02-02-2013, 03:03 PM
WIRELESS CHARGING OF HANDHELDS USING RADIO FREQUENCY OBTAINED FROM NON-CONVENTIONAL ENERGY RESOURCES
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ABSTRACT:
Sustainable development will require replacement of older technologies and increased use of both renewable energy and wireless technology. What if there was a way we could harvest the energy that is being transmitted and use it as a source of power for handhelds? And also that to from Non-conventional energy source like solar power. This paper deals with a system that enables you to charge your handhelds wirelessly form zero pollutant solar energy.
A system that to be presented will be using a receiving antenna and charge pump technology to charge a handhelds battery without wires. The base station which is a transmitter of power is powered from solar energy. The solar energy which is trapped is transmitted as radio frequency from the base station. At the receiving end we contain antenna that is tuned to transmitted frequency and a charge pump to charge up the battery of Handhelds.
INTRODUCTION
Global warming from greenhouse gases, mainly CO2, is one of today’s most important environmental issues. Electricity production is often a source of CO2 emissions, for instance when fossil fuel is combusted in power plants. So Non-conventional energy source like solar power solves this problem. At present use of hand held also increased and power consumed by these devices also increased rapidly. However, as technology has advanced and made our phones smaller and easier to use, we still have one of the original problems: we must plug the phone into the wall in order to recharge the battery. Most people accept this as something that will never change, so they might as well accept it and carry around either
extra batteries with them or a charger. Either way, it’s just something extra to weigh a person down. There has been research done in the area of shrinking the charger in order to make it easier to carry with the phone. One study in particular went on to find the lower limit of charger size. But as small as the charger becomes, it still needs to be plugged in to a wall outlet. How can something are called “wireless” when the object in question is required to be plugged in, even though periodically?
CONCLUSION
In this paper, we submit a first step towards a goal that would have profound ramifications on the cellular phone industry and the portable electronic device industry as a whole. Simulation results show that while we were not completely successful at achieving our overall goal of having the charging circuit in a stand be able to charge the battery of a cellular phone while it was within the phone using a wireless RF source, we have completed the goal of being able to charge the battery while the phone is in its stand. Circumventing the proprietary circuitry in the charging path will allow future adaptation of the wireless RF energy harvesting concept produced by this research.