15-04-2017, 09:14 AM
ieee format in wireless charging of mobile phones using microwaves
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download ieee format of wireless charging of mobile phones using microwaves
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ieee format in wireless charging of mobile phones using microwaves
17-04-2017, 09:48 AM
The battery of a mobile phone is always considered as a major problem for manufacturers. People always complain about the battery of their phones, which do not have a long battery life. In this article, we would like to introduce a new idea with charging wireless cell phones with the help of large scale microwaves. Microwaves are the radio waves that are used to communicate through two mobile phones. Here we use microwaves as energy transmitters for our mobile phones. For this we need a sensor, a rectena circuit and a filter in our mobile phone. The microwave is sent with the message by the transmitter using the antenna at 2.24 GHz frequency.
With mobile phones becoming a basic part of life, recharging mobile phone batteries has always been a problem. Mobile phones vary in their talk time and standby battery according to their manufacture and batteries. All these phones regardless of their manufacturer and the batteries have to be put to recharge after the battery has drained. The main objective of this current proposal is to make the recharge of the mobile phones independent of its manufacturer and the battery. This document has made a new proposal for the recharge of mobile phones is done automatically while you talk on your mobile phone. This is done by using microwaves. The microwave signal is transmitted from the transmitter together with the message signal using a special type of antennas called a slotted waveguide antenna at a frequency of 2.45 GHz.
There are minimal additions, which have to be made on mobile phones, which are the addition of a sensor, a rectena, and a filter. With the above configuration, the need for separate chargers for mobile phones is eliminated and makes universal charging. Therefore, the more you talk, the more your mobile phone charges! With this proposal the manufacturers would be able to eliminate the talk time and stand battery from your phone's specifications.
The basic addition to the mobile phone is going to be the rectena. A rectena is a grinding antenna, a special type of antenna that is used to directly convert the microwave energy into DC electricity. Its elements are usually arranged in a mesh pattern, giving it a distinct appearance from most antennas. A simple rectena can be constructed from a Schottky diode placed between the antenna dipoles. The diode rectifies the current induced in the antenna by the microwaves. Straights are highly efficient in converting microwave energy into electricity. In laboratory environments, efficiencies have been observed more than 90%. Some experiments have been done with reverse rectena, converting electricity into microwave energy, but the efficiencies are much lower - only in the area of 1%. With the advent of nanotechnology and MEMS the size of these devices can be reduced at the molecular level.
It has been theorized that similar devices, reduced to the proportions used in nanotechnology, could be used to convert light into electricity with much greater efficiencies than are currently possible with solar cells. This type of device is called an optic rectus. Theoretically, high efficiencies can be maintained as the device shrinks, but experiments funded by the National Renewable Energy Laboratory of the United States have so far only achieved an efficiency of about 1% while using infrared light. Another important part of our receiver circuit is a simple sensor.
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