1. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 1

2. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 2

3. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 3
 WHAT IS SPECTRUM:-A band of colours produced by
separating into parts with different wavelength.
 The spectrum which contains electric field and magnetic
field having rectangle to each other is know as
electromagnetic spectrum.
 The frequency range from 2GHz to 300GHz which is
allowed to transmit in is called microwave spectrum.

4. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 4
 Microwave means the frequency which travels a large
distance in a µms.
 Microwaves are good for transmitting information from
one place to another because microwave energy can
penetrate haze, light rain and snow, clouds, and smokes.
 The wave length of this can be measure in centimeters.
 Microwave means the frequency which travels a large
distance in a µms.
 Microwaves are good for transmitting information from
one place to another because microwave energy can
penetrate haze, light rain and snow, clouds, and smokes.
 The wave length of this can be measure in centimeters.

5. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 5

6. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 6
 In the output side we use a important device that is
MAGNETRON which is gives high power output which is
required in communication.
 There is a cavities in the input side which is controls the
output frequency.
 A circulator is a another part of the transmitter side which
helps to transmit the microwave from transmitter side to
receiver side.
 In the output side we use a important device that is
MAGNETRON which is gives high power output which is
required in communication.
 There is a cavities in the input side which is controls the
output frequency.
 A circulator is a another part of the transmitter side which
helps to transmit the microwave from transmitter side to
receiver side.

7. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 7
 In the receiver side we used two important device. One is
rectenna and other is a simple sensor circuit.
 The rectenna is used to convert the microwave energy
into DC electricity.
 A simple rectenna can be constructed from a Schottky
diode placed between antenna dipoles.
 The diode rectifies the current induced in the antenna by
the microwaves.
 In the receiver side we used two important device. One is
rectenna and other is a simple sensor circuit.
 The rectenna is used to convert the microwave energy
into DC electricity.
 A simple rectenna can be constructed from a Schottky
diode placed between antenna dipoles.
 The diode rectifies the current induced in the antenna by
the microwaves.

8. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 8
THE WHOLE SETUP LOOKS LIKE THIS:-

9. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 9
 The study is done that use of bridge is better than a single
Schottky diode.
 But this purpose is achieved low cost microwave rectifier
with single Schottky diode for low and high power level
has a good performance.
 Here the input impedance is matching with the frequency
2.45GHz and increase the sensitive at low level of power.
 The study is done that use of bridge is better than a single
Schottky diode.
 But this purpose is achieved low cost microwave rectifier
with single Schottky diode for low and high power level
has a good performance.
 Here the input impedance is matching with the frequency
2.45GHz and increase the sensitive at low level of power.

10. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 10
 It is a simple circuit, which detects if the mobile phone
receives any message signal.
 The sensor circuit is required as the phone has to be
charged as long as the user is talking.
 Here a simple powerful F to V converter LM2907 is used
to serve our purpose, which is act as a switch for
triggering rectenna circuit to ON.
 Thus the mobile phone beings to charge using the
microwave power.
 It is a simple circuit, which detects if the mobile phone
receives any message signal.
 The sensor circuit is required as the phone has to be
charged as long as the user is talking.
 Here a simple powerful F to V converter LM2907 is used
to serve our purpose, which is act as a switch for
triggering rectenna circuit to ON.
 Thus the mobile phone beings to charge using the
microwave power.

11. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 11
1.The general block diagram of LM2907 is given
bellow...

12. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 12
 This paper successfully demonstrates a novel method of
using power the microwave to charge the mobile phones
without the use of wired chargers.
 The use of rectenna and a sensor in a mobile phone
could provide a new dimension in the revelation of
mobile phone.
 This paper successfully demonstrates a novel method of
using power the microwave to charge the mobile phones
without the use of wired chargers.
 The use of rectenna and a sensor in a mobile phone
could provide a new dimension in the revelation of
mobile phone.

13. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 13
 http://www. Seminar projects. COM Thread/wireless
-charging-of-mobile-phone-using microwave?
page-3# iXzz2jdAvagH6
 http://www. Seminar projects. COM Thread/wireless
-charging-of-mobile-phone-using microwave?
page-3# iXzz2jdAvagH6

14. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 14
COLLECTED & DESIGNED by SAMARENDRA TRIPATHY

15. UCPENGINEERINGSCHOOL,BERHAMPUR-10
Department of Electronics and Tele Communication Engineering Roll No : 3046 15COLLECTED & DESIGNED By SAMARENDRA TRIPATHY