EMC antenna calibration and the design of an open-field site

Abstract

Testing electronic equipment for radiated emissions requires the accurate calibration of antennas. This in turn entails the use of a high-quality measurement site. The design of an open-field site for the calibration of antennas in the frequency range 30-1000 MHz is described. An antenna that is used as a primary standard must have a calculable antenna factor since there are uncertainties in quantifying the quality of the site and hence of setting up a known field. The design of a standard dipole antenna and the S-parameter characterization of its balun/matching network is described, followed by methods for calibrating the antenna factor of antennas.

The Design of Calculable Standard Dipole Antennas in the Frequency Range of 1~3 GHz

“…The formulation introduced in this paper is derived by using the power mismatch-loss concept [5], [6]. The antenna factors obtained by employing this concept are in good agreement with the factors derived by S-parameters [1]. The results of the theoretical analysis presented in this paper, allow the design of a calculable dipole antenna using the power loss components.…”

“…Calculable dipole antennas have been developed and used as standard antennas [1], [2]. The half-wavelength resonance dipole is one of the most basic antennas because the accurate calculation of the antenna characteristics can usually be achieved using method of moments (MoM).…”

“…Previous work has dealt with the analysis of a calculable dipole antenna factor by using S-parameters [1]～ [4]. This paper presents the derivation of a new formula for an antenna factor composed of the power loss component factors for a calculable dipole antenna with a 3 dB 180-degree hybrid balun.…”

Broadband calculable dipole reference antenna in the 1 GHz to 3 GHz frequency range

“…Calculable standard dipoles have been developed and are used as standard antennas [1,2]. Standard dipole antennas are necessary to generate standard fields and to measure antenna factors.…”

“…Previous works dealt with analysis of the antenna factor of a calculable dipole antenna by using the power mismatch-loss concept and S-parameters [1,2,3,4,5,6,7,8]. The formulation of the antenna factor presented in this paper was derived by using the power mismatch-loss concept [5,6,7,8] comprising the power loss components.…”