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The complementary split ring resonator (CSRR) is a widely used planar metamaterial structure in the design of microstrip antennas and other microstrip elements. In this work, a study has been made on converting a single band microstrip antenna into a dual band microstrip antenna by etching a CSRR structure from the ground plane below the patch. Initially, a simulation based study of the phenomenon...
This paper introduces an example of a small antenna measurement system with the optical fiber link technologies in the millimeter-wave band. The effect of the facilities such as the connect jig and the measurement system should be carefully estimated in the antenna measurement. The radiation patterns of a 60 GHz small package antenna have been measured by the optical fiber link system.
To enable effective signal detection of human microwave, it is important to design high performance ultra-wideband wearable antenna. Due to its intrinsic complexity, antenna optimization is a nonlinear problem that is expensive to simulate and optimize. In this paper, we propose to optimize tapered slot antenna (TSA) with an improved particle swarm optimization (PSO) algorithm. Comparing to the state-of-the-art...
In the paper, a magneto-electric (ME) dipole antenna with a dynamic H-plane beamwidth control is presented. The design methodology uses tunable parasitic dipoles placed on the sides of a driven ME dipole along its H-plane. Each parasitic dipole is loaded with a varactor diode to change the strength of the mutual coupling; therefore, the overall radiation pattern produced by the driven ME dipole and...
A wideband dual-polarized base station antenna for 2G/3G/LTE bands is proposed in this paper. The antenna consists of two T-shaped coupling feeding structure which result in a wide impedance bandwidth, a pair of double-loop-shaped dipole which are located perpendicularly, and a box-shaped reflector to realize a unidirectional radiation pattern. A prototype of the proposed antenna is designed, fabricated...
Wireless Fidelity (Wi-Fi) is a wireless telecommunications technology developed by IEEE 802.11. Wi-Fi has a goal so that users can access the Internet anywhere. According to the IEEE standard for Wi-Fi, the network works at 2.4 GHz –2.484 GHz. This paper describes design and implementation of microstrip antenna on the wireless LAN card. All components of the antenna are placed on FR4 (εr=4.3) substrate...
A broadband ±45 slant dual-polarized base station antenna element for LTE700/GSM850/GSM900 is presented in this paper. The proposed antenna is composed of two pairs of butterfly radiation patches which are coupling-fed by two Y-shaped microstrip lines. A prototype of the proposed antenna is designed fabricated and test. The measured results show that a bandwidth of 21.7% (0.65–1 GHZ) for VSWR<1...
A compact triple-band MIMO antenna for WLAN/WiMAX applications is proposed. The MIMO antenna composes of two symmetric elements, each of which includes three branches: Br1, Br2 and Br3. These three branches yield three resonances, covering 2.4/3.5/5.5 GHz bands, respectively. An inverted-U neutralization line with four implanted branches improves the impedance bandwidth and the isolation. The isolation...
This paper presents a wearable antenna of 2.4 GHz Bluetooth for smart glasses application. This antenna consists of two elements array planar inverted-F antennas (PIFA) using coaxial cable to connect two antenna elements together. Moreover, Specific Absorption Rate (SAR) in user's head is also calculated using the model provided by CST software. The frequency range for reflection coefficient <...
A monopole-like bowtie slot ultra wideband (UWB) antenna is proposed and designed for UWB applications. To increase the impedance bandwidth of ordinary monopole patch antenna modifications are made in the patch and ground plane geometry. The antenna is practically fabricated and measured. Simulated and measured results show a good agreement. The designed antenna offers compact size, operates across...
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