Results 201 to 210 of about 1,121 (254)
Polarization State of 77 GHz Millimetre Wave for the Large Helical Device
Polarization State of 77 GHz Millimetre Wave for the Large Helical Deviceopenaire +1 more source
A millimetre-wave superconducting hyper-spectral device
RAS Techniques and Instruments, 2023 Abstract Millimetre-wave observations represent an important tool for cosmology studies. The line intensity mapping technique has been proposed to map in three dimensions the specific intensity due to line (e.g. [C ii] and CO) emission, e.g. from the primordial galaxies, as a function of redshift.
Alessandro Monfardini +2 more
exaly +4 more sources
Waveguide/resonant-disc circuits for millimetre-wave devices
Electronics Letters, 1982 Bias circuits using resonant discs have been employed for millimetre-wave transferred-electron (TE) diodes operating at their second or third harmonic frequencies in the V (50–75 GHz) and W (75–110 GHz) bands. It is shown that this type of circuit exhibits resonances at frequencies in the lower millimetre-wave range, corresponding to the fundamental ...
R Bosch
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A distributed approach for millimetre-wave electron device modelling
2006 European Microwave Integrated Circuits Conference, 2006Electron device modelling at very high frequencies needs, as a preliminary step, the identification of suitable parasitic elements mainly describing the passive structure used for accessing the intrinsic device. However, when dealing with device modelling at millimetre-wave frequencies conventional lumped parasitic networks necessarily become less ...
Fabio Filicori +2 more
exaly +3 more sources
Coplanar Versus Microstrip Measurements of Millimetre-Wave Devices
40th ARFTG Conference Digest, 1992The purpose of this paper is to identify the differences between millimetre-wave small-signal scattering parameter device measurements on-wafer in coplanar and microstrip test formats. Calibration in coplanar and microstrip is examined to determine the measurement reference planes and possible calibration problems in the millimetre-wave frequency range.
Peter C. Walters +4 more
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Relay selection scheme for device- to-device based 3D millimetre-wave cellular networks [PDF]
IET Communications, 2019 Millimetre‐wave (mmWave) communication is a key technology for future cellular networks. However, mmWave signals may be limited in coverage since they are susceptible to blockages. In order to mitigate blockages effect and enhance the coverage probability, device‐to‐device relaying can be used to improve the direct link reliability.
Ridha Bouallegue +2 more
exaly +4 more sources
Effects of tunnelling current on millimetre-wave IMPATT devices
International Journal of Electronics, 2014In this paper, the influence of tunnelling on the RF performance of millimetre-wave (mm-wave) impact ionisation avalanche transit time (IMPATT) diodes operating in mixed tunnelling and avalanche transit time mode is studied by taking into account the parasitic series resistance of the device.
Aritra Acharyya +2 more
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Optical devices for millimetre-wave transmission
International Topical Meeting on Microwave Photonics. MWP '96 Technical Digest. Satellite Workshop (Cat. No.96TH8153), 2002The development of practical and high-performance optoelectronic device technology at BT Laboratories (BTL) for millimetre-wave analogue optical links is described. Two-moded lasers (for the transmitter) and heterojunction bipolar phototransistors (for the receiver) are discussed in detail.
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Dielectric resonator based MIMO antenna system enabling millimetre-wave mobile devices
IET Microwaves, Antennas and Propagation, 2017 In this study, a millimetre‐wave dielectric resonator (DR)‐based multiple‐input–multiple‐output (MIMO) antenna system based on two linear arrays is presented. Each array that represents a single MIMO antenna consists of four cylindrical DR antenna (cDRA) elements operating at 30 GHz with a bandwidth of at least 1 GHz.
Symon K Podilchak +2 more
exaly +2 more sources