Results 21 to 30 of about 1,083 (258)
Micromachined 3D millimeter-wave and terahertz devices [PDF]
2015 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2015 Micromachining is a very promising technology to manufacture miniature three-dimensional (3D) devices at millimeter-wave (mm-wave) and terahertz (THz) frequencies. After a decade’s development, this technology has begun to demonstrate its viability and capability.
Wang, Yi, Shang, X., Lancaster, M.J.
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Orientation Model of Mobile Device for Indoor VLC and Millimetre Wave Systems [PDF]
2018 IEEE 88th Vehicular Technology Conference (VTC-Fall), 2018 Visible light communications (VLC) and Millimetre wave (mmWave) systems are two emerging technologies for short-range mobile communications. One of the limiting factors of both VLC and mmWave systems is the random orientation of mobile devices that can significantly affect the channel gain in both systems.
Zhihong Zeng +3 more
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Detection and analysis of cloud boundary in Xi'an, China, employing 35 GHz cloud radar aided by 1064 nm lidar [PDF]
Atmospheric Measurement Techniques, 2022 Lidar at 1064 nm and Ka-band millimetre-wave cloud radar (MMCR) are powerful tools for detecting the height distribution of cloud boundaries and can monitor the entire life cycle of cloud layers.
Y. Yuan +8 more
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Square-Framed T Shape mmwave Antenna Array at 28 GHz for Future 5G Devices
International Journal of Antennas and Propagation, 2021 In this research, a novel T shape antenna is proposed for millimetre-wave (mmwave) 5G systems. Designed on 0.254 mm thin Roggers 5880 substrate with a dielectric constant of 2.3 and the loss tangent of 0.0009, the proposed antenna offers a wideband ...
Saad Hassan Kiani +7 more
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CMOS devices and circuits for microwave and millimeter wave applications
2006 Asia-Pacific Microwave Conference, 2006 We present several building blocks for RF front ends at micro and mm-wave frequencies using 90 nm CMOS. The designs are 20 GHz single- and 40 GHz double stage amplifiers with 5.6 and 7.3 dB gain respectively, a 20 GHz resistive mixer with CL = 7.9 dB and IIP3 = 17.5 dBm plus frequency doublers to 40 and 60 GHz with CL = 15.8 and 15.3 dB ...
Ferndahl, M. +5 more
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Verification of scattering parameter measurements in waveguides up to 325 GHz including highly-reflective devices [PDF]
Advances in Radio Science, 2011 Radio-frequency (RF) scattering parameters (S-parameters) play an important role to characterise RF signal transmission and reflection of active and passive devices such as transmission lines, components, and small-signal amplifiers.
T. Schrader +4 more
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IEEE Access, 2021 Electromagnetic metamaterials (MMs) are composite structures that allow one to potentially develop unique and innovative microwave, millimetre wave, and optical devices due to their unusual physical properties.
Giovanni Angiulli, Mario Versaci
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W‐band layered waveguide filters based on CNC‐milling technology
IET Microwaves, Antennas & Propagation, 2022 The development of multi‐pixel receivers on the millimetre‐wave and terahertz bands demands on the integration of key waveguide devices. In this paper, two waveguide bandpass filters operating at the W‐band are developed based on the layered integration ...
Yun Zhao +4 more
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Harmonic solution of semiconductor transport equations for microwave and millimetre-wave device modelling [PDF]
International Journal of RF and Microwave Computer-Aided Engineering, 2003 The transport equations for charges in a semiconductor have been solved for a periodic voltage excitation by means of a harmonic approach, for modelling of microwave and millimetre-wave active devices. The solution is based on the expansion of the unknown physical quantities in Fourier series in the time domain, and on the discretisation in the space ...
G. ACCIARI, LEUZZI, GIORGIO, F. GIANNINI
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Remote Sensing, 2022 A macro-vertical structure is closely related to weather evolution and the energy budget balance of the atmospheric system of the Earth. In this study, radiosonde data were used to identify a cloud vertical structure (CVS) using the adjusted relative ...
Yun Yuan +6 more
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