The unique design of the termination insensitive
mixer (TIM) enables it to apply high reverse voltage
to diodes during their “off” phase, in the LO cycle.
This allows for higher power level performance with
minimum distortion. In addition the TIM has internal
loads that provide a good match and also absorb
mixer generated LO frequency terms. Combined,
these features give the mixer its insensitivity to
external mismatches, plus superior VSWR.