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 packets
Upper Sideband (Carrier + Signal) 3.000003MHz to 3.03Mhz
Lower Sideband (Carrier - Signal) .297MHz to .299997MHz
Carrier 3MHz
Signal 30Hz to 30KHz
Either 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
RF carrier waves are modulated with the data to be transmitted, typically using techniques like amplitude modulation, frequency modulation, or phase modulation. These modulated signals are then transmitted through the RF channel. To transmit large amounts of data, techniques like increasing the carrier frequency bandwidth, using more advanced modulation schemes, and implementing error correction coding can be employed to achieve higher data transmission rates over the RF carrier waves.
A demodulator detects a modulated wave by separating the modulating signal from the carrier wave. This is done by reversing the modulation process applied to the carrier wave to extract the original signal that was modulated onto it. Different demodulation techniques are used depending on the modulation scheme employed.
Modulation is where an electronic signal (base) is combined with another electronic signal (carrier).The base could be audio, video or digital. The carrier is the frequency that a receiver (radio or television) is tuned to.The modulated wave is the result of this combination.
Waves can carry information through their properties such as frequency, amplitude, and phase. By varying these properties, information can be encoded and decoded at the receiving end. For example, in telecommunications, information is modulated onto a carrier wave through changes in these properties, allowing it to be transmitted and received.
A carrier is a high-frequency signal that carries information on a radio wave. The carrier frequency is modulated to encode audio signals, which are then transmitted and decoded by the radio receiver to produce sound. The carrier frequency determines the station you're tuning into on the radio.
For transmission through a radiowave.
RF carrier waves are modulated with the data to be transmitted, typically using techniques like amplitude modulation, frequency modulation, or phase modulation. These modulated signals are then transmitted through the RF channel. To transmit large amounts of data, techniques like increasing the carrier frequency bandwidth, using more advanced modulation schemes, and implementing error correction coding can be employed to achieve higher data transmission rates over the RF carrier waves.
yes for transmission of the signal to take place smoothly,digital tranmission needs to be modulated over a carrier
It gives frequency modulated signal
Carrier Wave: A carrier wave is a high-frequency electromagnetic wave that is used as the "carrier" or the base signal in a modulation process. It is typically a pure sine wave with a constant frequency and amplitude. The carrier wave by itself does not carry any information; it serves as a vehicle to carry the information from one location to another. In AM and FM radio broadcasting, the carrier wave is the primary signal transmitted by the radio station. Modulated Wave: A modulated wave is the result of combining the carrier wave with an information signal, such as an audio signal or data. Modulation is the process of varying the characteristics of the carrier wave (either its amplitude or frequency) in accordance with the information signal. There are two common types of modulation: Amplitude Modulation (AM) and Frequency Modulation (FM). In AM, the amplitude of the carrier wave is varied in proportion to the amplitude of the information signal. This variation encodes the information onto the carrier wave. In FM, the frequency of the carrier wave is varied in proportion to the amplitude of the information signal. This variation encodes the information onto the carrier wave. The modulated wave contains the information that needs to be transmitted, and it can be demodulated at the receiving end to retrieve the original information.
There are two types of modulations. They are amplitude modulation and frequency modulation. In AM, amplitude of the signal is modified. In FM, frequency is getting modulated. Frequency modulated with carrier waves are transmitted and received by receivers without any distortion.
carrier signal- use for the purpose of conveying information. modulating signal- causes variations in some characteristics of carrier signal. modulated signal - carrier signal after altration in its characteristics is called modulated signal. example- if you want to see an object (suppose it is an modulating signal),you need light(light is carrier signal) and when light will reflect on object you will be able to see if (that is modulated signal)
All communication systems use electromagentic waves which by the law of Superposition of Waves travel independently in any meadium and hence do not interfere but if the frequencies tend to match then the carrier waves with amplitude modulation are more affected and give poor quality sound at the receiving end than the frequency modulated carrier waves.
recovering the information content from modulated carrier wave
Amplitude, Frequency and Phase
A demodulator detects a modulated wave by separating the modulating signal from the carrier wave. This is done by reversing the modulation process applied to the carrier wave to extract the original signal that was modulated onto it. Different demodulation techniques are used depending on the modulation scheme employed.
low level amplitude modulation occurs when the carrier signal is first modulated and then amplified,whereas in high level modulation,the carrier signal is first amplified and then is modulated.