Some advantages are:
to shift the frequency of information signal ,at the frequency domain to a higher frequency ...so the information can be transmitted to the receiver.
High frequency amplifier is a device which is tuned by high frequency. Tuned means the overlapping of generated frequency with that amplifier.
Transmission bandwidth depends on modulating signal frequency and carrier frequency
A few, at least. There are probably more. First, since the frequency is zero, reactive losses due to cable inductance are eliminated. Next, possible health risks due to alternating magnetic fields are reduced. Also, the non-trivial problem of syncronizing two power grids is eliminated. The DC is syncronously converted back to AC at the receiving end's phase and frequency, without regard to the generating end. Another possible benefit (from my point of view at least) is that HVDC systems are, to my knowledge, almost always run underground, eliminating unsightly transmission towers and lines.
To covert a high frequency to a low one, we use flip-flops.
-> frequency shift keying promotes long distance communication. ->it has high security. ->low noise ->efficiency is high. ->decoding of signal is easy.
the high frequency, it is in VHF band.
Frequency modulation have some advantages over amplitude modulation, FM is not sensitive to the amplitude noise, and have high efficient use of transmitted power
The disadvantage of frequency shift key is it requires high bandwidth. The advantages of it are that frequency shift keying promotes long distance communication, it has high security, low noise, efficiency is high, and decoding of signal is easy.
to shift the frequency of information signal ,at the frequency domain to a higher frequency ...so the information can be transmitted to the receiver.
High range of frequency that carries the message signals in transmission of data.after receiving the signals, the detector seperate the message and carrier .
One advantage for parallel transmission is the speed that the data can travel at, while one disadvantage for parallel transmission is the high cost of it
audio frequency
Sending out a pulse of high frequency radio waves involves transmitting electromagnetic radiation at a fast rate. This can be used for applications such as communication, radar systems, and medical imaging. The high frequency allows for fast transmission and reception of data or information.
The advantages of transmission media are it is easy to terminate, cheap cost of installation, and the high installed base. The disadvantages are the noise, they cover less distance, and may suffer interference.
The advantages of transmission media are it is easy to terminate, cheap cost of installation, and the high installed base. The disadvantages are the noise, they cover less distance, and may suffer interference.
The term coaxial comes from the inner conductor and the outer shield sharing ("co-") the same axis. It is often used as a high-frequency transmission line to carry a high-frequency or broadband signal but may also be used for frequencies as low as audio frequency.