PPT on Wireless charging of mobile using microwaves
-
Upload
divya-kj -
Category
Technology
-
view
366 -
download
28
Transcript of PPT on Wireless charging of mobile using microwaves
![Page 1: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/1.jpg)
ByDivya k.j4sm11cs021
1
![Page 2: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/2.jpg)
INTRODUCTION
WHAT’S HAPPENING
MICROWAVE REGION
FREQUENCY SELECTION
BLOCK DIAGRAM
TRANSMITTER SECTION
RECEIVER SECTION
ADVANTAGES
DISADVANTAGES
APPLICATION
CONCLUSION
2
![Page 3: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/3.jpg)
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
![Page 4: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/4.jpg)
More you talk more the mobile get charged!
No separate mobile charger
Additives to mobile handsets:
Sensor
Rectenna
4
![Page 5: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/5.jpg)
Microwave signal is transmitted from transmitter along with
message signal using slotted waveguide antenna at frequency
2.45 GHz
Charging made universal
5
![Page 6: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/6.jpg)
6
![Page 7: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/7.jpg)
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
![Page 8: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/8.jpg)
We choose s –band of microwave region(2-4GHz)
8
Designation Frequency range
L Band 1 to 2 GHz
S Band 2 to 4 GHz
C Band 4 to 8 GHz
X Band 8 to 12 GHz
Ku Band 12 to 18 GHz
K Band 18 to 26 GHz
Ka Band 26 to 40 GHz
Q Band 30 to 50 GHz
U Band 40 to 60 GHz
![Page 9: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/9.jpg)
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
![Page 10: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/10.jpg)
10
![Page 11: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/11.jpg)
Transmitter has two sections:
◦ Magnetron
◦ Slotted waveguide antenna
11
![Page 12: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/12.jpg)
• Magnetron is a vacuum tube oscillator that generates high-
power electromagnetic signals in the microwave frequency
range.
12
![Page 13: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/13.jpg)
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
![Page 14: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/14.jpg)
14
![Page 15: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/15.jpg)
It is an Omni-directional antenna
15
![Page 16: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/16.jpg)
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
![Page 17: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/17.jpg)
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.
![Page 18: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/18.jpg)
Basic additions to mobile phone
a. Rectenna
b. Sensory Circuit
18
![Page 19: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/19.jpg)
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.
![Page 20: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/20.jpg)
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
![Page 21: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/21.jpg)
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
![Page 22: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/22.jpg)
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
![Page 23: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/23.jpg)
A Schottky barrier diode -- majority carrier device
Common diode -- minority carrier device.
Its reverse recovery time Trr is very short and shorter than
10 nS.
The forward voltage bias of the Schottky barrier diode is
under 0.6V.
This is a comparatively ideal diode, such as for a 1 ampere
limit current PN interface.
23
![Page 24: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/24.jpg)
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
24
![Page 25: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/25.jpg)
25
SENSOR CIRCUIT
Contd…
![Page 26: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/26.jpg)
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.
26
![Page 27: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/27.jpg)
Charging mobiles wirelessly
Saving time for charging
Wastage of power is less
Better than witricity
Get charged as we make call during long journey
27
![Page 28: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/28.jpg)
Radiation problems may occur
Network traffic may cause problems in charging
Charging depends on network coverage
Rate of charging may be of minute range
28
![Page 29: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/29.jpg)
“ WIRELESS CHARGING OF MOBILE
PHONES”
Use of rectenna and sensor in mobile phone could provide
new dimension in the revolution of MOBILE POWER
29
![Page 30: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/30.jpg)
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.
30
![Page 31: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/31.jpg)
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
31
![Page 32: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/32.jpg)
32
![Page 33: PPT on Wireless charging of mobile using microwaves](https://reader034.fdocuments.net/reader034/viewer/2022042422/55a665ad1a28abe11b8b4741/html5/thumbnails/33.jpg)
????
33