Wainwright Instruments GmbH has been developing RF & microwave filters since 1979. They design and manufacture lowpass, highpass, bandpass, band reject, notch, diplex and multiplex, as well as manually and digitally tunable filters and absorptive filters. They specialize in L/C (Cauer, Chebyshev and Butterworth), cavity, waveguide and helical designs. The company offers both standard and custom filters.