Engineering e-Bookshelf
Computer Engineering:
ADC / DAC. Often one of the last or first steps in getting from real-world to digital processor.
DDS direct digital synthesis. Generate modulated signals.
Electrical Engineering:
“The Design of CMOS Radio-Frequency Integrated Circuits” by Thomas Lee. Written in inimitable affable style. Expects knowledge of discrete RF circuits and teaches you how to make ICs. High used price testament to staying power.