Anritsu has expanded its electromagnetic field (EMF) measurement system with the introduction of isotropic antennas that provide frequency coverage from 9 kHz to 6 GHz. The new antennas are compatible with certain LMR Master, Spectrum Master and Cell Master hand-held analysers, and support measurements of EMF radiation to ensure that wireless networks are in compliance with various national standards for personal safety established by regulatory authorities.
The two isotropic antennas employ tri-axis sensors with an integrated RF switch device, microcontroller and memory. Each of the three sensors is positioned orthogonally inside the antenna housing to transmit/receive a spherical radiation pattern so that the entire radiation is measured at the antenna’s geographical position.
The isotropic antennas are easy to operate, as the RF switch, microcontroller and memory inside the antenna are controlled by firmware in the Anritsu hand-held analyser via a USB cable. Once all three probes are switched precisely by the microcontroller, a composite RMS calculation is made. Anritsu also offers a third isotropic antenna with a frequency coverage of 0.7-6 GHz. It is designed for operators who have to conduct measurements in the cellular band. The EMF measurement system is easy to use, as numerous automated features enable field technicians to do their job quickly and more efficiently. By integrating the antennas and EMF option into a compatible LMR Master, Spectrum Master or Cell Master, the system allows users to make radiation power measurements in spectrum analyzer mode. Further, narrowband or wideband field strength measurements can be made across the frequency range of the spectrum analyser and isotropic antenna being used. Also, EMF testing can be conducted on demodulated signals in various cellular channels, including long term evolution (LTE), TD-LTE and W-CDMA standards.
