Band pass Filter:
This
circuit is taken from the
Progressive Communications
Receiver in most of the recent ARRL Handbooks. Values for the
40 meter band are shown.
Regarding Tapped Capacitor
Impedance Transformation in LC
Bandpass Filters:
We often
use a pair of capacitors to
match impedances at the
termination ends of LC bandpass
filters. The circuit consists
of a shunt capacitor at the
termination followed by a series
capacitor connecting to the high
Z end of a parallel tuned
circuit.
Wideband Filter Only Has Two
Different Components:
Electronic Design -
Ideas for Design / Wideband
filters with bandwidths in
excess of an octave can be
created by cascading a high-pass
filter and a low-pass filter. In
this design idea, nine-pole
high-pass and low-pass filters
have been constructed using a
modified equal-element design.
A. . .