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A novel eight-band LTE/WWAN frequency reconfigurable antenna for tablet computer applications is proposed in this communication. With a small dimension of 40 12 4 , the proposed antenna comprises a loop feeding strip and a shorting strip in which a single-pole four-throw RF switch is embedded. The RF switch is used to change the resonant modes of lower band among...
This paper introduces a method for measuring water content of crude oil based on the principle that the dielectric constant changes of oil-water mixture can impact the antenna radiation characteristic. By the empirical formula of the mixture dielectric constant and the antenna radiation characteristic, this paper deduces the relation between antenna equivalent input impedance and dielectric constant...
A method for measuring water content in oil based on the principle that the dielectric constant of oil can impact the transmitting properties of electromagnetic waves is introduced in this paper. Starting with the equivalent input impedance of antenna, analyzes the relationship between the input impedance and dielectric constant, and uses the empirical formula of the dielectric constant of mixture,...
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