Page 292 - Complete Wireless Design

Filter Design

Filter Design 291

Figure 6.34 Values as calculated
for BPF half-section.

Figure 6.35 (a) Two single half-sections; (b) combining the shunt tanks.

Figure 6.36 Completed 6-pole bandpass filter.

uted filters may display reentrant modes that will destroy their stopband
attenuation at certain repeating harmonic frequencies.
Distributed bandpass filter structures cannot merely be a distributed copy
of a lumped LC filter design. In order to obtain a narrow bandpass, with
acceptable in-band ripple and insertion loss, specialized structures must be

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