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Article: Researchers at Arizona State University target antennas and propagation.
- Article from:
- Electronics Newsweekly
- Article date:
- November 11, 2009
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According to a study from the United States, "We present a nondestructive method for determination of the permittivity and loss tangent of low-loss dielectrics using printed circuit board (PCB) circular disks."
"Because it utilizes multiple resonances, this method is in high precision and broadband (500 MHz-12 GHz), covering the UHF, GSM 850/1800, 802.11b/g, WiMax, WLAN, and UWB bands. The method is simple and accurate based on closed-form analytic expressions of cylindrical symmetry, taking into account disk rim fringing fields and radiation loss," wrote Z.H. Guo and colleagues, Arizona State University.
The researchers concluded: "Numerical results are ...