Comparison of 6 Diode and 6 Transistor Mixers Based on Analysis and Measurement

Figure 1

(a) Schematics of the two-diode mixer. (b) Diode model for Figures 1(a), 2, 3, 4, and 5. (c) Model of the three-coil transformer tr3 for Figures 1(a), 2, 3(a), 4, 5, 6, 7(a), 8, 9, 10, and 11. Model parameters were optimized with the goals of inductance of one coil, when the others are both terminated by open circuit or one is shorted, and capacitance between ends of coils at the same side, all measured at 5 MHz.

(a)

(b)

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