Efficient Electromagnetic Analysis of a Dispersive Head Model Due to Smart Glasses Embedded Antennas at Wi-Fi and 5G Frequencies

Numerical study of electromagnetic interaction between an adjacent antenna and a human head model requires long computation time and large computer memory. In this paper, two speeding up techniques for a dispersive algorithm based on finite-difference time-domain method are used to reduce the required computation time and computer memory. In order to evaluate the validity of these two speeding up techniques, specific absorption rate (SAR) and temperature rise distributions in a dispersive human head model due to radiation from an antenna integrated into a pair of smart glasses are investigated. The antenna integrated into the pair of smart glasses have wireless connectivity at 2.4 GHz and 5th generation (5G) cellular connectivity at 4.9 GHz. Two different positions for the antenna integrated into the frame are considered in this investigation. These techniques provide remarkable reduction in computation time and computer memory.

Impact of Dielectric Constant on Embedded Antenna Efficiency

The impact of dielectric constant on radiation efficiency of embedded antenna located inside human body or another liquid environment is investigated both analytically and numerically. Our research is analysed and simulated at 403 MHz in the MedRadio band (401–406 MHz) and within a block of 2/3 human muscle phantom. Good agreement is achieved between analysis and simulation results. This work provides a guidance in selecting insulator for embedded antennas.

New Flexible Medical Compact Antenna: Design and Analysis

Some results on embedded antennas for medical wireless communication systems are presented. Medical telemetry can advantageously assist medical diagnostics. For example, you can better locate a diseased area by monitoring temperature inside the human body. In order to establish efficient wireless links in such an environment, a special attention should be paid to the antenna design. It is required to be of a low profile, very small regardless of the working frequency—434 MHz in the ISM band, safe, and cost effective. Design of the as-considered antenna is proposed based on a simple model. The approach has been demonstrated for a compact flexible antenna with a factor of 10 with respect to the half-wave antenna, rolling up inside an ingestible pill. Measured and calculated impedance behaviour and radiation characteristics of the modified patch are determined. Excellent agreement was found between experiment and theory.

Signal Quality Evaluation of Embedded Antennas in Composite Panels

In this paper, an attempt is made to evaluate signal performance of an antenna embedded in a viscoelastic thermoset composite polymer commonly known as Sheet Moulding Compound (SMC). Signal quality is investigated by studying the impedance matching and radiation pattern results of an embedded antenna. The investigation was done experimentally and using simulation software CST Microwave Studio. Two types of antenna have been investigated. One being planar inverted conical antenna (PICA) that operates in the range of about 850 MHz to about 10 GHz and the second one being slot dipole antenna that operates in the range of 1.2 GHz to 1.4 GHz. The signal quality was evaluated at four different antenna configurations. Configuration 1 – antenna with 0° angle deformation, configuration 2 – antenna with 22° angle, configuration 3 – antenna with 45° angle and configuration 4 – 90° angle. The effect of these four configurations on signal quality of each antenna is discussed and simulation results are compared to experimental results.