Wirelessmobilechargingthroughmicrowaves2 r aviRavi Kumar
WIRELESS CHARGING
INTRODUCTION Always the recharging of mobile phone batteries has always been a problem for us. This problem will be solved after our proposal………!!!!!!!! In this paper a new proposal has been made so as to make the recharging of the mobile phones is done automatically as you talk in your mobile phone!
3. The microwave signal is transmitted from the transmitter along with the message signal using special kind of antennas called slotted wave guide antenna at a frequency is 2.45 GHz Thus the more you talk, the more is your mobile phone charged!!!!!!! This is new isn’t?!!
4. What Is Microwaves????? Microwaves are good for transmitting information from one place to another because microwave energy can penetrate haze, light rain and snow, clouds, and smoke. Shorter microwaves are used in remote sensing. These microwaves are used for radar like the Doppler radar used in weather forecasts
5. Microwaves > Frequency Range: 3GHZ to 300GHZ > Remort Sensing. > Communication Industry. >2.45GHZ ISM Band.
6. TRANSMITTER DESIGN The MAGNETRON is a self-contained microwave oscillator that operates differently from the linearbeam tubes, such as the TWT and the klystron. ——Magnetron is used to produce high-power output required in radar and communications equipment —Microwaves used in mobile communication are also produced by similar Oscillators
7. Magnetron - Construction
8. PRINCIPLE OF OPERATION
9. WHAT’S RECTANNAE??? What’s rectannae you are confused…….it’s nothing but the combination of rectifier and antenna. Antenna is to receive the microwave signal and it just feed the signal to rectifier . Rectifier is to convert the AC signal to PULSATING DC signal.
10. RECEIVER DESIGN The basic addition to the mobile phone is going to be the rectenna. A rectenna is a rectifying antenna, a special type of antenna that is used to directly convert microwave energy into DC electricity.
11. ADVANTAGES Use of separate chargers is eliminated. Electricity is saved The phone can be charged anywhere anytime. Wireless energy transfer can potentially recharge the mobile phones without chords. Only one microwave transmitter can serve to all the service providers in that area. The need of different types of chargers by different manufacturers is totally eliminated.
12. DISADVANTAGES The transmitter and receiver also should be very powerful devices as the distance increases. Slower Charging. Wireless transmission of the energy causes some drastic effects to human body, because of its radiation. More costly.
Wirelessmobilechargingthroughmicrowaves2 r aviRavi Kumar
WIRELESS CHARGING
INTRODUCTION Always the recharging of mobile phone batteries has always been a problem for us. This problem will be solved after our proposal………!!!!!!!! In this paper a new proposal has been made so as to make the recharging of the mobile phones is done automatically as you talk in your mobile phone!
3. The microwave signal is transmitted from the transmitter along with the message signal using special kind of antennas called slotted wave guide antenna at a frequency is 2.45 GHz Thus the more you talk, the more is your mobile phone charged!!!!!!! This is new isn’t?!!
4. What Is Microwaves????? Microwaves are good for transmitting information from one place to another because microwave energy can penetrate haze, light rain and snow, clouds, and smoke. Shorter microwaves are used in remote sensing. These microwaves are used for radar like the Doppler radar used in weather forecasts
5. Microwaves > Frequency Range: 3GHZ to 300GHZ > Remort Sensing. > Communication Industry. >2.45GHZ ISM Band.
6. TRANSMITTER DESIGN The MAGNETRON is a self-contained microwave oscillator that operates differently from the linearbeam tubes, such as the TWT and the klystron. ——Magnetron is used to produce high-power output required in radar and communications equipment —Microwaves used in mobile communication are also produced by similar Oscillators
7. Magnetron - Construction
8. PRINCIPLE OF OPERATION
9. WHAT’S RECTANNAE??? What’s rectannae you are confused…….it’s nothing but the combination of rectifier and antenna. Antenna is to receive the microwave signal and it just feed the signal to rectifier . Rectifier is to convert the AC signal to PULSATING DC signal.
10. RECEIVER DESIGN The basic addition to the mobile phone is going to be the rectenna. A rectenna is a rectifying antenna, a special type of antenna that is used to directly convert microwave energy into DC electricity.
11. ADVANTAGES Use of separate chargers is eliminated. Electricity is saved The phone can be charged anywhere anytime. Wireless energy transfer can potentially recharge the mobile phones without chords. Only one microwave transmitter can serve to all the service providers in that area. The need of different types of chargers by different manufacturers is totally eliminated.
12. DISADVANTAGES The transmitter and receiver also should be very powerful devices as the distance increases. Slower Charging. Wireless transmission of the energy causes some drastic effects to human body, because of its radiation. More costly.
WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVESgayathri mavuri
in this paper a new propasal has been made so as to make the recharging of mobile phones is done automatically as you talk in your mobile phone.this is done by use of microwaves.
Wireless chrging of mobile phone using microwaveNilesh Bhagare
Cell Phones are a piece of our life. It is the quickest and the most straightforward medium of correspondence. Battery life of cell telephone is dependably been an issue for makers. Individuals are griping about their versa tile’s battery life, that they don't have long battery life furthermore they need to charge their telephone a few times. In this paper another thought is indicated to charge your cell telephone anyplace you need without associating its charger. This is carried out utilizing microwaves. Microwaves are the radio waves which give correspondence between two cell telephones. The microwave is sent with the message by the transmitter utilizing radio wire at the recurrence of 2.45 GHz. Here we are utilizing Microwaves as the wellspring of vitality to charge the telephone. We need to include a sensor, a rectenna circuit and a filer in our cell telephone to do the employment. By including these things we can charge our telephone utilizing microwave when we talk. So as we talk more we can charge more!!
This project explains a simple wireless battery charger circuit that charges your mobile when placed near the transmitter.
This circuit may be used as wireless power transfer circuit, wireless mobile charger circuit, wireless battery charger circuit, etc.
Wireless Charging which is technically called as Inductive charging uses an electromagnetic field to transfer energy between two objects. This is actually done with the help of a charging station. Energy transferred can then be used to charge batteries or run the device.
more visit:- http://www.energous.com/
This technology lets Internet connectivity to RF powered devices.Rf powered devices are those devices which charge their batteries from surrounding Radio Frequency signals present. These devices can communicate with other devices using backscatter technique.
WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVESgayathri mavuri
in this paper a new propasal has been made so as to make the recharging of mobile phones is done automatically as you talk in your mobile phone.this is done by use of microwaves.
Wireless chrging of mobile phone using microwaveNilesh Bhagare
Cell Phones are a piece of our life. It is the quickest and the most straightforward medium of correspondence. Battery life of cell telephone is dependably been an issue for makers. Individuals are griping about their versa tile’s battery life, that they don't have long battery life furthermore they need to charge their telephone a few times. In this paper another thought is indicated to charge your cell telephone anyplace you need without associating its charger. This is carried out utilizing microwaves. Microwaves are the radio waves which give correspondence between two cell telephones. The microwave is sent with the message by the transmitter utilizing radio wire at the recurrence of 2.45 GHz. Here we are utilizing Microwaves as the wellspring of vitality to charge the telephone. We need to include a sensor, a rectenna circuit and a filer in our cell telephone to do the employment. By including these things we can charge our telephone utilizing microwave when we talk. So as we talk more we can charge more!!
This project explains a simple wireless battery charger circuit that charges your mobile when placed near the transmitter.
This circuit may be used as wireless power transfer circuit, wireless mobile charger circuit, wireless battery charger circuit, etc.
Wireless Charging which is technically called as Inductive charging uses an electromagnetic field to transfer energy between two objects. This is actually done with the help of a charging station. Energy transferred can then be used to charge batteries or run the device.
more visit:- http://www.energous.com/
This technology lets Internet connectivity to RF powered devices.Rf powered devices are those devices which charge their batteries from surrounding Radio Frequency signals present. These devices can communicate with other devices using backscatter technique.
The main objective of this current proposal is to make the recharging of the mobile phones independent of their manufacturer and battery make. In this paper a new proposal has been made so as to make the recharging of the mobile phones is done automatically as you talk in your mobile phone!
The microwave signal is transmitted from the transmitter along with the message signal using special kind of antennas called slotted wave guide antenna at a frequency is 2.45 GHz
Wireless mobile charging using microwavesKiriti Varkur
Intro, EM spectrum, most commonly used frequency bands, microwaves, working model, Parts: transmitter, magnetron, slotted wave guide antenna, RF cable, receiver section, sensor circuitry, rectenna, advantages and conclusion
A presentation on wireless charging.
Inductive charging (also known as wireless charging or cordless charging) uses an electromagnetic field to transfer energy between two objects through electromagnetic induction. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.
Induction chargers use an induction coil to create an alternating electromagnetic field from within a charging base, and a second induction coil in the portable device takes power from the electromagnetic field and converts it back into electric current to charge the battery. The two induction coils in proximity combine to form an electrical transformer Greater distances between sender and receiver coils can be achieved when the inductive charging system uses resonant inductive coupling.
Recent improvements to this resonant system include using a movable transmission coil (i.e. mounted on an elevating platform or arm) and the use of other materials for the receiver coil made of silver plated copper or sometimes aluminium to minimize weight and decrease resistance due to the skin effect.
Have you ever wondered how search works while visiting an e-commerce site, internal website, or searching through other types of online resources? Look no further than this informative session on the ways that taxonomies help end-users navigate the internet! Hear from taxonomists and other information professionals who have first-hand experience creating and working with taxonomies that aid in navigation, search, and discovery across a range of disciplines.
This presentation, created by Syed Faiz ul Hassan, explores the profound influence of media on public perception and behavior. It delves into the evolution of media from oral traditions to modern digital and social media platforms. Key topics include the role of media in information propagation, socialization, crisis awareness, globalization, and education. The presentation also examines media influence through agenda setting, propaganda, and manipulative techniques used by advertisers and marketers. Furthermore, it highlights the impact of surveillance enabled by media technologies on personal behavior and preferences. Through this comprehensive overview, the presentation aims to shed light on how media shapes collective consciousness and public opinion.
This presentation by Morris Kleiner (University of Minnesota), was made during the discussion “Competition and Regulation in Professions and Occupations” held at the Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found out at oe.cd/crps.
This presentation was uploaded with the author’s consent.
Sharpen existing tools or get a new toolbox? Contemporary cluster initiatives...Orkestra
UIIN Conference, Madrid, 27-29 May 2024
James Wilson, Orkestra and Deusto Business School
Emily Wise, Lund University
Madeline Smith, The Glasgow School of Art
0x01 - Newton's Third Law: Static vs. Dynamic AbusersOWASP Beja
f you offer a service on the web, odds are that someone will abuse it. Be it an API, a SaaS, a PaaS, or even a static website, someone somewhere will try to figure out a way to use it to their own needs. In this talk we'll compare measures that are effective against static attackers and how to battle a dynamic attacker who adapts to your counter-measures.
About the Speaker
===============
Diogo Sousa, Engineering Manager @ Canonical
An opinionated individual with an interest in cryptography and its intersection with secure software development.
Acorn Recovery: Restore IT infra within minutesIP ServerOne
Introducing Acorn Recovery as a Service, a simple, fast, and secure managed disaster recovery (DRaaS) by IP ServerOne. A DR solution that helps restore your IT infra within minutes.
3. Mobile phones becoming basic part of life
Recharging of mobile phones is a big problem
Objective—to recharge any mobile phone independent of
manufacturer and battery make
Achieved by recharging battery while talking using
microwaves
3
4. More you talk more the mobile get charged!
No separate mobile charger
Additives to mobile handsets:
Sensor
Rectenna
4
5. Microwave signal is transmitted from transmitter along with
message signal using slotted waveguide antenna at frequency
2.45 GHz
Charging made universal
5
7. Wavelength : 1 mm-30 cm
Microwave can be used for:
1. Measuring body temperature
2. Transmitting information
3. Remote sensing
4. RADAR
5. Communication
7
8. We choose s –band of microwave region(2-4GHz)
8
9. Select license free 2.45 GHz Industrial, Scientific and
Medical (ISM) radio bands
ISM bands are reserved internationally for non-commercial
use of RF electromagnetic fields for industrial, scientific and
medical purpose
9
11. Transmitter has two sections:
◦ Magnetron
◦ Slotted waveguide antenna
11
12. • Magnetron is a vacuum tube oscillator that generates high-
power electromagnetic signals in the microwave frequency
range.
12
13. It is a microwave tube in which electrons generated from a heated
cathode are affected by magnetic and electric fields to produce
microwave radiation
Magnetron is used to produce high-power output required in radar
and communication equipment
13
16. Slotted antenna arrays used with waveguides are popular
antenna in navigation, radar and other high-frequency systems
Has high efficiency and gain of 13dB
Here we use frequency of 2.45GHz
16
17. 17
It is used as ideal power transmitter
(because of its high aperture
efficiency >95%) .
It has high power handling capacity
.
It has 64 slots of power uniformly
through free space to the rectenna.
19. What’s rectanna you are confused…….it’s nothing but the
combination of rectifier and antenna.
Antenna is to receive the microwave signal and it just feed the
signal to rectifier .
Rectifier is to convert the AC signal to PULSATING DC
signal.
19
Rectenna = Rectifier + Antenna.
20. Rectenna is a rectifying circuit that converts microwave
energy into DC output.
Single Rectenna is approx 23 mm2 , arranged to form an array
suitable to the shape of mobile phone.
Very thin as sheets and can be used at the back of the Cell
phones
In our design it consists of a single diode power rectifier in
“hybrid technology” with improved sensitivity at low power
levels.
20
21. The Schottky diode microwave rectifying circuit is used
here as its efficiency is found to be greater than 90%.
To make low cost power rectifier for low and high power
levels of 2.45GHz with good efficiency of rectifying operation
Used to improve transmission efficiency
21
22. Directly converts the microwave signal into DC power.
The efficiency is up to 90% in laboratory environments
Comprises of a dipoles and diodes.
Usually its elements are arranged in the mesh pattern
22
23. Simple circuit which detects whether the user is making a call
Simple F to V converter, this would serve our purpose
Operating frequency of mobile phone operators for GSM
system for mobile communication in India is 900MHz or
1800MHz
Simple yet powerful F to V converter is LM2907
23
25. On the reception of the microwave signal ,the sensor circuitry
directs rectenna circuit to ON
Rectenna circuit converts microwave energy to dc output
Mobile phone begins to charge using the microwave power as
long as the user talks over cell phone.
25
26. Charging mobiles wirelessly
Saving time for charging
Wastage of power is less
Better than witricity
Get charged as we make call during long journey
26
27. Radiation problems may occur
Network traffic may cause problems in charging
Charging depends on network coverage
Rate of charging may be of minute range
27
28. “ WIRELESS CHARGING OF MOBILE
PHONES”
Use of rectenna and sensor in mobile phone could provide
new dimension in the revolution of MOBILE POWER
28
29. Thus this paper successfully demonstrates a novel method of
using the power of microwave to charge mobile phones
without use of wired chargers.
It provides great advantage to mobile phone users to carry
their phones anywhere even if the place is devoid of facilities
for charging.
Has effect on human beings similar to that from cell phones at
present.
29
30. Ms.Priyanka M.Shah,Ms.Ila D.Paramar,Ms.Heena R.Patel
“Wireless Power Transmission Using Microwave”
www.seminarprojects.com
www.seminarsonly.com
www.wikipedia.org
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