If you have gotten a job to design low-noise amplifiers, or even if you are just a verry serious amateur, you should read this book. I usually work with thousands of volts, so getting a job to design an amplifier for nanovolts was a bit disorienting. Nevertheless, after reading this book, and spending some quality time in the design, I designed an LNA that hit its noise figure. Everything is laid out so logically, and the text is so complete, that the subtitle could be "LNA's for Idiots". I went from total newb to apparent expert in a few weeks. I wish all circuit design books were written this well.