[attachment=6054]
SOLAR POWER SATELLITES AND MICROWAVE
WIRELESS POWER TRANSMISION TECHNOLOGY


INTRODUCTION


The new millennium has introduced increased pressure for finding
new renewable energy sources. The exponential increase in population has led
to the global crisis such as global warming, environmental pollution and
change and rapid decrease of fossil reservoirs. Also the demand of electric
power increases at a much higher pace than other energy demands as the world
is industrialized and computerized. Under these circumstances, research has
been carried out to look into the possibility of building a power station in space
to transmit electricity to Earth by way of radio waves-the Solar Power
Satellites. Solar Power Satellites(SPS) converts solar energy in to micro waves
and sends that microwaves in to a beam to a receiving antenna on the Earth for
conversion to ordinary electricity.SPS is a clean, large-scale, stable electric
power source. Solar Power Satellites is known by a variety of other names
such as Satellite Power System, Space Power Station, Space Power System,
Solar Power Station, Space Solar Power Station etc.[1].One of the key
technologies needed to enable the future feasibility of SPS is that of
Microwave Wireless Power Transmission.WPT is based on the energy transfer
capacity of microwave beam i.e,energy can be transmitted by a well focused
microwave beam. Advances in Phased array antennas and rectennas have
provided the building blocks for a realizable WPT system