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Radio communication and the mobile phone
- 1. Radio Communication and the Mobile Phone A Wonderful Presentation by Gareth Dakin
- 4. This is measured in Hertz (Hz)
- 6. The carrier wave is produced by the transmitter as a sine wave
- 8. At any instant the amplitude of the carrier wave is made proportional to the size of the electrical modulating signal
- 10. Radio frequency signals are transmitted from the phone to the nearest base station
- 11. Incoming signals are sent from the base station to the phone at a slightly different frequency
Notas do Editor
- http://www.fmd.qut.edu.au/campus_services/cleaning/waste_disposal/mobile_phone.jsp
- http://www.hardwaresphere.com/2009/06/12/nokia-to-charges-phone-via-radio-waves-in-201x/http://www.geotauaisay.com/2009/06/nokia-is-coming-up-with-new-technology-to-charge-mobiles-with-radio-waves/
- http://www.ieeeghn.org/wiki/index.php/Radio_Waves
- http://www.e-blacktech.com/telephoneservice/cellphones.html