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In this work, a self-generated power capacitance measurement circuit for wireless health monitoring system is proposed. Hybrid energy from thermal and solar energy is expected to be used to supply the energy harvester. The present results has shown using low cost, off-the-shelf components, the capacitance measurement circuit is able to sense a linear capacitance range of 9.8 – 10.35 pF over 1.478...
Monitoring a large number of interacting sensors, actuators and controllers in sensitive locations simultaneously, requires efficient and fast network. Sophisticated computer controlled systems in modern aircrafts have become a necessity. Wired connectivity can be both awkward and hazardous. In this paper we propose wireless connectivity based on Impulse-Radio Ultra Wideband (IR-UWB) system. It is...
This paper shows the simulation results of the effects of phase difference on the output ripple voltage of a low voltage power supply circuit. The circuit uses a rectifier circuit which adds the squares of two out-of-phase sine waves. The circuit focuses on the constraint of rectifying a low voltage input AC source while analyzing the ripple voltage in the output and is designed in such a way that...
Multi-band antennas are very important in many application systems such as mobile phone jammer. A new shape triple-band microstrip antenna is proposed in this paper. By embedding h-shaped slots placed in the centre of a microstrip patch, the triple-band character can be achieved. Procedures to select the length and location of the h-shaped slots were discussed in detail. The required antenna gain,...
Powering implantable low wattage biomedical devices and sensors through non-contact means is on the rise over the past recent years. In view of that, inductive coupling is currently the most favorable means of transferring energy for powering the low wattage implanted devices. The wireless inductive link works as an energy link to power up remote devices and also acts as a communication link to retrieve...
The advancement of magnetic sensors in biomedical sector has led toward an immense range of applications. Inductive coupling link has been validated as the most suitable and efficient means for wireless transfer of signal where coupling coefficient plays a crucial role to determine the strength of the transmission in power transfer. In view of that an urgent investigation of the relative magnetism...
This paper attempts to design a triple band h-slot antenna by using feed line technique. These bands cover GSM mobile phone system (0.9 and 1.8 GHz) and ISM band which is used for Bluetooth and wireless local area network bands applications. The CST microwave studio software is used as a tool for simulation. This antenna is an attractive candidate for important applications like mobile phone communication...
A wireless power supply system based on inductive coupling approach has been developed for implantable biomedical devices that achieves excellent transducer performance by obviating the need for electrical connectors. In this paper, we report in detail the modeling and electrical analysis of an inductive power link for activation of microwatt electronic implants. As the biomedical application requires...
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