DELAY EQUALIZED SHARP
CUT-OFF 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 and delay 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
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, 1.22 @ 45dB and 1.32 @ 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 250MHz. INTERPOLATION
BETWEEN TABULATED DATA ALLOWABLE
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