| 摘要 |
An improved wideband double balanced GaAs mixer is presented and includes a plurality of FETs which are operative to couple a plurality of input signals to a diode ring quad wherein the signals are mixed, producing output IF signals composing multiples of the sum and difference frequency of the alternating input signals. In a first embodiment, a first pair of FETs is coupled to an input RF signal, and a second pair of FETs is coupled to an input LO signal. The first pair of FETs is driven in phase by the RF signal, while the second pair of FETs is driven in push-pull by the LO signal. This second pair of FETs is operative to alternately switch opposite sides of the diode ring quad into a conductive state wherein the mixing of the RF and LO signals take place.
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