| 摘要 |
Mixer-systems comprising gain-blocks (1-4) and switches (5-8) have a flexibility depending upon their configuration (insight) and are made more flexible (basic idea) by supplying data input signals to the gain-blocks (1-4) and oscillation signals to the switches (5-6) for switching couplings between the gain-blocks (1-4). A switch (5-6) comprises a switch-transistor and a gain-block (1-4) either comprises a gain-block-transistor or comprises five gain-block-transistors for increasing the linearity of the mixer-system. The switches (5-6) have main electrodes which in the balanced situation are all coupled via four impedances (13-16) to the gain-blocks (1-4). In the single ended situation two main electrodes are coupled via two impedances (13,15,18,20) to the gain-blocks (1-4) and two others are coupled directly to the gain-blocks (1-4). By introducing further switches (7-8) parallel to the switches (5-6), harmonics can be suppressed. The basic mixer-system has an improved performance which can be further improved easily.
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