Radio-Frequency Energy Harvesting In article number 2300197, Suk Tai Chang, Sungjoon Lim, and co-workers report that a foldable radio-frequency (RF) energy-harvesting system (RFEH) can be realized by integrating an RF antenna, to direct-current rectifier, supercapacitor within single sheet of paper. This work reveals the potential role paper-based RFEH in applications such as remote powering we...

High speed data converters have been used in communications applications for many years and can be found in much of the equipment that forms the basis of our connected world, from cellular telephone base stations to cable head-end equipment to radar and specialized communication systems. Recent technological advances have enabled clock rates on high speed data converters to move to higher and h...

In software defined radio (SDR) systems, it is desirable to down-convert multiple RF signals simultaneously by placing an analogue-to-digital converter (ADC) as near the antenna as possible. Radio frequency (RF) subsampling is one of the established methodologies used by radio receivers to directly down-convert and digitize RF signals. In this paper, we propose a novel direct RF sampling method...

Trinidad has tar sand resources of about 2 billion barrels of oil on land in the Parrylands/Guapo and Brighton areas. With an oil price of over USD 25 per barrel, the commercial extraction of oil from Trinidad tar sands is viable, but it requires a careful study. The relatively small extent of this tar sand (about 10,000 acres and with depths varying from surface to less than 500 feet) and with...

In Today's world RFID (radio frequency identification) technology is one of the most popular technologies for tracking and tracing, whereby a person or an object is identified using Radio Frequency (RF) transmission using a special kind of a sensor network. Recently, radio frequency identifications (RFIDs) are used to identify the assets which are permanent objects used internally in business. ...

The principal idea behind the design of a software radio is to place the analog-to-digital and digital-to-analog converters as near to the antenna as possible, such that most of the radio functionalities can be implemented on a digital signal processor. One way to achieve this is by direct bandpass sampling of the desired RF signal band to baseband frequency. However, the design of a software r...

We investigate the tunneling shot noise limits on the sensitivity of a microme-chanical displacement detector based on a metal junction, radio-frequency single-electron transistor (rf-SET). In contrast with the charge sensitivity of the rf-SET electrometer, the displacement sensitivity improves with increasing gate voltage bias and, with a suitably optimized rf-SET, displacement sensitivities o...

Radio frequency tags allow objects to become self-describing, communicating their identity to a close at hand RF reader. Our goal is to build a radio frequency identity and geometry (RFIG) transponder that can also communicate geometry, inter-tag location history or context-sensitive

e-mail: [email protected] October 15, 2008 Abstract We report on a new type of magnetic lens that focuses atomic clouds using a static inhomogeneous magnetic field in combination with a radio-frequency field (rf). The experimental study is performed with a cloud of cold cesium atoms. The rf field adiabatically deforms the magnetic potential of a coil and therefore changes its foc...

This paper presents a radio-frequency (RF) transceiver fabricated in a UMC RF 0.18 μm CMOS process. The RF transceiver was built to operate at the 5.7 GHz ISM band. The transceiver has a total power consumption of 23 mW and it is intended for the use in each wireless node of a wireless sensor network.