Abstract
This paper illustrates the design and development of the series-fed two-dipole-array antenna (STDA) for Wi-Fi applications. The proposed antenna consists of two dipole elements of different lengths, which are serially joined by the coplanar strip line. The design incorporates a coaxial/probe feeding technique with balun as an alternative feeding mechanism. The main goal of this paper was to create a high-gain antenna with an array configuration for Wi-Fi applications. For STDA array configurations, antenna performance parameters such as return loss, radiation pattern, gain, and directivity are investigated. It operates at 2.4 GHz and has a high gain of 21.6 dBi when used with a reflector. In order to improve overall gain, the STDA was analyzed for different array configurations in the formation of 1 × 4, 1 × 8, and 2 × 8 STDA arrays. The proposed antenna is made of a FR-4 substrate with a dielectric constant of 4.4 and a loss tangent (tan) of 0.007 and a thickness of 1.6 mm. An antenna measures approximately 105 mm × 80 mm in size. The proposed antenna meets the requirements for a 2.4-GHz antenna with a bandwidth of 200 MHz, and thus, it is found to be suitable for Wi-Fi applications.
Highlights
Various types of wireless communications antennas have been widely used in recent years, because high data rate services are most required [1]
The proposed antenna consists of two dipole elements of different lengths, which are serially joined by the Coplanar Strip Line (CPS)
The series-fed two dipoles array antenna which consists of two dipoles with different lengths and truncated ground plane which are further connected in series through a parallel strip line, which is chosen from different types of broadband antennas[2]
Summary
Various types of wireless communications antennas have been widely used in recent years, because high data rate services are most required [1]. The series-fed two dipoles array antenna which consists of two dipoles with different lengths and truncated ground plane which are further connected in series through a parallel strip line, which is chosen from different types of broadband antennas[2]. This kind of antenna is used in mobile communication in a wide range of applications such as base station antennas, phased array antennas, printed dipole with an integrated balun, a printed dipole pair, a double dipole antenna, a planar, almost yagi, a two layer, printed dipole and a trapezoidal dipole antenna due to their balanced gain of the wide bandwidth. In most cases the antenna size is very difficult to reduce because an antenna size often requires total control over the performance of wireless devices [3]
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