Technical Feasibility of an Open Area Test Site in Brazil for the UHF Band (300 MHz to 1 GHz)

Shielding Effectiveness Measurements of Coaxial Cable and Connectors Using Compact Open Area Test Site

“…All measurements related to electromagnetic ambient noise show that the amplitudes of the noise are 20 dB below the measurement levels for class A Information Technology Equipment (ITE) and 6 dB below for class B (ITE) [5]. For impeccable results, an ambient noise level of 20 dB below the emission level measured is recommended [8,15]. Class B Information Technology Equipment (ITE) is a category of apparatus which satisfies the class B disturbance limits.…”

“…It does not prevent the construction of OATS for the purpose of measuring the shielding effectiveness quality factor of cables and connectors, because the measured NSA value is close to the theoretical one [2,8]. The Fig.…”

“…The electromagnetic ambient noise should be at least 6 dB below the limits set by radiated emissions standards [5,6]. For satisfactory results, it is recommended a level of ambient noise of 20 dB below the emission level measured [7,8]. The radiated electromagnetic emission tests were carried out in the far-field region.…”

“…Considering that the OATS is properly constructed, some of the great advantages of open field tests compared with anechoic and semi-anechoic chambers are the low cost of measurements (one-time costs of about five-hundred thousand Dollars) and the ability to obtain accurate measurements [8]. Table I show some latest relevant papers (on the OATS subject) published in the databases of the IEEE during 2013-2017 Aug. 2016 [13 ] A Fast Way to Accurately Calibrate Tunable Dipole Antennas at VHF Jun.…”