Effective Harnessing of Energy from GSMReceiving Antenna Array as a Source for LowPower Applications

Abstract : This research work presents,
design of five element array to investigate
the power level that can be harvested from
surrounding and processed to charge up low
power electronics circuits and devices. This
novel idea is implemented for the GSM band
applications. Wireless energy available in the
environment is received by the receiving Dipole
Antenna Array which is designed for frequency
947.5MHz, the center frequency of the GSM
downlink band 935 – 960MHz.The received
energy is stored and multiplied with electrolytic
capacitors to drive low power devices. Further
this RF energy is converted into Dc voltage with
bridge rectifier.
I. Introduction
The ever increasing use of wireless devices,
such as mobile phones, radio broadcasts, wireless
computing and remote sensing has resulted in
an increased demand and reliance on the use of
batteries [4]. With semiconductor and other IC
technologies continually striving towards lower
operating powers, batteries could be replaced by
alternative sources, such as DC power generators
employing various energy harvesting techniques
[5].
With the growth of GSM users in the country
every operator has installed powerful transmitters
and this energy is available for use other than
mobile applications but not harnessed as on date
for its other applications [4]. Hence the need of
development of such applications which can be
used effectively this available energy [3]. On the
other side the need of energy is increasing day by
day and we need additional sources particularly
for the areas where electrical transmission line
construction is not feasible because of forest or
water or economic reasons [1].