Podcast
Questions and Answers
What does an SWR reading of 1:1 indicate?
What does an SWR reading of 1:1 indicate?
- The best impedance match has been attained (correct)
- The signal is not properly reflected
- Low transmission-line efficiency and high reflected energy
- The transmitter is damaged
What is impedance matching used for?
What is impedance matching used for?
- Increasing signal loss
- Decreasing transmitter efficiency
- Increasing reflected energy
- Maximizing power transfer (correct)
What is a quarter-wave impedance transformer used for?
What is a quarter-wave impedance transformer used for?
- Attaining the highest possible SWR reading
- Matching impedances (correct)
- Increasing the signal loss
- Decreasing the input impedance
What is the main function of a terminal impedance in a quarter-wave impedance transformer?
What is the main function of a terminal impedance in a quarter-wave impedance transformer?
What happens if there is a high SWR value?
What happens if there is a high SWR value?
What is the characteristic impedance of RG-8A/U?
What is the characteristic impedance of RG-8A/U?
What type of cable transmission media consists of two identical wires running parallel to each other, insulated primarily by an air gap between them?
What type of cable transmission media consists of two identical wires running parallel to each other, insulated primarily by an air gap between them?
Which type of cable transmission media uses a two-conductor flat cable to carry radio frequency (RF) signals as a balanced transmission line?
Which type of cable transmission media uses a two-conductor flat cable to carry radio frequency (RF) signals as a balanced transmission line?
What is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility?
What is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility?
Which type of cable transmission media surrounds the wire with a metallic braid or sheathing to reduce interference?
Which type of cable transmission media surrounds the wire with a metallic braid or sheathing to reduce interference?
What type of cable consists of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric?
What type of cable consists of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric?
What is the characteristic impedance of a coaxial line with a polyethylene dielectric (ϵr = 2.3), if the diameter of the inner conductor is 3 mm and inside diameter of the outer conductor is 10 mm?
What is the characteristic impedance of a coaxial line with a polyethylene dielectric (ϵr = 2.3), if the diameter of the inner conductor is 3 mm and inside diameter of the outer conductor is 10 mm?
