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Is carrier signal present at output of double side band suppressed carrier?
No, the carrier signal is not present at the output of double side band suppressed carrier. That is what suppressed carrier means. However, the receiver has enough information to regenerate the carrier if need be. The advantage of suppressed carrier mode is that more power can be deployed to the signal-carrying portion of the modulated carrier.
What is a carrier reinsertion oscillator?
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.
What is double side band full carrier?
yes
Difference between dsb lc dsb SC?
The difference between double side band long carrier (DSB LC) and double side band short carrier (DSB SC) is the is how the amplitude modulation (AM) is referenced in the carrier wave.
What is analog modulation?
Analog modulationIn analog modulation, the modulation is applied continuously in response to the analog information signal.Common analog modulation techniques are:Amplitude modulation (AM) (here the amplitude of the modulated signal is varied) Double-sideband modulation (DSB) Double-sideband modulation with unsuppressed carrier (DSB-WC) (used on the AM radio broadcasting band)Double-sideband suppressed-carrier transmission (DSB-SC)Double-sideband reduced carrier transmission (DSB-RC)Single-sideband modulation (SSB, or SSB-AM), SSB with carrier (SSB-WC)SSB suppressed carrier modulation (SSB-SC)Vestigial sideband modulation (VSB, or VSB-AM)Quadrature amplitude modulation (QAM)Angle modulation Frequency modulation (FM) (here the frequency of the modulated signal is varied)Phase modulation (PM) (here the phase shift of the modulated signal is varied)
Could a conventional PLL be designed to recover the suppressed carrier of DSB-SC signal?
I look to have a 'Yes' answer but it will likely be a big 'NO' instead. After searching for about a month on the internet, it seems I am the only one to know how to build a conventional PLL (VCO, phase comparator and an RC filter) that can recover the suppressed carrier if its input is DSB-SC signal *. Obviously when a local signal could be generated (from the two side-bands) in synchronous (frequency and phase) with the suppressed carrier, the demodulation process will become straightforward as in any synchronous detector. This was my project for the MS degree thesis. Then I implemented it later in my private communication links. I say private because I knew that no receiver exists which can demodulate their DSB-SC signals since I also let their suppressed carrier (at the source) vary in frequency in a rather wide band. So even the IEEE members around the world have no reference for such a detector concept! The irony is that since 30 years and in order to let its idea be known globally I had to pay a good amount of money first! So as I said above, your 'NO' for answer is expected and it will be right, because it seems I am the only one to know how to do it. Am I? And this is exactly the object of the question here; to find out if I am not. * DSB-SC (Double Side-Band Suppressed Carrier)
How do you calculate frequency range of double side band modulated signal?
Upper sideband = Carrier frequency + modulating frequencyLower sideband = Carrier frequency - modulating frequency
What is meant by single side band modulation?
Single side band suppressed carrier modulation is like amplitude modulation except that one of the sidebands is suppressed or filtered out. Each sideband carries the same though opposite, information, so suppressing the one sideband allows more power to be placed into the one remaining sideband. The downside, of course, is that the demodulation process is more complex.
What is a SSBSC signal?
Single Side Band Suppressed Carrier. This is a modification of AM (Amplitude Modulation) that both reduces required transmitter power and signal bandwidth. The carrier is first modulated by the signal the same as in ordinary AM, then is sent through a bandpass filter to remove one sideband and the carrier. To demodulate it and recover the original signal the receiver must reinsert the carrier using a BFO (Beat Frequency Oscillator) and Mixer.
Is FM legal on CB radio?
In addition to garden variety AM (double sideband, full carrier), Single Sideband may be used on CB, with full, reduced, or suppressed carrier.The purpose of these variations is to reduce interference on the CB channels, which have been jam-packed since the the 27 MHz Citizens Band was created almost 60 years ago.No. The only emission mode allowed to CB is AM voice.
What is a carrier wave?
A modulated carrier wave is the output of a modulator that includes the information of the signal that is applied to the carrier.When a signal typically a piece of music in the range of say 30Hz to 30KHz is applied to an AM modulator (not sure about FM or PM) with a carrier of say 3MHz the output consists of 4 packetsUpper Sideband (Carrier + Signal) 3.000003MHz to 3.03MhzLower Sideband (Carrier - Signal) .297MHz to .299997MHzCarrier 3MHzSignal 30Hz to 30KHzEither sideband in the case of Single Side Band (SSB) or Both (.297MHz to 3.03Mhz) in the case of Double Side Band (DSB) could be referred to as modulated carrier waves
What is the difference between carrier and band?
The carrier is the actual EM energy used for transmission. The band is a subset of a convenient (and arbitrary) human conception of the electromagnetic spectrum. It's analogous to a real pencil line (the carrier) drawn in an imaginary lane (the band) of an endless expanse of very real concrete (the electromagnetic spectrum).
