The CHM2378a is a dual channel mixer. Each mixer cell is a balanced structure based on a six quarter wave ring. The nonlinear devices are high quality Schottky diodes providing low conversion loss and very low 1/f noise. This circuit is manufactured with the BESMMIC process: 1 µm Schottky diode device, air bridges, via holes through the substrate, stepper lithography. It is available in chip form.
