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

Volume

4

fYear

2001

fDate

2001

Firstpage

3325

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1019537

Filename

1019537