DELAY EQUALIZED LOWPASS
FILTERS tabulated on this page are the result of many years of
experience in the use of specialized computer programs for the design
and optimization of Delay Equalized Filters. By using modern digital
computers, the composite behavior of the filter and equalizer are
optimized to yield the ultimate in both amplitude, delay and phase response.
This type of filter is ideally suited for use as an Anti-Aliasing
Filter in analog to digital conversion. When used as a Post-Aliasing
Filter in digital processing applications, the passband can be shaped
to correct for
sin x/x amplitude distortion.
The filters tabulated below represent a widely used
group. However, many other combinations of stopband ratio, impedance,
delay distortion and size are possible. Two stopband ratios are listed
in the table below, 1.375 @ 45dB and 1.575 @ 60dB.
Units normally supplied in metal cans for printed
circuit mounting. SMA connectors same size. BNC connectors may require
Amplitude, phase and/or delay matching between filters
is also available.
CALL FACTORY FOR SPECIAL SIZES AND DELIVERY
ORDER ANY CUT-OFF FREQUENCY FROM 1KHz TO 20MHz.
INTERPOLATION BETWEEN TABULATED DATA ALLOWABLE.
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