwave StudioTM EM simulation software then practically implemented and evaluated for its characteristics. As the proposed antenna incorporates no matching and tuning networks, it can handle high power and is suited for Trans-Receive applications in communication.
Keywords: Broadband Antenna, Coaxial Feed Dipole, Compact Antenna