Author
R. Bansal
Bio: R. Bansal is an academic researcher from University of Connecticut. The author has contributed to research in topics: Microwave & Turnstile. The author has an hindex of 1, co-authored 1 publications receiving 4282 citations.
Topics: Microwave, Turnstile, Redux, Telecommunications, Agency (philosophy)
Papers
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01 Jul 1984
5,335 citations
TL;DR: If the world should blow itself up, the last audible voice would be that of an expert saying, “It can’t be done as discussed by the authors . . . it is impossible.
Abstract: If the world should blow itself up, the last audible voice would be that of an expert saying, “It can’t be done.”
1 citations
TL;DR: It’s kind of embarrassing. as mentioned in this paper The most energetic process on the planet, we have religions centered around this thing, and we have no idea how it works.
Abstract: It’s kind of embarrassing. It’s the most energetic process on the planet, we have religions centered around this thing, and we have no idea how it works.
TL;DR: In the prologue to his new book as discussed by the authors , Canadian scientist Jacob Van Dyk reports the following incident from his own life, which is described in detail in Section 5.1.
Abstract: In the prologue to his new book [1] , Canadian scientist Jacob Van Dyk reports the following incident from his own life
TL;DR: In his delightful memoir, this article , mathematician Edward Frenkel shares the following “anecdote about wireless telegraphy: Ã ¼ Ã Þ Þ
Abstract: In his delightful memoir, Love & Math [1] , mathematician Edward Frenkel shares the following “anecdote” about wireless telegraphy:
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TL;DR: The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time.
Abstract: Multiple-input multiple-output (MIMO) technology is maturing and is being incorporated into emerging wireless broadband standards like long-term evolution (LTE) [1]. For example, the LTE standard allows for up to eight antenna ports at the base station. Basically, the more antennas the transmitter/receiver is equipped with, and the more degrees of freedom that the propagation channel can provide, the better the performance in terms of data rate or link reliability. More precisely, on a quasi static channel where a code word spans across only one time and frequency coherence interval, the reliability of a point-to-point MIMO link scales according to Prob(link outage) ` SNR-ntnr where nt and nr are the numbers of transmit and receive antennas, respectively, and signal-to-noise ratio is denoted by SNR. On a channel that varies rapidly as a function of time and frequency, and where circumstances permit coding across many channel coherence intervals, the achievable rate scales as min(nt, nr) log(1 + SNR). The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time [2].
5,158 citations
TL;DR: In this article, the physical phenomenon of long-lifetime resonant electromagnetic states with localized slowly-evanescent field patterns was investigated to transfer energy efficiently over non-negligible distances even in the presence of extraneous environmental objects.
1,628 citations
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TL;DR: This paper gives a basic review and a summary of recent developments for leaky-wave antennas (LWAs), a guiding structure that supports wave propagation along the length of the structure, with the wave radiating or “leaking” continuously along the structure.
Abstract: This paper gives a basic review and a summary of recent developments for leaky-wave antennas (LWAs). An LWA uses a guiding structure that supports wave propagation along the length of the structure, with the wave radiating or “leaking” continuously along the structure. Such antennas may be uniform, quasi-uniform, or periodic. After reviewing the basic physics and operating principles, a summary of some recent advances for these types of structures is given. Recent advances include structures that can scan to endfire, structures that can scan through broadside, structures that are conformal to surfaces, and structures that incorporate power recycling or include active elements. Some of these novel structures are inspired by recent advances in the metamaterials area.
988 citations
TL;DR: The role of plasmonic resonances on the performance of nanoantennas and the influence of geometrical parameters imposed by nanofabrication are discussed.
Abstract: Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light with nanoscale matter by their ability to efficiently link propagating and spatially localized optical fields. This ability unlocks an enormous potential for applications ranging from nanoscale optical microscopy and spectroscopy over solar energy conversion, integrated optical nanocircuitry, opto-electronics and density-of-states engineering to ultra-sensing as well as enhancement of optical nonlinearities. Here we review the current understanding of metallic optical antennas based on the background of both well-developed radiowave antenna engineering and plasmonics. In particular, we discuss the role of plasmonic resonances on the performance of nanoantennas and address the influence of geometrical parameters imposed by nanofabrication. Finally, we give a brief account of the current status of the field and the major established and emerging lines of investigation in this vivid area of research.
878 citations
TL;DR: The state of the art in nanos sensor technology is surveyed from the device perspective, by explaining the details of the architecture and components of individual nanosensors, as well as the existing manufacturing and integration techniques for nanosensor devices.
613 citations