Wireless Power Transmission Demonstration by James O. McSpadden
William C. Brown, the leading authority on wireless power
transmission technology, has loaned this demonstration unit to
the Texas Space Grant Consortium to show how power can be
transfered through free space by microwaves. A block diagram of
the demonstration components is shown below. The primary
components include a microwave source, a transmitting antenna,
and a receiving rectenna. The microwave source consists of a
microwave oven magnetron with electronics to control the output
power. The output microwave power ranges from 50 W to 200 W at
2.45 GHz. A coaxial cable connects the output of the microwave
source to a coax-to-waveguide adapter. This adapter is connected
to a waveguide ferrite circulator which protects the microwave
source from reflected power. The circulator is connected to a
tuning waveguide section to match the waveguide impedance to the
antenna input impedance. The slotted waveguide antenna consists
of 8 waveguide sections wit