Compact dual-band antenna for WLAN applications

Abstract

A novel and compact dual band planar antenna for 2.4/5.2/5.8-GHz wireless local area network(WLAN) applications is proposed and studied in this paper. The antenna comprises of a T-shaped and a F-shaped element to generate two resonant modes for dual band operation. The two elements can independently control the operating frequencies of the two excited resonant modes. The T-element which is fed directly by a 50 Ω microstrip line generates a frequency band at around 5.2 GHz and the antenna parameters can be adjusted to generate a frequency band at 5.8 GHz as well, thus covering the two higher bands of WLAN systems individually. By couple-feeding the F-element through the T-element, a frequency band can be generated at 2.4 GHz to cover the lower band of WLAN system. Hence, the two elements together are very compact with a total area of only 11×6.5 mm 2 . A thorough parametric study of key dimensions in the design has been performed and the results obtained have been used to present a generalized design approach. Plots of the return loss and radiation pattern have been given and discussed in detail to show that the design is a very promising candidate for WLAN applications.

uScope

“…The dual band radio card has 4 external antennas providing antenna gains of 2.52 dBi in the 2.4 GHz band and 3.81 dBi in the 5 GHz band. Antennas with such gains are typically needed for WLAN operations [10][11][12][13][14]. The AP is IEEE 802.11ac compliant and supports up to 3 simultaneous spatial streams and up to 160 MHz bandwidth.…”

Narrow and wide band monopole antenna design using heterogeneous bidirectional recurrent neural network for LTE and UWB applications

“…The antenna size is decreased in comparison with the traditional antenna. A new frequency reconfigurable, hexagonal slot on square‐shaped MPA is presented by Nayak et al 6 By applying the proper biasing voltage for the diode, the varactor diodes are positioned to achieve the broad tuning of two resonant frequency ranges in the slot 7,8 . The important points are that the radiation pattern remains constant with frequency tuning and that the matching network is not necessary for the design.…”

“…The important points are that the radiation pattern remains constant with frequency tuning and that the matching network is not necessary for the design. The dimension is highly decreased, but biasing circuitry design is complicated 6 . Even though varactor diode contains several advantages, PIN diode is better suited for investigation works because they are inexpensive, light weight, and simple to make.…”

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“…Some major requirements of IoT applications are to maintain a good quality of signal, device compatibility, multifunctionality, and reliability. WLAN is the wireless solution which enables flexibility and user mobility [10]. WLAN is also one among the most common communication technology which is profoundly applied in IoT applications.…”