Included in this discussion are guidelines for digital system quality analysis. Chapter 3 is devoted to receiver system planning so that the designer can make appropriate tradeoffs among conflicting performance characteristics. It includes sections on filter design for selectivity, on spurious response locations, and on tracking of variable-frequency circuits. The noise correlation matrix is also discussed. Chapter 4 covers antennas and antenna matching, including active antennas.
Active antennas can be extremely useful in some applications, but are frequently overlooked.
Chapter 5 surveys the design of amplifiers and gain-control techniques. Extensive data is provided on the analysis of gain-control loops and digital IF processing. Chapter 6 provides a discussion of various mixer types. The many design considerations for these important circuits are discussed in detail. Extensive analysis of the Gilbert cell mixer is also included to demonstrate CAD design capabilities.