RF Transmitters — WSU

RF Transmitters — WSU - RF Transmitters -...

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RF Transmitters Radio Frequency (RF) Transmitters Transmitter Operation: Pulsating AC current is run through radio transmitter antenna wires. The pulsating AC current pulsates in unison with the sound or signal being broadcast. The pulsating AC current creates a pulsating magnetic field which, like on a bar magnet, the field strength is very strong right next to the transmitter and gets weaker further away from the transmitter. The higher the power used to transmit, the farther away the signal can still be picked up by the antenna through electromagnetic induction. Each radio transmitter has it's own broadcast frequency, this means that there are dozens, if not hundreds or thousands of different frequencies of radio signals being broadcast at all times in any one location. Wireless phones use one of three different frequencies to broadcast and receive signals. Analog signals use 800 MHz, digital cellular signals use 900 MHz, and digital PCS signals use 1.8GHz. Your wireless phone may use one or more of these frequencies as needed.
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This note was uploaded on 02/06/2012 for the course AUSV 1320 taught by Professor Johnkelly during the Winter '12 term at Weber.

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RF Transmitters — WSU - RF Transmitters -...

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