Results 181 to 190 of about 30,504 (243)
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IEEE International Solid-State Circuits Conference, 2022
Mm-wave 5G communication seeks to support multi-Gb/s data-rates over its large available spectrum, particularly in the K/Ka bands (24 to 40GHz). To ensure sufficient link budget under mm-wave path losses, array-based systems are required.
D. Munzer +3 more
semanticscholar +1 more source
Mm-wave 5G communication seeks to support multi-Gb/s data-rates over its large available spectrum, particularly in the K/Ka bands (24 to 40GHz). To ensure sufficient link budget under mm-wave path losses, array-based systems are required.
D. Munzer +3 more
semanticscholar +1 more source
A Single-Ended Coupler-Based VSWR Resilient Joint mm-Wave True Power Detector and Impedance Sensor
IEEE Microwave and Wireless Components Letters, 2021This letter presents the design of a coupler-based VSWR-resilient mm-wave joint impedance/true-power detector integrated together with a wideband power amplifier (PA) in a 45-nm CMOS SOI process.
D. Munzer +2 more
semanticscholar +1 more source
IEEE Journal of Solid-State Circuits, 2020
Antenna load impedance variations typically cause significant power amplifier (PA) performance degradation, including output power, large-signal linearity, and peak/average PA efficiency, which are especially critical for modern millimeter-wave (mm-Wave)
Naga Sasikanth Mannem +3 more
semanticscholar +1 more source
Antenna load impedance variations typically cause significant power amplifier (PA) performance degradation, including output power, large-signal linearity, and peak/average PA efficiency, which are especially critical for modern millimeter-wave (mm-Wave)
Naga Sasikanth Mannem +3 more
semanticscholar +1 more source
IEEE International Solid-State Circuits Conference, 2020
Modern mm-wave 5G links rely extensively on phased arrays to achieve high array gain for sufficient coverage. However, the proximity of antenna elements often results in element-to-element coupling, which leads to significant element-level antenna ...
M. N. Sasikanth +4 more
semanticscholar +1 more source
Modern mm-wave 5G links rely extensively on phased arrays to achieve high array gain for sufficient coverage. However, the proximity of antenna elements often results in element-to-element coupling, which leads to significant element-level antenna ...
M. N. Sasikanth +4 more
semanticscholar +1 more source
Problem of measuring large VSWRs
Measurement Techniques, 1965There exists for each VSWR an immersion area (or zone) in which the error due to the probe conductance is insignificant. Therefore, large VSWR values should be measured with immersions corresponding to that area (see Fig. 3).
E. B. Zal'tsman, V. E. Poyarkova
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Active VSWR Robustness Comparison for Different Phase Combining Topologies
2021 19th IEEE International New Circuits and Systems Conference (NEWCAS), 2021This paper presents a comparative study on the resilience to load variations brought by combining structures for amplifier topologies. Three out-of-phase four-way combining topologies based on Wilkinson combiners, 90° and 180° hybrid couplers are compared with a conventional in-phase four-way combining topology based on Wilkinson combiners.
Alexandre Berthier +3 more
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VSWR reduction for large millimeter-wave cassegrain radiotelescopes
International Journal of Infrared and Millimeter Waves, 1991Multiple reflections in large radiotelescopes used for astronomical spectroscopy cause characteristic modulations of the observed spectrum (“baseline ripple”). For a given mechanism, the magnitude of the effect depends primarily on the reflection coefficient, which for the most important paths is proportional to λ.
Rachael Padman, Richard E. Hills
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The VSWR of E-plane dihedral horns
IEEE Transactions on Antennas and Propagation, 1978In order to better understand the mechanisms to be controlled to produce low VSWR in horn antennas, a series of computations using a moment method solution has been made for a dihedral horn antenna. Techniques are developed for eliminating the primary source of high VSWR for the E -plane dihedral horn.
A. Terzuoli, J. Richmond, L. Peters
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Symposium on VLSI Circuits, 2019
Future mm-Wave transmitter front-ends will need to operate in an electromagnetically complex environment that are resistant to near-field antenna perturbations (VSWR events) while operating across multiple mmWave frequency bands (28/37/39/42 GHz) and ...
C. R. Chappidi, K. Sengupta
semanticscholar +1 more source
Future mm-Wave transmitter front-ends will need to operate in an electromagnetically complex environment that are resistant to near-field antenna perturbations (VSWR events) while operating across multiple mmWave frequency bands (28/37/39/42 GHz) and ...
C. R. Chappidi, K. Sengupta
semanticscholar +1 more source
VSWR properties of E-plane dihedral corrugated horns
IEEE Transactions on Antennas and Propagation, 1978A moment method solution is used to evaluate the VSWR of dihedral corrugated horns in terms of the various contributors. Knowledge gleaned in this fashion is then used to control these reflections, and in turn reduce the horn VSWR. Use of an appropriate curved horn waveguide geometry in conjunction with a tapered corrugation input yields a very small ...
A. Terzuoli, L. Peters
openaire +1 more source