Abstract
Recently, microstrip antennas are preferred in all areas of wireless communication, due to their advantages such as low volume coverage, light weight, surface compatibility, high cost requirements and easy production etc. The main disadvantage of these antennas is their narrow band performance (~11%). In the literature, there are some wideband microstrip antenna designs. These broadband characteristics are obtained by changing the antenna geometry or by adding new parasitic patches to the antenna elements. In this study, a classical wideband microstrip dipole antenna (MDA) design which can be used in WLAN/WiMAX applications (covering the bands 2.4–2.5 GHz and 2.5–3.5 GHz) is introduced. The proposed antenna has a pair of twisted strip which are placed asymmetrically near the feed of the dipole element with a length of 52 mm (~λ/2). Also a pair of square loop elements is placed on a sublayer. The proposed MDA has a resonance between 2.06-3.72 GHz with a bandwidth of 57%. The antenna has a directive radiation pattern with a gain of 6.49-3.98 dBi.
Highlights
Microstrip antennas (MAs) are used frequently in wireless communication systems as they have many advantages such as low volume, low cost, lightweight and easy to manufacture
Multi-band characteristics can be obtained from these antennas, while linear or circular polarized radiation characteristics can be obtained by small changes on the antenna design. [1]
It is seen that the broadband limit, which is accepted as 20% and 25% according to Defense Advanced Research Project Agency (DARPA) and Federal Communication Commission (FCC) respectively can be overcome for microstrip antennas [4]
Summary
Microstrip antennas (MAs) are used frequently in wireless communication systems as they have many advantages such as low volume, low cost, lightweight and easy to manufacture. It is seen that the broadband limit, which is accepted as 20% and 25% according to Defense Advanced Research Project Agency (DARPA) and Federal Communication Commission (FCC) respectively can be overcome for microstrip antennas [4] When these studies in the literature are examined, it is seen that conventional MDAs are not preferred for these applications. In these studies, it was observed that the wide band antenna performance could be achieved by the addition of different loadings [5, 6] to the dipole elements and the use of curved structures in the antenna design [7]. Note that this paper is an extended version of [8], which was previously presented at the URSI-Türkiye’2018 conference
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