| 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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