Question

Advantages of using coaxial cable as feeding method of antenna

Answer 1

Answer:

Explanation:

➨Due to skin effect, coaxial cable is used in high frequency applications (> 50 MHz) using copper clad materials for center conductor. Skin effect is result of high frequency signals propagating along outer surface of the conductor. It increases tensile strength of the cable and reduces weight.

➨The cost of coaxial cable is less.

➨The outer conductor in coaxial cable is used to improve attenuation and shield effectiveness. This can be further enhanced with the use of second foil or braid known as jacket (C2 as designated in the figure-1). The jacket is used as protective cover from the environment and makes overall coaxial cable as flame retardant.

➨It is less susceptible to noise or interference (EMI or RFI) compare to twisted pair cable.

➨It supports high bandwidth signal transmission compare to twisted pair.

➨It is easy to wire and easy to expand due to flexibility.

➨It allows high transfer rates with coaxial cable having better shielding materials.

Answer 2

1) The coaxial cable has high bandwidth.

2) Signal attenuation is less.