One book that may help bridge the gap between technical and engineering levels is "Practical Electronics for Inventors" by Paul Scherz and Simon Monk. This book provides a comprehensive introduction to the concepts and techniques of practical electronics, including working with microcontrollers, sensors, and other components. It also includes many hands-on projects and examples to help readers apply their knowledge and develop their skills.
Another book that may be useful is "The Art of Electronics" by Paul Horowitz and Winfield Hill. This book is considered a classic in electronics and is known for its clear explanations and practical approach. It covers a wide range of topics, including circuit design, signal processing, and microcontrollers, and includes numerous examples and exercises to help readers understand and apply the concepts.
A third suggestion is "Getting Started in Electronics" by Forrest M. Mims III. This book is designed for beginners and provides a clear and easy-to-understand introduction to the basics of electronics. It includes step-by-step instructions, illustrations, and diagrams to help readers understand the concepts and build their electronic projects.
These books cover many topics and provide clear explanations and practical examples to help readers bridge the gap between technician and engineering levels. It's always a good idea to read multiple books and resources to get a full understanding of the subject.
RF design is a very broad and specialised field. It is not uncommon to find books covering just one subject, antenna design, impedance matching, or filters come to mind. If you are new to the topic, I suggest that you look to ARRL and RSGB sources for an overview of the subject, although they are amateur radio oriented, they cover the topic in some detail, however they are not text books. Do you have a good grounding in maths, there is little escaping it if you are to take the subject on in any depth. It would help if you could say a little more about what your interest is, to narrow down what to suggest. There is some interesting info here, https://www.reddit.com/r/rfelectronics/comments/i4tbu2/an_rf_book_list/, but obviously this oriented towards university study, so most of it will assume a minimum back ground in electronics and maths. There are free online resources that may help, as well as a few book preferences in the following links, , http://explorerf.com/conquer-radio-frequency.html, https://www.rfmentor.com/, https://open.umn.edu/opentextbooks/textbooks/753, https://forum.allaboutcircuits.com/threads/rf-circuit-design-books.67394/ See if any of the above helps, good luck, cheers, Richard
