Spacek Labs' passive frequency quadrupler, Model E-4X, has an input frequency range of 17.5 to 20 GHz generating an output frequency range of 70 to 80 GHz. This is a cost-effective frequency multiplier with similar models available from 18 to 110 GHz in complete waveguide output bandwidths from K-band to W-band. All designs are a balanced configuration to suppress undesired harmonics and are unconditionally stable for any input/output VSWR. To meet your needs, features can be added such as coaxial output adapters and additional filtering. MIL-spec or space-qualified units available.
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