| 摘要 |
<p>This invention relates to balanced mixers with respect to their output stages, by making the differential mixer output (A, B) a single-ended output (C) without a matching transformer. To that purpose, a transistor current mirror is used in which, the collector of each current mirror transistor (Tr1, Tr2) is coupled to one of the two branches (A, B) of the differential output of the mixer and the output (C) of the current mirror is the collector of the current mirror transistor (Tr2) coupled as an amplifier. The circuitry can be used in all balanced transistor mixers, provided that both sides of the differential output are available for use.</p> |
