Silicon based reconfigurable antennas

Fathy, Aly E.; Rosen, A.; Owen, Heather; Kanamaluru, S.; McGinty, F.; McGee, David J.; Taylor, G.; Swain, P. K.; Perlow, S.M.; ElSherbiny, M.

doi:10.1109/mwsym.2001.966910

Cited by 10 publications

(4 citation statements)

References 2 publications

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“…Among various semiconductors, silicon is highly advocated because the large size and easy availability of low-cost high-quality silicon wafers, excellent mechanical strength and high thermal conductivity, as well as the high carrier lifetime in high-resistivity silicon devices [147]. The authors presented a novel direct current (DC) controlled silicon PIN diode design on a silicon substrate, employing the lithographic technology in [147], [148]. Such silicon PIN diodes are capable of realizing a similarly switchable functionality compared with conventional switches, thus paving the way for implementing a reconfigurable HMIMO surface.…”

Section: A Hardware Structures Of Hmimo Surfacesmentioning

confidence: 99%

Holographic MIMO Communications: Theoretical Foundations, Enabling Technologies, and Future Directions

Gong¹,

Gavriilidis²,

Ji³

et al. 2023

Preprint

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<p>Future wireless systems are envisioned to create an endogenously holography-capable, intelligent, and programmable radio propagation environment, that will offer unprecedented capabilities for high spectral and energy efficiency, low latency, and massive connectivity. A potential and promising technology for supporting the expected extreme requirements of the sixth-generation (6G) communication systems is the concept of the holographic multiple-input multiple-output (HMIMO), which will actualize holographic radios with reasonable power consumption and fabrication cost. The HMIMO is facilitated by ultra-thin, extremely large, and nearly continuous surfaces that incorporate reconfigurable and sub-wavelength-spaced antennas and/or metamaterials. Such surfaces comprising dense electromagnetic (EM) excited elements are capable of recording and manipulating impinging fields with utmost flexibility and precision, as well as with reduced cost and power consumption, thereby shaping arbitrary-intended EM waves with high energy efficiency. The powerful EM processing capability of HMIMO opens up the possibility of wireless communications of holographic imaging level, paving the way for signal processing techniques realized in the EM-domain, possibly in conjunction with their digital-domain counterparts. However, in spite of the significant potential, the studies on HMIMO communications are still at an initial stage, its fundamental limits remain to be unveiled, and a certain number of critical technical challenges need to be addressed. In this survey, we present a comprehensive overview of the latest advances in the HMIMO communications paradigm, with a special focus on their physical aspects, their theoretical foundations, as well as the enabling technologies for HMIMO systems. We also compare the HMIMO with existing multi-antenna technologies, especially the massive MIMO, present various promising synergies of HMIMO with current and future candidate technologies, and provide an extensive list of research challenges and open directions for future HMIMO-empowered wireless applications.</p>

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Section: A Hardware Structures Of Hmimo Surfacesmentioning

confidence: 99%

Holographic MIMO Communications: Theoretical Foundations, Enabling Technologies, and Future Directions

Gong¹,

Gavriilidis²,

Ji³

et al. 2023

Preprint

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“…Another antenna aperture concept, developed by researchers at the Sarnoff Corporation, uses semiconductor plasmas to form antenna structures 35 . This "pixel" approach to a reconfigurable aperture relies on high conductivity plasma islands that are formed and controlled by injected DC currents into silicon-based diode structures.…”

Section: Reconfigurable Aperturesmentioning

confidence: 99%

“…This approach has several unique and attractive features, one of which is that when turned off, the aperture possesses extremely low radar cross section. In addition to forming specific antenna structures, it can also be used to reconfigure holograms for holographic antennas that promise to deliver performance comparable to traditional phased arrays without the need for expensive phase shifters 35 .…”

Section: Reconfigurable Aperturesmentioning

confidence: 99%

Reconfigurable antennas and apertures: state of the art and future outlook

Bernhard

2003

SPIE Proceedings

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The future proliferation of truly high-speed wireless systems will require more functionality from antennas than can be provided by classic designs. One approach to this challenge is to develop reconfigurable antennas. The goal of a reconfigurable radiator -one that can adjust its operating frequency, bandwidth, and/or radiation pattern to accommodate changing requirements -poses significant challenges to both antenna and system designers. This paper highlights some of the recent advances in the area of antenna reconfiguration, at the University of Illinois and elsewhere, as well as discusses some of the barriers that still need to be overcome to arrive at realizable technologies. These barriers include the development of reliable, mass-manufacturable RF MEMS switches, the design of switch bias networks that will not interfere with antenna operation, and the expansion of signal processing and feedback algorithms to fully exploit this new antenna functionality.

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“…An improved performance with reduced cost can be obtained if a single aperture could be reconfigured to operate over various frequencies, thus covering a large bandwidth. The antenna aperture is typically reconfigured using PIN switches, MEMS switches, or photonically controlled devices [1][2][3][4][5][6][7][8][9]. Recent results show that a reconfigurable aperture array maintains a higher gain than a fixed aperture array over several frequencies, even when the switches are lossy [10].…”

Section: Introductionmentioning

confidence: 99%