Concepts of certain
basic "Antenna Traps" in 5 Parts:
- To best understand just how any kind of "Trap"
behaves, we first need to look at both Inductive
and Capacitive effects in any kind of circuit.
- We need to realize the effect that an Inductive Element or
a Capacitive Element has on the "Length
of an Antenna".
- We need to understand how the combination of both the Inductor
and Capacitor behave as either a "Series
Resonant Circuit", or as a "Parallel Resonant Circuit".
- Then, we need to understand how either of these two Resonant
Circuits may be used as either a "Bandpass Filter",
or as a "Bandpass Reject Filter"
(known as a "Trap" type of a filter).
- Finally, we need to see how these are commonly used in an
Antenna System as "Band Traps".
An "Antenna Trap" is
simply a Resonant Circuit used to block certain frequencies
Inductors do not like Current
Capacitors do not like Voltage