Measurement of the Specific Absorption Rate using a single electric field sensor
Fernandes, D. E.
; Marcos, J.
Maslovski , S.
Silveirinha, M. G.
Measurement of the Specific Absorption Rate using a single electric field sensor, Proc Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. 1, pp. 1 - 4, April, 2011.
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The Specific Absorption Rate (SAR) is usually measured using electric field probes based on dipole antennas, loaded with radio frequency (RF) detector diodes and connected to differential amplifiers through high-impedance transmission lines. The most common configuration consists of three mutually orthogonal electric short dipole antennas, loaded with a fast switching detector, providing broadband characteristics. In this work, we describe the measurement of the SAR with a sensor based on a single dipole antenna. It is shown that this reduces the complexity of the system without compromising the accuracy and frequency response. The probe is tested by measuring the SAR for a dual-band Planar Inverted-F antenna.