Title :
A cost-effective amplifier for electromagnetic field strength measurement
Author :
Rusek, A. ; Oakley, B. ; Bachrouche, H. ; El Shaar, B. ; Liu, J.
Author_Institution :
Dept. of Electr. & Syst. Eng., Oakland Univ., Rochester, MI, USA
Abstract :
Problems associated with high sensitivity electromagnetic radiation measurements arise when low levels of broadband radiated emissions are to be detected. Such measurements require expensive and sensitive equipment operating in a broad range of frequencies. This paper presents an inexpensive broadband amplifier designed to increase the overall gain of a measurement system consisting of a 50 ohm broadband antenna coupled to a 50 ohm input spectrum analyzer. Addition of the amplifier increases system gain by nearly 30 dB with insignificant degradation in the signal-to-noise ratio. The bandwidth of the system exceeds 1000 MHz, with the frequency ranging between 30MHz and 2.2GHz.
Keywords :
biological effects of fields; biomedical measurement; broadband antennas; field strength measurement; health hazards; instrumentation amplifiers; microwave measurement; spectral analysers; wideband amplifiers; 1000 MHz; 30 MHz to 2.2 GHz; 50 ohm; bandwidth; biomedical measurements; broadband antenna; broadband radiated emissions; cost-effective amplifier; electromagnetic field strength measurement; health risks; high sensitivity electromagnetic radiation measurements; inexpensive broadband amplifier; input spectrum analyzer; low levels; radio frequency radiation; signal-to-noise ratio; system gain; Antenna measurements; Broadband amplifiers; Broadband antennas; Electromagnetic fields; Electromagnetic measurements; Electromagnetic radiation; Frequency measurement; Gain measurement; Radiation detectors; Spectral analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1019537
