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Electronics Projects with the ESP8266 and ESP32: Building Web Pages, Applications, and WiFi Enabled Devices
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Electronics Projects with the ESP8266 and ESP32: Building Web Pages, Applications, and WiFi Enabled Devices

by Neil Cameron
December 2020
Intermediate to advanced
703 pages
12h 21m
English
Apress
Content preview from Electronics Projects with the ESP8266 and ESP32: Building Web Pages, Applications, and WiFi Enabled Devices
© Neil Cameron 2021
N. CameronElectronics Projects with the ESP8266 and ESP32https://doi.org/10.1007/978-1-4842-6336-5_15

15. Radio frequency communication

Neil Cameron1  
(1)
Edinburgh, UK
 
In telecommunications and signal processing, information is transferred on a radio carrier wave by either modulating the amplitude or the frequency of a radio carrier wave. Radio waves have frequencies between 20 kHz and 300 GHz, corresponding to wavelengths of 15 km to 1 mm, and travel at the speed of light. Radio waves with frequencies above 300 MHz are termed microwaves. For Radio Frequency (RF) communication with amplitude modulation (AM), the transmission amplitude is proportional to the signal amplitude, and the transmission frequency is constant (see Figure ...
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Publisher Resources

ISBN: 9781484263365Purchase LinkPublisher Website