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Coax is normally used in high frequency applications due to its ability to shield the signal. The coax construction prevents radiation, while at the same time prevents noise pick up. It is the shielding that makes coax a better choice at higher frequency, however coax can be used as low as audio frequencies.
Lower frequency systems do not need the shielding due to the long rise times. They are not as sensitive to noise pick up and generally do not radiate.
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How t convert high frequency into low frequency?
To covert a high frequency to a low one, we use flip-flops.
What is alpha cut of frequency?
it is the frequency at which the current amplification drops 3dB below its low frequency value.
What is a padder capacitor?
Padders are a type of Capacitors which are used at low frequency end of the radio dial.
What is the use of capacitor before input of power supply AC?
They are used to offer a low impedence path to high frequency interference from switching sources such as fridges and thermostats. Also to curb radio frequency breakthrough.
What is h parameters transistor?
Hybrid Parameters are the values which is used to find FREQUENCY RESPONSE of a low frequency transistors. you may have doubt like why we are using only H-PARAMETERS why not HYBRID-PI models because..., h-parameters values are constant at low frequency moreover, at low frequency transition model we have assumed that the response of transistor to changes of input current or input voltage is instantaneous this is the reason why we had neglected shunt capacitances . as there were no shunt capacitances there is no chance of using hybrid-pi model. i hope you got answer for your question
What does 'coaxial cable' mean?
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.
What does coaxial mean?
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.
Where can I get a coaxial cable for a low price?
Purchasing from Amazon.com would provide you with the lowest price for the coaxial cable. They have many different brands and lengths of cable from which you may choose.
Why does tv coaxial cable not give shock?
The voltage is too low.
What is the error rate of coaxial cable?
The bit error rate is a standard transmission-error rate of a medium such as copper wire, coaxial cable, or fiber-optic cable. Coaxial cables have a low error rate that is generally 1 in 1 billion bps.
What is function of coaxial cable?
coaxial cable has a solid copper or copper-clad-steel centre conductor surrounded by a non-conductive dielectric insulating material. The dielectric is surrounded by foil shield/s and/or copper braid/s which form the outer conductor and also shield against electromagnetic interference (EMI). The outer conductor/shield is encased in a PVC jacket.
What does cables mean?
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.
What is the difference between baseband coaxial and broadband coaxial cable?
The difference between baseband coaxial and broadband coaxial cable is baseband coaxial technology uses digital signaling in which the cable carries only one type of digital signal. Where as the broadband coaxial technology typically transmits analog signals and is capable of transmitting multiple frequencies of data simultaneously.
What is the major factor that makes coaxial cable less susceptible to noise than twisted-pair cable?
A coaxial cable is shielded from electrical interference signals whereas UTP (Unshielded Twisted Pair) cable is not. The random twisting with which UTP is manufactured works very well, however, in locations where the interference levels are relatively low, because its method of construction ensures that any interference affects both wires in the pair equally. It should also be mentioned that STP (Shielded Twisted pair) cable is also available and is sometimes specified for LANs (Local Area Networks) instead of coaxial cable. But the much greater volume of coaxial cable sold means that coaxial cable prices have been kept very competitive with STP. As STP tends to be more tricky to install - its shield has to be very carefully and correctly terminated at each end - coaxial tends to be used more than STP where noisier-than-normal interference conditions are present at a particular site. Since the 1990s NIC (Network Interface Card or Component) equipment has had extra logic cicuits within it to reject ambient interference much more effectively than equipment which was designed in the previous 20 years, so nowadays UTP can be used more extensively in locations where only STP or coaxial cable would have had to be used before. So, in relation to LANs in normal non-industrial office and domestic buildings, this exam question is now almost obsolete! However coaxial cable is still necessary to carry LANs in difficult environments such industrial plants; hospitals; undergound railway and road tunnels and mines; on board ships and aircraft, etc. and must also be used to carry signals for radio, televison, video and other applications which run at much high frequencies and bandwidths than LANs.
What are the characteristics of broadband coaxial cable?
Low interference, high frequency bandwidth and something else... The main advantages of coaxial cable are # Good shielding. This almost eliminates interference from external electromagnetic fields; it also reduces radiation from the cable to almost zero. Only a waveguide is superior in this respect, and that can be used only in the microwave region. # Good bandwidth and low loss. These two are grouped together because they enter into a three-way relationship with cost. One can extend frequency response right into the microwave region, and achieve lower and lower loss figures; you just have to pay for it. Again, waveguide can better microwave performance and loss figures, but at high cost in weight as well as money. # Good power handling. # Flexibility. Co-ax can go round corners without any problems. Most other transmission lines have problems with a change in direction. # A characteristic impedance which is known, uniform all along the cable and stays the same when the cable is curved. # Can be run anywhere without being affected by its surroundings; it can be run underground or underwater provided it has a "non-contaminating" outer jacket.
What is a high end frequency scanner?
A: It is a terminology to imply that the scanner will be used at the hi end of frequency as opposed to low frequency
Why are coaxial cables used for cable TV transmission and normal wires used for electricity transmission?
The simplest explanation (and therefore not completely accurate, but it will help you understand what happens) is that as the frequency of an AC signal increases the less able a wire is to contain it.at very low frequencies, including those of powerlines, the current flows easily through the entire diameter of the wireat intermediate frequencies, up to about the AM radio band, the current avoids the center of the wire, only flowing through its surfaceat high frequencies, including those used for TV, a significant amount of the AC signal escapes from a wire as electromagnetic radiation - the shield on a coaxial cable "reflects" this electromagnetic radiation back to the center conductor, preventing its lossat microwave frequencies AC will not follow a wire at all and the electromagnetic radiation is directed around through metal pipes called waveguides (analogous to a coaxial cable but without a center conductor, only the outer shield to reflect the electromagnetic radiation)
