Conversion Scheme a. Design the first mixer stage of a receiver that converts an RF signal centered in the 108– 120 MHz range to a 170 MHz IF. There are two solutions (i.e., there are two possible LO...

Conversion Scheme a. Design the first mixer stage of a receiver that converts an RF signal centered in the 108– 120 MHz range to a 170 MHz IF. There are two solutions (i.e., there are two possible LO ranges). Please find both LO ranges, and fill in the frequency allocation diagrams in Figure 8-68. This problem requires a tunable LO. Find:

Figure 8-68

• Im1Low and Im1Hi: the image frequencies associated with LO1

• Im2Lowand Im2Hi: the image frequencies associated with LO2

Don’t assume that the drawing above is accurate with respect to frequency. In other words, the solution may require two bands to overlap when the drawing above doesn’t show them overlapping. b. Which, if any, conversion scheme results in a frequency inversion?