Wireless Charging Of Mobile Using Microwaves

Abstract In todays forward-looking era, fluid environs exhaust become a basic need for citizenry all over the world. The charging of mobile telephone set has become an arduous task. It is a hectic task to carry e realwhere the charger of mobile phones or any electronic gad delineate while travelling or it is rattling cruel when your mobile phone getting onward by the beat you urgently need it. It is the major problem in todays electronic gadgets. Though the world is leading with the developments in engineering science, only this technology is still in sleep with because of certain limitations. Todays world requires the complete technology and this purpose is solved victimisation a technique called radio receivercommunication Charging of Mobile Phones Using Microwaves.INTRODUCTIONBASIC CONCEPTSThe technique mentioned has two basic concepts. They atomic number 18- electromagnetic spectrum Microwave regionELECTROMAGNETIC SPECTRUM-When white dim is shone through a prism it is garbled out into all the colors of the rainbow this is called the visible spectrum. According to some physicians light consists of tiny particles called photons. Photons are bundle of energy. The speed of light is about ccc,000,000 meters per import as light hit something that means it may be shrink off, go right through or get absorbed. If they bounce off something and then go into your eye you will see the thing they have bounced off. This is the cause of vision.MICROWAVE REGIONMicrowaves are a form of electromagnetic radiation with wavelengths ranging from as long as one meter to as unmindful as one millimeter, or equivalently, with frequencies between 300 MHz (0.3 GHz) and 300 GHz. Microwave technology is extensively apply for point-to-point telecommunications (i.e., nonbroadcast uses).Microwaves are oddly suitable for this use since they are more easily focused into narrower beams than radio waves, allowing frequency reuse their comparatively prouder frequencies al low broad wadwidth and mettlesome data transmission rates, and barbel sizes are smaller than at get frequencies because antenna size is inversely proportional to transmitted frequency. At high frequencies, atmosphere is less transparent to microwaves. Microwaves are used in applications where learning has to travel long distances between ground stations and communications satellites. Microwaves are also employed in microwave ovens and radar technology.The frequency woof is an early(a) important aspect in GHz ISM band for the purpose of concern. As Indus-trial, Scientific and Medical (ISM) some bands are retain for some specific purpose. So we faecal mattert use it. here(predicate) S band 2.45 GHz is freely available band which bottomland be used for experimentWIRELESS POWER TRANSMISSIONWireless power transmission works on the principle of Magnetic induction. As we put one wave carrying latest through it, it creates a magnetic field near to it. And if we put other coil ov er there than it is induce by the first coil and it carry current from it. This is the principle of magnetic induction.WIRELESS POWER TRANSMITTING formationThis system gives the validity of principle of magnetic induction in radio communication. The basic components of a radio transmitting system are- transmitter It consists of microwave generator and transmitting antenna(preferably, slotted waveguide antenna) Receiver It consists of a receiving antenna and a receiver. A receiver is major part in wireless mobile charging.SYSTEM DESIGNThe system visualizeing of wireless charging of mobile phone utilise microwaves mainly consist of four parts asTransmitter design Receiver design The Process of Rectification Sensor CircuitryTRANSMITTER DESIGNIt mainly consists of a magnetron which is a diode vacuum tube with cathode filament. Magnetron is actually behaved as an oscillator to produce microwaves. It can be done by putting magnet between the go chambers which is the center of the o scillator. These resonating chambers are named as anode in the magnetron.When electrons come out from the cathode and go direct towards the Anode, it passes through the magnetic field. It starts go in the resonating cavity and start producing waves according to its frequency. And the generated RF subscribe by this flow outside of the chamber.RECEIVER DESIGN-The basic addition to the mobile phone is going to be type of antenna that is used to direct convert microwave energy into DC electricity. This is done by a component known as Rectenna. Actually the size of Rectenna can be reducing using the Nano technology.Rectenna system The elements of Rectenna are usually arranged in antennae. The current included by the microwaves in the antenna is rectified by the diode which powers a load connected across the diode. Scotty diodes are used because they have low voltage drop and high speed so that they have low power loss. Rectenna are highly in force(p) at converting microwave energy ab ove 90% have been ob rund with mode A sensor must be added at the receiver side. Since the phone must be aerated while a person is talking. So here sensor is used to detect wither the phone is using microwaves or not.PROCESS OF RECTIFICATION-Microwave can easily travel through the media but it also loses some energy. So our key objective is to rectify the move and to rectify the waves at the low cost. And also we have to make the undercover work more sensitive. As we know that bridge rectification is more efficient than the single diode we use this for the better performance. We use the schottky diode to get the better impedance. The Schottky breastwork diode is an ideal diode, such as for a 1 ampere limited current PN interface. Another advantage of the Schottky barrier diode is a very low noise index that is very important for a communication receiver its working scope may reach20GHzSENSOR CIRCUITRY-The sensor circuitry is a any message signal. This is very important as the ph one has to be charged as long as the exploiter is talking. . Thus a simple frequency to voltage converter would serve our purpose. And this converter would act as switches to trigger the rectenna circuit to on. So when our phone is receiving microwave signal it make the rectenna circuit on and charge the battery. hither in India the operating frequency of the GSM is 900 MHz to 1800 MHz. We can use LM2907 for F to V conversion.CONCLUSIONIt can be concluded from this technique, this usage of mobile phones is make simpler and leads to elimination of the need for separate chargers for mobile phones making charging universal. This improvisation in mobile phones allows the mobile phone users to carry their phones anywhere even if the rear is devoid of facilities for charging. Thus the tagline the more you talk, the more your mobile phone is charged is perfectly implemented. With this proposal the manufacturers would be able to remove the talk date and battery standby from their phone s pecifications. A novel use of the rectenna and a sensor in a mobile phone could provide a new dimension in the revelation of mobile phone.