Artech House Microwave Library. — Boston: Artech House, 1995. — 375 p.
Discusses frequency multipliers at a level that is comprehensible to engineers in the field and students in a graduate-level microwave course.
This specialist book is full of good ideas, covering a very broad range of devices. While the example designs are now outdated, the discussion and analysis is well written and as valid today as when it was written. An excellent introduction to anyone working in this field, and a reliable reference book for seasoned experts.