Results 161 to 170 of about 13,252 (205)
Rectenna System Development Using Harmonic Balance and S-Parameters for an RF Energy Harvester. [PDF]
Sensors (Basel)Md Jamil MNB +5 more
europepmc +1 more source
A Novel Electromagnetic Response Measurement System for Continuous Monitoring of Meat Aging. [PDF]
FoodsMuramatsu D, Sasaki Y.
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +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
Simulation of VSWR in axisymmetric coaxial connector
Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings., 2003In this paper the finite-difference time-domain (FDTD) method and the transmission lines (TL) method are used respectively in the calculation of voltage standing wave ratio (VSWR) in an axisymmetric coaxial connector with nonuniform medium. Numerical results between the two methods are compared; more details of signal propagation in the connector can ...
null Song Zhan-hai +4 more
openaire +1 more source
Real time measurement of VSWR with directional couplers
ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004., 2005In this paper a method of measuring VSWR is introduced and discussed. In this method, first, the power of incident wave and reflected wave is measured separately with relevant directional coupler and detector. Then the magnitude of voltage reflection coefficient and VSWR are calculated by MCU.
null Xinyuan Wang +2 more
openaire +1 more source