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In this paper, a study is conducted into using an auxiliary ring to enhance the captured (confined) electric field at the gap of dipole nanoantenna for the use in solar rectennas. The system is constructed of main resonator, the dipole antenna, and a booster resonator, the auxiliary ring. It is generally accepted that the dipole antenna captures limited amount of solar radiation. Thus, boosting its...
The aim of this paper is to investigate the potential of suspended planar patch antenna with rectangular patch slots for transferring wireless energy by collecting electromagnetic waves from ambient microwave sources. The operating frequency is aimed to cover both the 3G mobile communication band of 2.11–2.17 GHz as well as WiFi band of 2.45 GHz, hence, the required bandwidth is approximately 15%...
In this paper, two UHF meandered line antennas have been designed, simulated, fabricated and measured. These are, the meandered antenna and the spiral antenna for RFID and WSN's applications. A MoM-based electromagnetic simulator has been utilized to simulate the designed antennas. The antennas have been fabricated and their performances have been tested in anechoic chamber for more accurate results...
In this paper, a study is conducted into optimization of quantum and coupling efficiency of solar rectennas. The optical antenna impedance is calculated using Method of Moment, whereas the Metal/Insulator/Metal (MIM) diode characteristics are calculated using Simmons' formula of tunneling current. The diode resistance and the responsivity have been determined based on the I–V characteristics of the...
In this paper, an edge-fed quarter-wave matched circularly polarized microstrip antenna with a circular truncated patch and 2-by-1 T-junction planar array configuration are studied using finite element method (FEM) based simulator. The aim of the work is to investigate the microstrip antennas feasibility in capturing energy from ambient EM radiation and converting it into direct electric power. The...
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