Your search for "Mixer" revealed the following:

Waveguide Balanced Mixer WR-10 From 75 GHz to 110 GHz | IF from DC to 20 GHz UG-387/U-M Flange W Band

Waveguide Balanced Mixer WR-12 From 60 GHz to 90 GHz | IF from DC to 10 GHz UG-387/U-M Flange E Band

Waveguide Sub-Harmonic Mixers WR-10 From 75 GHz to 110 GHz | IF from DC to 15 GHz UG-387/U-M Flange W Band

Waveguide Sub-Harmonic Mixers WR-12 From 60 GHz to 90 GHz | IF from DC to 10 GHz UG-387/U-M Flange E Band

2.92mm Fixed Attenuator ｜ 2 Watts ｜ Up to 40GHz ｜ 1-9dB ｜ 10dB ｜ 20dB ｜ 30dB Attenuation value