Antenna Matching Network. As a result the antenna needs a matching network that operates over a 110 mhz bandwidth that is centered at 350 mhz. Design the matching network the matching network must operate between 295 mhz and 405 mhz so you choose a bandpass topology for the matching network which is shown here.
A smith chart can be used to determine matching network lumped element values. The inductor blocks the rf from getting back to the battery. Ham radio end fed antenna with a 1 64 matching network multiband end fed antennas 3 5 30mhz this is a 200 watt pep step up transformer for end fed full and half wave antennas without radials designed as a 200 watt pep upgrade by pa0ejh for the originaly par electronics designed 25 watt hf endfedz multiband end fed antenna.
When it comes to actual antennas in the real world much of our knowledge is empirical.
C1 is there to prevent the dc for the amplifier from getting to the antenna. We know very broadly theories that explain how a point charge radiates maxwell s equations the need for matching microwave theory and how dipole antennas drawn on paper radiate the way they do but these laws are nearly useless in solving the real world problem of antenna design. Ham radio end fed antenna with a 1 64 matching network multiband end fed antennas 3 5 30mhz this is a 200 watt pep step up transformer for end fed full and half wave antennas without radials designed as a 200 watt pep upgrade by pa0ejh for the originaly par electronics designed 25 watt hf endfedz multiband end fed antenna. Make sense of antenna design and matching networks.
