Passive Filters

TTE’s passive filters are available for frequencies from 100 Hz to 26 GHz – and to 40 GHz in some instances.

Filter Types & Topologies:

  • Band Rejection Filters – Butterworth, Chebyshev and Elliptical Function
  • Bandpass Filters – Bessel, Butterworth, Chebyshev, Elliptical Function and Gaussian
  • Highpass Filters – Butterworth, Chebychev, and Elliptical Function
  • Lowpass Filters – Bessel, Butterworth, Chebychev, Elliptical Function and Gaussian

Key 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; passband ripple is ±0.25 dB typical.
  • Elliptical Function Filters – offer better selectivity than Chebyshev Filters. The passband ripple is  ±0.25 dB typical. These filters also 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.