A unifying principle explaining the numerical bounds of quantum correlations remains elusive, despite the efforts devoted to identifying it. Here, we show that these bounds are indeed not exclusive to quantum theory: for any abstract correlation scenario with compatible measurements, models based on classical waves produce probability distributions indistinguishable from those of quantum theory and, therefore, share the same bounds. We demonstrate this finding by implementing classical microwaves that propagate along meter-size transmission-line circuits and reproduce the probabilities of three emblematic quantum experiments. Our results show that the "quantum" bounds would also occur in a classical universe without quanta. The implications of this observation are discussed.
In this work, it is studied the application in hyperthermia of a microwave focusing device based on metamaterials. The device consists of a planar array of split-ring resonators placed between two parallel metallic plates and it is fed by a small loop antenna which excites the split-rings. The device is modelled as an homogeneous uniaxial slab of negative permeability placed between two metallic plates. Both the fields and the temperature distribution in model of breast tissue and a tumor are numerically obtained. The field produced by the fabricated device inside a phantom resembling the breast tissue was measured with a probe to check the theoretical predictions.
An experimental setup to demonstrate negative refraction is described. A simple method for designing and fabricating a metamaterial with negative refractive index at microwave frequencies is discussed. The metamaterial is made of a multilayer planar arrangement of flat unit cells. A prism was fabricated and used to demonstrate negative refraction at the prism-air interface. The prism is designed for demonstrations and works at the frequency of commercial microwave transmitters and receivers.
Port1) and 4.33 dBi (Port2) for the two elements of MIMO antenna at 2450 MHz.
CONCLUSIONSIn this article, a compact multiband internal antenna for GSM, DCS, and WLAN services is proposed. The measured results indicate that return loss characteristics are well satisfied, and high-isolation characteristics of no more than À13 dB are obtained over the frequency bands of interest, and reasonable radiation patterns and antenna gains for each frequency band are achieved. Therefore, the proposed antenna is suitable for modern mobile application.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.