Millimetre wave
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Millimetre-Wave Backhaul for 5G Networks: Challenges and Solutions Open
The trend for dense deployment in future 5G mobile communication networks makes current wired backhaul infeasible owing to the high cost. Millimetre-wave (mm-wave) communication, a promising technique with the capability of providing a mul…
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Machine‐learning‐based prediction methods for path loss and delay spread in air‐to‐ground millimetre‐wave channels Open
The unmanned aerial vehicles (UAVs) have been widely applied in various fields due to their advantages like high mobility and low cost. Reliable communication is the premise to ensure the connectivity between UAV nodes. To provide reasonab…
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Beam‐scanning leaky‐wave antenna based on CRLH‐metamaterial for millimetre‐wave applications Open
This paper presents empirical results of an innovative beam‐scanning leaky‐wave antenna (LWA), which enables scanning over a wide angle from − 35° to + 34.5° between 57 and 62 GHz, with broadside radiation centred at 60 GHz. The proposed L…
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Three‐dimensional printed millimetre wave dielectric resonator reflectarray Open
Reflectarray antennas have attracted extensive attention due to their low loss, high gain, compact volume, and their excellent abilities to control the radiated beam. The use of dielectric resonators as the reflectarray elements minimises …
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Low-profile flexible frequency-reconfigurable millimetre-wave antenna for 5G applications Open
© 2018 IOP Publishing Ltd. This paper presents the design and characterisation of a flexible, inkjet-printed, low-profile, and frequency-reconfigurable antenna, intended for the fifth generation (5G) wireless networks operating at millimet…
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Beam Alignment for Millimetre Wave Links with Motion Prediction of Autonomous Vehicles Open
Intelligent Transportation Systems (ITSs) require ultra-low end-to-end delays and multi-gigabit-per-second data transmission. Millimetre Waves (mmWaves) communications can fulfil these requirements. However, the increased mobility of Conne…
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Propargylimine in the laboratory and in space: millimetre-wave spectroscopy and its first detection in the ISM Open
Context. Small imines containing up to three carbon atoms are present in the interstellar medium (ISM). As alkynyl compounds are abundant in this medium, propargylimine (2-propyn-1-imine, HC ≡C−CH =NH) thus represents a promising candidate…
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High Sensing Accuracy Realisation With Millimetre/Sub-Millimetre Resolution in Optical Frequency Domain Reflectometer Open
By effectively suppressing the nonlinear sweep noise and random range of wavelength sweep in the optical frequency domain reflectometer, the theoretical spatial resolution and uniform sweep distribution are delivered for high sensing accur…
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3D Printing of Millimetre Wave and Low-Terahertz Frequency Selective Surfaces Using Aerosol Jet Technology Open
sponsorship: This work was funded by UK Engineering and Physical Sciences Research Council (EPSRC) High Value Manufacturing Fellowship (REF: EP/L017121/1), the EPSRC grant titled Low-Pro~le Ultra-Wideband Wide-Scanning Multi-Function Beam-…
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Millimetre‐wave air‐filled substrate integrated waveguide slot array antenna Open
An air‐filled substrate integrated waveguide (AFSIW) slot array antenna based on multilayer PCB process is proposed. For comparison and demonstration purposes, 1 × 4 slot array antennas based on both AFSIW and conventional dielectric‐fille…
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Maximising system throughput in wireless powered sub-6 GHz and millimetre-wave 5G heterogeneous networks Open
Millimetre wave (mm-Wave) bands and sub-6 GHz are key technologies in solving the spectrum critical situation in the fifth generation (5G) wireless networks in achieving high throughput with low transmission power. This paper studies the p…
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Millimetre-Wave Metamaterial-Based Sensor for Characterisation of Cooking Oils Open
The characterisation of the cooking oils presents a significant challenge due to minor changes in their dielectric behaviour. In this paper, a new metamaterial-based sensor incorporating a split-ring resonator (SRR) with a microstrip trans…
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ON THE FEASIBILITY OF ASSESSING BURN WOUND HEALING WITHOUT REMOVAL OF DRESSINGS USING RADIOMETRIC MILLIMETRE-WAVE SENSING Open
The authors present transmission data, taken at Ka (36 GHz) and W (95 GHz) bands in the millimetre-wave region of the electromagnetic spectrum, for various dressing materials used in the treatment and management of burn wounds.The results …
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Characterising molecules for fundamental physics: an accurate spectroscopic model of methyltrioxorhenium derived from new infrared and millimetre-wave measurements Open
Low temperature infrared spectroscopic studies are used to improve our understanding of the structure of methyltrioxorhenium in the context of molecular parity violation measurements.
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Structure and Optimisation of Liquid Crystal based Phase Shifter for Millimetre-wave Applications Open
The delivery of tunable millimetre-wave components at 60GHz is of research and development interests with the advent of 5G era. Among applications such as high-data-rate wireless communications, high-precision automotive radars and hand-ge…
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Non-destructive testing of arbitrarily shaped refractive objects with millimetre-wave synthetic aperture radar imaging Open
Millimetre-wave (mmW) imaging is an emerging technique for non-destructive testing. Since many polymers are transparent in this frequency range, mmW imaging is an attractive means in the testing of polymer devices, and images of relatively…
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Emotion recognition method using millimetre wave radar based on deep learning Open
Non‐contact emotion recognition is a new research field. Using millimetre‐wave radar does not require users to wear any equipment, and there is no privacy violation. This study proposes a new emotion recognition method, which uses millimet…
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Design considerations of ultra dense 5G network in millimetre wave band Open
The fifth Generation (5G) network will provide services with extreme data rate and latency demands compared to
\ncurrent cellular networks, and provide massive capacity and
\nconnectivity to multitude of devices with diverse requirements a…
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On the Techniques to Develop Millimeter-Wave Textile Integrated Waveguides Using Rigid Warp Threads Open
Two millimeter-wave textile integrated wave- guides (TIWs), which only differ in the employed substrate, have been designed, manufactured, and experimentally characterized. Both waveguides are based on the conventional substrate integrated…
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Adaptive location‐based millimetre wave beamforming using compressive sensing based channel estimation Open
Analogue beamforming is normally used in conjunction with millimetre wave (mmWave) communications to overcome the high propagation and penetration losses inherent in mmWave transmissions. Thus, producing a high‐efficient mmWave beamforming…
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Improving millimetre-wave path loss estimation using automated hyperparameter-tuned stacking ensemble regression machine learning Open
Path loss prediction is a crucial aspect of designing and operating wireless communication systems, especially in the millimetre-waves (mmWaves) frequency bands. However, these bands are associated with climate-related challenges: rain att…
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Planning Mm-Wave Access Networks With Reconfigurable Intelligent Surfaces Open
With the capability to support gigabit data rates, millimetre-wave (mm-Wave) communication is unanimously considered a key technology of future cellular networks. However, the harsh propagation at such high frequencies makes these networks…
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ICNIRP Guidelines’ Exposure Assessment Method for 5G Millimetre Wave Radiation May Trigger Adverse Effects Open
The current global roll-out of 5G infrastructure is designed to utilise millimetre wave frequencies (30–300 GHz range) at data transmission rates in the order of gigabits per second (Gbps). This frequency band will be transmitted using bea…
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A novel method for calibration and verification of roadside millimetre‐wave radar Open
Roadside perception systems commonly rely on millimetre‐wave radars that are stationary. Obtaining global coordinates of radar detection targets requires calibration of radars installed on roadways, which is dangerous if performed via conv…
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Analysis of double‐Xi‐shaped millimetre‐wave patch antenna backed by a high‐order‐mode cavity using characteristic mode design Open
The authors propose an innovative double‐Xi‐shaped Chinese character artistic antenna backed by a high‐order‐mode cavity for 5G millimetre‐wave (mm‐wave) applications. The initial double‐Xi‐shaped microstrip antenna element is designed by …
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Miniature parallel robot with submillimeter positioning accuracy for minimally invasive laser osteotomy Open
To overcome the physical limitations of mechanical bone cutting in minimally invasive surgery, we are developing a miniature parallel robot that enables positioning of a pulsed laser with an accuracy below 0.25 mm and minimizes the require…
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Synthetic Aperture Radar Imaging for Burn Wounds Diagnostics Open
The need for technologies to monitor the wound healing under dressing materials has led us to investigate the feasibility of using microwave and millimetre wave radiations due to their sensitivity to water, non- ionising nature, and transp…
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Improvement of on‐wafer measurement accuracy with RF signal detection technique at millimetre‐wave frequencies Open
The study proposes an innovative method of improving calibration reproducibility in on‐wafer measurements. First, an uncertainty analysis was conducted on a measurement system. Based on the analysis results, the probe positional error in t…
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Joint users selection and beamforming in downlink millimetre‐wave NOMA based on users positioning Open
In this study, joint users selection and beamforming based on users positioning are proposed for enabling non‐orthogonal multiple access (NOMA) in the millimetre‐wave (mmWave) transmissions. In the proposed scheme, the mmWave users are arr…
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Beam squint compensation for hybrid precoding in millimetre‐wave communication systems Open
In this letter, the authors report a beam squint compensation method for hybrid precoding in millimetre‐wave communication systems. With the objective to maximise the spectral efficiency, they formulate the hybrid precoding problem conside…