The SM4A (M4A) is a double balanced mixer, designed for use in military, commercial, and test equipment applications. The
design utilizes Schottky ring quad diodes and broadband
ferrite baluns to attain excellent performance. This mixer
can also be used as a phase detector and/or bi-phase modulator
since the IF port is DC coupled to the diodes. Environmental
screening is available to MILSTD-883, MIL-STD-202, or
MIL-DTL-28837, consult factory.