TTE’s bandpass filters are available for any center frequency from 500 Hz to 26 GHz.  For frequencies above or below that range please contact TTE for assistance.

Topologies & Features:

  • Bessel Filters – exhibit a constant time delay in the passband of the filter.
  • Butterworth Filters – are more selective than Bessel Filters and offer both monotonic passbands and monotonic stopbands.
  • Chebyshev Filters – have low ripple passbands and monotonic stopbands. The passband ripple is ±0.25 dB typical.
  • Combline Filters – are Chebyshev topology and have low ripple passbands and monotonic stopbands. The passband ripple is ±0.25 dB typical.
  • Combline 315P Filter – is from the Combline family and has a specific passband bandwidth of 1.5% Fo.
  • Elliptical Function Anti-Aliasing Filters – offer better selectivity than Chebyshev Filters. Passband ripple is ±0.25 dB typical. These filters exhibit poles and zeros in the stopband that are below the specified rejection level.
  • Gaussian Filters – are designed to pass a step function with zero overshoot and minimum rise. Similar to Bessel Filters they offer limited selectivity.

Notes:

TTE offers its passive filters in the smallest practical sizes available; PCB, SMT or connectorized (BNC or SMA) cases are typically utilized, depending on the specific filter design.

All of TTE’s products are “made in the USA”.  Most are delivered within 2 weeks.  Expedited lead times of 3-5 days are available on many products.  Please call 1-716-532-2234 (or 1-310-478-8224) or email tte@tte.com for assistance.  More information about TTE’s custom design expertise is provided in Capabilities.