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let me explain it : The transfer of signals occupying a specified frequency band, such as a channel or group of channels, from one portion of the frequency spectrum to another, in such a way that the arithmetic frequency difference of signals within the band is unaltered. One key operation is the frequency translation of a signal spectrum from one center frequency to another. Conversions between baseband and bandpass representations (modulation and demodulation) are special cases of this. Conceptually, the most simple case is the (complex) I/Q-mixing. Here the input sequence is multiplied by a complex exponential signal corresponding to the local oscillator (LO) frequency fLO.
(2.1)
It follows directly from the properties of Fourier transform that I/Q mixing causes a pure frequency translation of the signal spectrum:
(2.2)
Complex mixing used to produce pure frequency translation of input spectrum.
What else can I help you with?
How speed of a squirrel cage induction motor can be varied?
There are two ways of changing the speed of AC motors,by altering the frequency or the number of poles in the motor. An increase in frequency of the supply voltage to the motor will cause it's speed to increase while reducing the frequency will causes the motor speed to drop. This is the method exploited by Variable Speed/Frequency Drive. The second method of changing the number of motor's stator poles is the difficult. The manufacture must design the motor such that the number of the motor's pole in operation can be increased or reduced. Increasing the number of poles increases the stator flux density which decreases the speed. Decreasing the number of poles does the opposite. This method is typically found in two speed motors and it's rarely used compared to VSDs.
What method can be used to control the speed of rotation of a 3 phase induction motor?
USE VARIABLE SPEED DRIVE (VSD) OR ALSO CALLED VARIABLE FREQUENCY DRIVE (VFD). THE PRINCIPLE IS TO VARY OR CHANGE THE FREQUENCY WITHOUT AFFECTING THE VOLTAGE. THIS IS ONE SOLUTION TO ENERGY MANAGEMENT AND COMBINED TO BUILDING AUTOMATION SYSTEM OR BUILDING MANAGEMENT SYSTEM.
What causes sideband frequency?
If you subtract from the carrier frequency the frequency of the tone that modulates it, then filter out the carrier frequency, then you have a lower sideband frequency. If you add to the carrier frequency, filter out the carrier, then you have an upper sideband frequency.
What is frequency sensitivity?
the amount of frequency change in the carrier frequency per unit amplitude change in the message signal is the frequency sensitivity this term comes in the frequency moulation
What is frequency response?
Frequency response is the measure of the frequency of the output a device gives in response to a stimulus that it receives. The frequency response is a characteristic of the device.
Deacribe the special menu about the food?
it is delicous
What is the Tagalog of frequency?
Tagalog translation of FREQUENCY: dalas
Explain the method of translation of historical institutional term?
"Explain the method of translation of historical institutional term?" Institutional term and National institutional term? "Explain the method of translation of historical institutional term?"
Briefly deacribe the structure of a cell membrance?
What type(question mark).
What is the Difference in relative frequency and percentage frequency?
Relative frequency is a method of calculating the frequency of an event. Percentage frequency is a way of presenting the frequency of an event.
What is the latin translation for the word method?
The word method can be translated as ratio or modus.
How do you say method in spanish?
Translation: Método
What what purposes do frequency translation served in communication?
Frequency translation in communication allows for tasks such as frequency shifting, filtering, and mixing signals to reduce interference, facilitate signal processing, and enable compatibility between different systems. It also helps in converting signals to different frequencies for transmission and reception in radio communication systems. Additionally, frequency translation enables frequency synthesis, allowing for the generation of stable and accurate frequencies for various communication applications.
Which device can be use by bluetooth?
frequency synchronization method.
What is the double translation method?
The double translation method involves translating a document from one language to another, and then back to the original language to check for accuracy and maintain the meaning of the content. This method helps identify any errors or discrepancies that may occur during the translation process.
What does FM?
Frequency Modulation. It is the method of propagating the electromagnetic wave.
What is the method used to calculate recombination frequency in genetic studies?
The method used to calculate recombination frequency in genetic studies is called the mapping function, which involves analyzing the frequency of recombination events between genes on a chromosome to determine their relative positions.
