yes
transmissions
A carrier reinsertion oscillator is an electronic circuit used in a radio receiver that is designed to receive single side band carried suppressed radio transmissions. As suggested by the name, in a single side band carried suppressed signal, the carrier signal is suppressed (not transmitted) to save power and/or bandwidth. Before the single side band carried suppressed signal can be decoded to extract the original audio signal, the carrier must first be reinserted. This must be done accurately, otherwise the recovered audio signal will be unintelligible.
A downlink signal; a Ka Band signal
A downlink signal A Ka Band signal
Frequency Modulation must have a carrier whereby the frequency can be modulated by the signal
The 'carrier' is the signal that's flowing from the antenna into your receiverwhen there's no talk, no music, no sound of any kind on the signal. That'swhen you hear nothing out of the radio, because the radio is built to catchand work with only the changes of the carrier ... the modulation.
Sound.More informationAfter a modulated carrier signal has been received through the radio's aerial, the radio de-modulates it to release the live sound as picked-up from microphones in the radio studio (or was taken from recordings), which was then used to modulate the carrier signal at the transmitter.De-modulation that is done by a radio receiver can be described very simply as "removing the carrier signal to produce the sound".
Sound.More informationAfter a modulated carrier signal has been received through the radio's aerial, the radio de-modulates it to release the live sound as picked-up from microphones in the radio studio (or was taken from recordings), which was then used to modulate the carrier signal at the transmitter.De-modulation that is done by a radio receiver can be described very simply as "removing the carrier signal to produce the sound".
If the modulating system is AM (Amplitude Modulation) then the amplitude of the carrier wave changes with the amplitude of the modulation. On a specrum analyser that shows up as frequency sidebands. If the frequency of the carrier waves depends on the amplitude of the modulating signal that is called FM (frequency modulation). On a spectrum analyser that shows up as sidebands also.
That's the "detector" or "demodulator" stage.
A: A radio transmission signal has an envelope where the carrier frequency are enveloped by the analog signal before demodulation. it can easily be seen by an oscilloscope
Check with your carrier to see if signal strength is weak in your area. You could also go to the carrier store to see if perhaps the Galaxy S5's radio is faulty.