VLSI for Wireless Communication by Bosco Leung

Author:Bosco Leung
Language: eng
Format: epub, pdf
Publisher: Springer US, Boston, MA

5.8 Conversion Gain in Single-Ended Sampling Mixer

We proceed by developing the conversion gain with V lo not switching. Then we develop the conversion gain with V lo switching.

5.8.1 Vlo not Switching Case

The model for the single-ended sampling mixer as described by Figure 5.10 is developed in Figure 5.15.

Fig. 5.15Conversion gain model for the single-ended sampling mixer

In this figure the channel resistance is modeled as a linear resistor R on in series with an ideal switch. The nonlinear junction capacitor C db is lumped together with C load and is denoted as C. We first develop the conversion gain by assuming that the switch is on. Hence G c becomes

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