High-gain antenna
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Photogating in Low Dimensional Photodetectors Open
Low dimensional materials including quantum dots, nanowires, 2D materials, and so forth have attracted increasing research interests for electronic and optoelectronic devices in recent years. Photogating, which is usually observed in photo…
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High-Gain Observers in Nonlinear Feedback Control Open
The theory of high-gain observers has been developed for about twenty years. This paper is a brief introduction to high-gain observers in nonlinear feedback control, with emphasis on the peaking phenomenon and the role of control saturatio…
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A High-Gain Nonlinear Observer With Limited Gain Power Open
In this note we deal with a new observer for nonlinear systems of dimension
\nn in canonical observability form.
\nWe follow the standard high-gain paradigm, but instead of having an observer of dimension n with a gain that grows up to po…
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A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna Open
The increasing proliferation of advanced devices for UWB, 5G communication, micrometer-wave, and millimeter-wave communication demands an antenna which can handle huge data rates, provides high gain and stable radiation pattern as a panace…
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The Adaptive Gain Integrating Pixel Detector at the European XFEL Open
The Adaptive Gain Integrating Pixel Detector (AGIPD) is an X-ray imager, custom designed for the European X-ray Free-Electron Laser (XFEL). It is a fast, low-noise integrating detector, with an adaptive gain amplifier per pixel. This has a…
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Sub-THz Antenna for High-Speed Wireless Communication Systems Open
Terahertz (THz) links will play a major role in high data rate communication over a distance of few meters. In order to achieve this task, antenna designs with high gain and wideband characteristics will spearhead these links. In this cont…
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New capabilities of the upgraded EISCAT high‐power HF facility Open
The high‐power HF (high‐frequency) facility (commonly known as Heating) near Tromsø, Norway, which is an essential part of the European Incoherent Scatter Scientific Association, has been upgraded in certain key areas in recent years. It i…
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A Review of Broadband Low-Cost and High-Gain Low-Terahertz Antennas for Wireless Communications Applications Open
Low-terahertz (Low-THz, 100 GHz-1.0 THz) technology is expected to provide unprecedented data rates in future generations of wireless system such as the 6 th generation (6G) mobile communication system. Increasing the carrier frequencies f…
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A High-Gain Dielectric Resonator Antenna With Plastic-Based Conical Horn for Millimeter-Wave Applications Open
A novel high-gain dielectric resonator antenna, featuring a peak realized gain of 11.3 dBi over a fractional bandwidth of 16.6% around 30 GHz, is presented. The proposed antenna structure, excited by a slot-coupled microstrip line, is comp…
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High-Gain Nonlinear Observer With Lower Tuning Parameter Open
International audience
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A novel FSS for gain enhancement of printed antennas in UWB frequency spectrum Open
This paper presents a novel compact unilayer frequency selective surface (FSS) for ultra‐wideband (UWB) applications particularly for gain enhancement of printed antennas. The proposed FSS unit cell consists of simple metallic patterns pri…
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LOW-PROFILE HIGH-GAIN WIDEBAND MULTI-RESONANCE MICROSTRIP-FED SLOT ANTENNA WITH ANISOTROPIC METASURFACE Open
In this work, a high-gain and wideband microstrip-fed slot antenna is proposed and investigated, which is composed of an anisotropic metasurface (AMS) and an aperture coupled structure.The proposed microstrip antenna with four resonances c…
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A Review of High Gain and High Efficiency Reflectarrays for 5G Communications Open
The future adaptability of reflectarray antenna requires a thorough investigation of its main conventional features for expected improvements. Its existing design featuring at microwave and millimeterwave frequencies can be considered as a…
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Wearable high gain low SAR antenna loaded with backed all‐textile EBG for WBAN applications Open
A high gain, low specific absorption rate, oval‐shaped monopole antenna is presented. It is backed by an all‐textile 3 × 3 array of electromagnetic bandgap (EBG) unit cells. The antenna is printed on the thin Rogers ULTRALAM 3850 substrate…
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Nonlinearity-enabled higher-order exceptional singularities with ultra-enhanced signal-to-noise ratio Open
Higher-order exceptional points (HOEPs) with extraordinary responsivity are expected to exhibit a vastly improved performance in detection-related applications. However, over the past few years, such an approach has been questioned due to …
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Slotted ground microstrip antenna with FSS reflector for high‐gain horizontal polarisation Open
The design of a high‐gain horizontally polarised antenna for ultra‐wideband (UWB) operation is presented and experimentally demonstrated. Gain enhancement is achieved by using a frequency selective surface (FSS) reflector. Both the antenna…
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A Novel Hook-Shaped Antenna Operating at 28 GHz for Future 5G mmwave Applications Open
To address atmospheric attenuation and path loss issues in the mmwave portion of the spectrum, high gain and narrow beam antenna systems are essential for the next generation communication networks. This paper presents a novel hook-shaped …
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Extended High-Gain Observers as Disturbance Estimators Open
This paper reviews recent results on the use of extended high-gain observers as disturbance estimators. It shows how the use of these observers enables recovering the performance of feedback linearization controllers. It shows also how the…
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Modelling of ultra‐wide stop‐band frequency‐selective surface to enhance the gain of a UWB antenna Open
Here, an ultra‐wide stop‐band single‐layer frequency‐selective surface (FSS) with high‐incidence angle independence has been proposed to enhance the gain of an ultra‐wideband (UWB) monopole antenna. The unit cell (0.2 λ × 0.2 λ ) of the pr…
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Inherent vs. Induced Loop Gain Abnormalities in Obstructive Sleep Apnea Open
Unstable ventilatory chemoreflex control, quantified as loop gain, is recognized as one of four key pathophysiological traits that contribute to cause obstructive sleep apnea (OSA). Novel treatments aimed at reducing loop gain are being in…
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A FREQUENCY BAND RECONFIGURABLE UWB ANTENNA FOR HIGH GAIN APPLICATIONS Open
An octagonal shape patch antenna with switchable inverted L-shaped slotted ground is designed for frequency band reconfigurable and experimentally validated.The antenna is capable of frequency band switching at five different states includ…
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Broadband and High-Gain SIW-Fed Antenna Array for 5G Applications Open
A broadband and high-gain substrate integrated waveguide (SIW)-fed antenna array is demonstrated for 5G applications. Aperture coupling is adopted as the interconnecting method in the twolayer SIW feeding network. Two pairs of metallic pos…
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Enhancing Gain for UWB Antennas Using FSS: A Systematic Review Open
This review paper combs through reports that have enhanced antenna gain for ultra-wideband (UWB) frequencies using frequency-selective surface (FSS) techniques. The FSS techniques found across the research landscape were mapped onto a taxo…
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A Novel High Gain Monopole Antenna Array for 60 GHz Millimeter-Wave Communications Open
This paper presented the design and implementation of a 60 GHz single element monopole antenna as well as a two-element array made of two 60 GHz monopole antennas. The proposed antenna array was used for 5G applications with radiation char…
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Wideband subwavelength‐profile circularly polarised array antenna using anisotropic metasurface Open
A cost‐effective solution for the performance enhancement of circularly polarised array antennas by using a thin metasurface is proposed. The array is considered as reconfigurable, where an antenna engineer can arbitrarily add the metasurf…
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Thermally Activated Delayed Fluorescent Gain Materials: Harvesting Triplet Excitons for Lasing Open
Thermally activated delayed fluorescent (TADF) materials have attracted increasing attention because of their ability to harvest triplet excitons via a reverse intersystem crossing process. TADF gain materials that can recycle triplet exci…
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A Simple High-Gain Millimeter-Wave Leaky-Wave Slot Antenna Based on a Bent Corrugated SIW Open
We propose a bent corrugated substrate integrated waveguide (BCSIW) structure that can be used to design a high gain leaky wave antenna (LWA). The design removes the need for a metallic via fabrication process needed for standard substrate…
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High Gain 2x2 Slotted Array Antenna for 5G Mobile Applications Open
New optimized 2x2 slotted array antenna is designed using HFSS to operate at 28.1 GHz, using RT6010 substrate with height of 1.6 mm, tangent loss of 0.0023 and dielectric constant of 10.2 and overall dimension of 12x12 mm2, for 5G mobile a…
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Analysis of the Use of Low-Pass Filters with High-Gain Observers Open
High-gain observers play an important role in the design of feedback control for nonlinear systems. One challenge in the use of high-gain observers is the effect of measurement noise. It is shown in the literature that the presence of meas…
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Sensitivity to High-Frequency Measurement Noise of Nonlinear High-Gain Observers Open
This paper deals with the characterisation of the sensitivity to high-frequency measurement noise of nonlinear high-gain observers. The proposed tool provides bounds for the steady-state estimate in presence of noise when the high-gain par…