منابع مشابه
Time-domain Measurement of Antenna Q
A time-domain technique applicable to numerical and experimental application is used to determine the radiation Q of a turnstile antenna as a function of relatï e phasing between the two dipoles. Results confirm the theory that Q is a minimum with the dipoles in phase quadrature. Q 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 25: 95]100, 2000.
متن کاملLow Perturbation Antenna Impedance Measurement Techniques
The indirect two-port reflection method for measuring antenna impedances is reviewed using scattering parameter techniques and developed into a more accurate low perturbation optically coupled transmission measurement. This transmission measurement infers the antenna impedance by measuring the voltage induced in a number of loads connected to the antenna port with reference to the antenna used ...
متن کاملThe Engineering Implement of Antenna Time-domain Near-field Measurement System
At present, a complete measurement system has been built up successfully by our laboratory, besides its engineering implement has been accomplished also. We can show an antenna’s radiation field in a form of 3D animation dynamically with this measurement system, which demonstrates the time-domain near-field measurement theory and the time-domain near-field measurement system are practical. The ...
متن کاملCorrelation techniques applied to antenna pattern measurement - Electronics Letters
A correlation processor based on the excellent periodic autocorrelation properties of maximal-length pseudorandom binary sequences has been used in antenna pattern measurements to resolve the direct (wanted) path from any unwanted multipath components. A simple implementation of the technique has been used to make measurements in a controlled environment; the results show that the multipath eff...
متن کاملPicosecond-Domain Radiation Pattern Measurement Using Fiber-Coupled Photoconductive Antenna
The photoconductive terahertz measurement technique was used for measurement of the radiation pattern from thick metal slits. Picosecond pulses were generated and detected by an ultrafast optoelectronic technique using a femtosecond pulse laser and a subpicosecond photoconductor. Photoconductive sampling measurements of the polarization-dependent diffraction of the picosecond electromagnetic pu...
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ژورنال
عنوان ژورنال: IEEE Antennas and Propagation Magazine
سال: 1997
ISSN: 1045-9243
DOI: 10.1109/74.637102