Dipole antenna other monopole) antennas on the basis of dipole antennas of which they are one half. German physicist Heinrich Hertz first demonstrated the existence of radio waves in 1887 using what we now know as a dipole antenna (with capacitative end-loading). On the other hand, Guglielmo Marconi empirically found that he could just ground the transmitter (or one side of a transmission line, if used) dispensing with one half of the antenna, thus realizing the "vertical" or monopole antenna. For the low frequencies Marconi employed to achieve long-distance communications, this form was more practical; when radio moved to higher frequencies (especially
Doug Hall (inventor) Doug Hall (inventor) Doug Hall is Founder & Chairman of Eureka! Ranch International. He is a lecturer, best-selling author, tv and radio host. Doug is a chemical engineer by education. He was Master Marketing Inventor at Procter & Gamble - shipping a record 9 products in 12 months. For his pioneering work turning innovation from an art into a science Doug was awarded a Doctor of Laws from the University of Prince Edward Island and a Doctor of Engineering from the University of Maine. Doug founded Eureka! Ranch in 1986. Originally designed as a "think tank for hire", the Ranch