BASIC PRINCIPLES OF RADIO COMMUNICATION
Journal Title: Scientific Work - Year 2024, Vol 18, Issue 4
Abstract
Abstract Radio communication operates on the fundamental principles of transmitting and receiving electromagnetic waves that carry information across distances without the need for physical connections. At its core, radio communication involves the conversion of information into a radio signal, which is then transmitted through the air using electromagnetic waves of a specific frequency. The process starts with the generation of a radio frequency (RF) carrier wave, which is modulated with the input signal containing the information to be transmitted. This modulation can be achieved in several ways, including amplitude modulation (AM), where the amplitude of the carrier wave varies with the input signal, and frequency modulation (FM), where it's the frequency of the carrier wave that varies. Upon reaching its destination, the transmitted signal is captured by an antenna connected to a radio receiver. The receiver demodulates the signal, extracting the original information from the carrier wave. This is achieved through a process that effectively reverses the modulation step performed at the transmitter. The receiver must be tuned to the specific frequency of the transmitted signal to successfully retrieve the information. One of the critical aspects of radio communication is the selection of the transmission frequency, which affects the propagation characteristics and the range of the communication. Higher frequencies offer greater bandwidth and potential data rates but typically have shorter range and are more susceptible to line-of-sight limitations and atmospheric absorption. Lower frequencies, in contrast, can travel longer distances and are better at penetrating obstructions but offer limited bandwidth for data transmission. The principles of radio communication have been refined over the years to accommodate a growing demand for wireless communication services, leading to the development of various standards and technologies that enhance the efficiency, reliability, and security of radio communication systems. These advancements have facilitated a wide range of applications, from broadcasting and mobile telephony to satellite communication and wireless networking, demonstrating the versatility and enduring relevance of radio as a medium for communication.
Authors and Affiliations
Asad Rustamov , Tofiq Azimov , Majid Mahmudlu
Keywords
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- EP ID EP748635
- DOI 10.36719/2663-4619/101/256-261
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