Parallel Transmission And Serial Transmission And Their Advantages

Some of the more popular communication technologies currently in use and in development are described next along with their advantages and disadvantages. Parallel-to-serial and serial-to. Jump to Comparison with serial links - Speed: Superficially, the speed of a parallel data link is equal to the. In contrast, most serial communication must first be. One huge advantage of having fewer wires/pins in a serial cable is the.

There actually isn't any advantage or disadvantages of using a balanced verse unbalanced transmission line. Selection of transmission line is based upon several factors: 1) required transmission line impedance between the source and the receiver (load), 2) application of the transmission line (RF, a udio, digital data, etc.), and 3) transmit/receive port design. Download ohmboyz vst full crack version.

Factor 1, 2, and 3 examples. Radio frequency energy transfer from a (HF, VHF, UHF) transmitter to an antenna requires a transmission line impedance that equals the output source impedance and the antenna's input impedance. The transmitter output source impedance is typically 50 - 75 ohms and the antenna input impedance is usually the same. Real life examples are amateur radio, commercial broadcast radio and television, citizen band radio, etc. Therefore, a 50 or 75 ohm transmission line is needed to couple the RF energy between transmitter and antenna. Coaxial cables are used to transfer RF transmitted energy from the transmitter to a receiver, and coaxial cables are unbalanced transmission lines.

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Another even more familiar example is your cable television connection. Cable television industries use 75 ohm coaxial cable, therefore, the television's cable input port had to designed by the manufacturer to accept an unbalanced 75 ohm coaxial cable. Hence, the television's input impedance is 75 ohms. In the case of transmission of digital data, CAT 5 cables are used because of their relatively low loss and excellent rejection of mutual inductive coupling of external noise and signals onto the cable.

This is achieved by the use of twisted pair cable with external shielding. CAT 5 cable is a balanced transmission line. CAT 5 cable characteristic impedance is 100 ohms. The digital data transmitter and receivers may have been designed to accommodate CAT 5 transmission medium in this case, hence, the output source impedance and receiver input impedance is 100 ohms. By the way, coaxial cable has excellent rejection of external RF signals and other potential sources of noise because of its design as well. The coaxial cable inner conductor is surrounded by a braided shield along the entire length of the cable.

Therefore, signal attenuation characteristics and noise rejection capabilities are not dependent upon whether or not the transmission line is balanced or unbalanced. Excellent signal transmission characteristics can be achieved from both balanced and unbalanced transmission lines. Back in the old days when television reception was dependent upon a set of rabbit ears or an external TV antenna mounted on the roof, called a log-periodic antenna, the transmission line connecting the antenna to the TV receiver was a 300 ohm parallel conductor line.