Design of Miniaturized Dual-Band Microstrip Antenna for WLAN Application

Abstract

Abstract:Wireless local area network (WLAN) is a technology that combines computer network with wireless communication technology. The 2.4 GHz and 5 GHz frequency bands in the Industrial Scientific Medical (ISM) band can be used in the WLAN environment. Because of the development of wireless communication technology and the use of the frequency bands without the need for authorization, the application of WLAN is becoming more and more extensive. As the key part of the WLAN system, the antenna must also be adapted to the development of WLAN communication technology. This paper designs two new dual-frequency microstrip antennas with the use of electromagnetic simulation software-High Frequency Structure Simulator (HFSS). The two antennas adopt ordinary FR4 material as a dielectric substrate, with the advantages of low cost and small size. The first antenna adopts microstrip line feeding, and the antenna radiation patch is composed of a folded T-shaped radiating dipole which reduces the antenna size, and two symmetrical rectangular patches located on both sides of the T-shaped radiating patch. The second antenna is a microstrip patch antenna fed by coaxial line, and the size of the antenna is diminished by opening a stepped groove on the two edges of the patch and a folded slot inside the patch. Simulation experiments prove that the two designed antennas have a higher gain and a favourable transmission characteristic in the working frequency range, which is in accordance with the requirements of WLAN communication.

A miniaturized printed monopole antenna for 5.2-5.8 GHz WLAN applications

“…For the monopole antenna with a modified ground plane, the resonant frequency can be given by the following expression: …”

The Parametric Study and Fine-Tuning of Bow-Tie Slot Antenna with Loaded Stub

“…There are some publications that they mainly has studies the characteristics of dual- or multi-band microstrip antennas and experimentally described how satisfying are their performance [17]. In this paper, a printed Bow-Tie slot antenna fed by a coplanar waveguide and directly matched to the 50 Ω SMA connector for wide bandwidth applications has been presented and discussed.…”

“…Rapid developments of wireless communication technologies generally require two-way data communication in a fast, high-efficiency and reliable way, which is reflected in the antenna subsystem [17]. A dual band H-slot microstrip patch antenna is presented to cover two frequency bands of 3.6–3.7 GHz and 5.7–5.8 GHz [17].…”

“…A dual band H-slot microstrip patch antenna is presented to cover two frequency bands of 3.6–3.7 GHz and 5.7–5.8 GHz [17]. Another published work presented a low-profile, single layered rectangular microstrip antenna for 2.45 GHz and 4.96 GHz bands [18].…”

A Wideband Circularly Polarized Antenna with a Multiple-Circular-Sector Dielectric Resonator

“…Various types of antennas, such as microstrip patch antennas [3,4] and dielectric resonator antennas (DRAs) [5,6], have been investigated and developed for wireless communications. However, microstrip patch antennas (known as metallic-based antennas) usually have low radiation efficiency levels, owing to conductor loss.…”