Series and parallel RLC resonant circuits have long been the staple equivalent circuits for dipole and loop antennas despite being narrowband approximations. This paper shows how to make universal …

The small gap resonated HF loop is popular for portable QRP operations. In the previous Ionospherica we explored the bent dipole near the ground, and how its fields couple to the ground and to the iono …

For electrically short antenna, a matching circuit for the resonant condition is needed. Either a loading coil or a capacitive hat or a combination of both may be used. In this paper we first focus on the …

Model files and sample radiation patterns for Yagi designs by Justin Johnson, GØKSC (require EZNEC PRO/4 to reproduce the gain and other performance specifications listed) These files are located in …

In the analysis here the square loop is fed in the center of the bottom straight section, and is resonated by section. Figure 1B shows the far field radia-tion pattern in the horizontal plane.

When a resonant circuit is connected to the outside world, its total losses (let’s call them RP or GP) are combined with the source and load resistances, RS and RL. For example, Here is a parallel resonant …

Kits are available resonated or non-resonated, with chrome or black tips. Resonated systems utilize a resonator mounted in the center of the center of the system to reduce resonant frequencies from …