A Miniaturization of Microstrip Antenna Using Negative Permitivity Metamaterial Based on CSRR-Loaded Groundfor Wlan Applications

Abstract

A microstrip antenna using negative permittivity metamaterial based on complementary split ring resonator (CSRR)-loaded ground has been investigated in order to miniaturize the size and improve the antenna characteristics. The antennas are designed on FR4 material and simulated results are provided by HFSS software. The metamaterial antenna is reduced 77 % the antenna size compared to the normal microstrip antenna. Furthermore, compared with the normal microstrip antenna, the antenna characteristics of the metamaterial antenna are improved significantly. The proposed metamaterial antenna achieves the antenna resonate at 2.45 GHz, the gain of higher than 6.5 dB and the bandwidth of 110 MHz through the whole WLAN band. The obtained results indicate that the proposed antenna is a good candidate for WLAN applications.

Metamaterial superstrate microstrip patch antenna for 5G wireless communication based on the theory of characteristic modes

“…Studies on antennas have been reported by many researchers who seek to enhance antenna properties such as bandwidth, gain, efficiency and antenna size. In this connection, a rectangular patch antenna associated with left-handed medium was investigated in [9]. The results showed the antenna to be more directive and the gain to be high, although size reduction remained a major chal- lenge.…”

Design and Analysis of Compact Metamaterial Mimo Antenna for Wlan Applications

“…To study the behavior of the planar metamaterial structure, the simulation of the CSRR unit cell has been carried out as described in our previous study [16]. As the simulation model shown in the inset of Fig.…”

“…The radius of rounded contour r = 24.5 mm (0.196λ) is selected for the accepted S-parameters and minimum antenna size. We note that compared to the size of conventional patch antenna elements (without CSRR loaded ground), which is calculated using the formulas as shown in [17], the size of an individual patch antenna with CSRR loaded ground is reduced up to 77 % [16].More details on the individual patch antenna design can be found in our previous work [16].…”

“…However, most of these studies have been focused on a single antenna design using CSRR loaded ground plane, but very few investigations of MIMO antenna design using that structure have been reported. For example, in our previous study, the loading of CSRR in the ground plane of microstrip antenna that can be reduced up to 77 % antenna size is proposed [16].…”

Metamaterials in Application to Improve Antenna Parameters

“…The design of unit cells of metamaterials is based on the calculation of size and simulation of unit cells, so that the parameters ε and μ of these unit cells will satisfy the requirements at the expected resonant frequency. Depending on the structure and size of each unit cell, we can obtain different ε, μ, and resonant frequencies f. For each unit cell type, the dimensions of unit cell can be adjusted to satisfy condition at resonant frequency f r [25]. A unit cell is usually smaller than 1/10 of the operating wavelength (see Figure 7), depending on the shape of the metamaterial, but the unit cell size is different [19,20,26].…”