Journal ArticleDOI
Measurements of complex antenna factor by the near-field 3-antenna method
TLDR
In this article, a near-field 3-antenna method for measuring the complex antenna factor (CAF) is proposed in order to reduce the effect of the measurement site and background noise.Abstract:
The near-field 3-antenna method for measuring the complex antenna factor (CAF) is proposed in order to reduce the effect of the measurement site and background noise. The transmission coefficients in the far-field region are calculated from those measured in the near-field and theoretically obtained near-field correction factors (NCF). The CAF of monopole antennas are measured using the proposed method in a frequency range up to 6 GHz. From the measurement results, the dependency of CAF values on the antenna distance is small. These results indicate that our theory including the NCF is applicable for the measurements of the CAF of simple-structure antennas.read more
Citations
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Journal ArticleDOI
Pattern descriptors for UWB antennas
TL;DR: In this paper, three descriptors of antenna performance appropriate for ultrawide-band (UWB) applications are proposed and described: energy pattern, correlated energy pattern and correlation coefficient pattern.
Journal ArticleDOI
An Effective Method of Probe Calibration in Phase-Resolved Near-Field Scanning for EMI Application
TL;DR: This paper presents a fast and efficient calibration method which uses the same setup and instruments during calibration and measurement, and it allows for easy and economical integration of the calibration hardware and software into the scanning system.
Proceedings ArticleDOI
Free space link budget evaluation of UWB-IR systems
TL;DR: In this paper, the free space link budget evaluation of UWB-IR systems based on the extended Friis' transmission formula is discussed, where the matched filter is considered at the receiver side to maximize the SNR for evaluation.
Journal ArticleDOI
Experimental Microwave Validation of Level Set Reconstruction Algorithm
TL;DR: In this article, the level set method was used for shape and location reconstruction using real measurement data in the range of 3-8 GHz, and the results showed good agreement between the reconstructed cross section and the true configuration.
Journal ArticleDOI
Measurement and Uncertainty Analysis of Free-Space Antenna Factors of a Log-Periodic Antenna Using Time-Domain Techniques
TL;DR: The proposed method enables the direct wave to be isolated from reflected waves on the ground plane of an open-area test site (OATS) and evaluation of the free-space antenna factor of a log-periodic dipole antenna with a time-domain technique.
References
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Journal ArticleDOI
The Transmission and Reception of Elliptically Polarized Waves
TL;DR: In this paper, a vector parameter is defined which represents a generalization of the effective length of an antenna to include a specification of the polarization of the field radiated by the antenna, which is useful in calculating the voltage at the terminals of the antenna when it is used to receive plane waves of arbitrary (elliptical) polarization.
Journal ArticleDOI
Standard-Site Method for Determining Antenna Factors
TL;DR: In this paper, a method for calibrating antennas from site attenuation measurements made on an open-field site is described, termed the standard-site method because the accuracy of the results depends on the quality of the measuring site.
Journal ArticleDOI
Sensors for Electromagnetic Pulse Measurements Both Inside and Away from Nuclear Source Regions
TL;DR: In this paper, the authors summarized the various sensor designs developed to achieve this in an optimal manner and summarized the different sensor designs for use either in a free space or in a system under test in such a simulator.
Journal ArticleDOI
Transients in a resistively loaded linear antenna compared with those in a conical antenna and a TEM horn
TL;DR: In this article, the receiving and transmitting transient responses of the resistively loaded linear antenna, the TEM horn, and the conical antenna were investigated theoretically and experimentally using the fast Fourier transform (FFT) technique.
Journal ArticleDOI
EMC antenna calibration and the design of an open-field site
M J Salter,M J Alexander +1 more
TL;DR: In this paper, the design of an open field site for the calibration of antennas in the frequency range 30-1000 MHz is described, followed by methods for calibrating the antenna factor of antennas.
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