EM Sensor for Determining Impedance of EM Field.
Abstract
A method and device are given for determining the impedance of the electric and magnetic fields in the near and far fields associated with a radiating antenna. The electric and magnetic field components are sensed in a far field location and the system is calibrated using a known relationship between the electric and magnetic field components. The sensed signals are transmitted optically via a fiber optic link to an optical receiver. The received optical signals are modulated by an audio signal generator and input into a ratio detector via variable attenuators which are used to calibrate the system. Multiple subsequent ratios are measured and recorded as a function of location of the sensor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 19, 1981
- Accession Number
- ADD008710
Entities
People
- Andrew A. Cuneo Jr.
- James J. Loftus
Organizations
- United States Army