The characteristic impedance of coaxial cables was specified at around 77 ohms in order to match the characteristic impedance of these devices in free space. For 10 points each:
[10h] Name these devices which despite the theoretically matching impedances are typically connected to coaxial cables with a balun because of the necessity for balanced line inputs for their common center-fold variant.
ANSWER: dipole antenna [prompt on dipole or antenna]
[10m] This physicist patented an early coaxial cable, in addition to developing the telegrapher’s equations. Like Arthur E. Kennelly, he predicted the existence of the ionosphere.
ANSWER: Oliver Heaviside
[10e] This kind of material forms the inside of a coaxial cable, surrounded by a dielectric separator and then the shield. This kind of material is the opposite of an insulator.
ANSWER: conductors
<Benjamin McAvoy-Bickford, Physics>