Loop-antenna tuning system
作者： Bernard D Loughlin
DOI:
关键词: Musical tuning 、 Loop (topology) 、 Engineering 、 Operating frequency 、 Loop antenna 、 Electrical engineering
摘要: The present invention relates to loop-antenna tuning systems and, particularly, such in which a circuit is tuned any selected operating frequency within wide range of frequencies. In recent years, it has become the practice utilize loop antennas rather...
lens.org 参考文章(1)
William A Schaper, Signal collecting system for radio receivers ,(1940)