Results 11 to 20 of about 503,252 (278)

Tapered coaxial microwave probe sensor

open access: yesElectronics Letters, 2004
A tapered coaxial cavity probe sensor is introduced to demonstrate progressive improvements in the spatial resolution of metallisation patterns for scanning microwave microscopy (SMM) applications. Two versions of this design are described and experimental results illustrate the advantages of a reduced end area surrounding the projecting probe.
Valiente, L. A.   +2 more
openaire   +2 more sources

High-Speed Temperature Measurement [PDF]

open access: yesEPJ Web of Conferences, 2022
In certain applications where temperature changes rapidly, e.g., compressor cylinder or explosion chamber, it is necessary to obtain temperature data with a sample rate high enough to register the change, i.e., the temperature probe response time must be
Bouchal Patrik   +2 more
doaj   +1 more source

Aeroacoustics of a coaxial rotor in level flight [PDF]

open access: yes, 2008
The aeroacoustic characteristics of a coaxial system with teetering rotors in level forward flight are compared to those of an equivalent articulated single rotor with the same solidity.
Kim, Hyo Wan   +2 more
core   +5 more sources

Towards Non-Invasive Diagnosis of Skin Cancer: Sensing Depth Investigation of Open-Ended Coaxial Probes

open access: yesSensors, 2021
Dielectric properties of biological tissues are traditionally measured with open-ended coaxial probes. Despite being commercially available for laboratory use, the technique suffers from high measurement error. This prevents the practical applications of
Cemanur Aydinalp   +2 more
doaj   +1 more source

A comparison of coaxial and conventional rotor performance [PDF]

open access: yes, 2010
The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Richard E., Kim, Hyo Won
core   +3 more sources

Modelling the aerodynamics of coaxial helicopters : from an isolated rotor to a complete aircraft [PDF]

open access: yes, 2008
This paper provides an overview of recent research on the aerodynamics of coaxial rotors at the Rotorcraft Aeromechanics Laboratory of the Glasgow University Rotorcraft Laboratories.
Brown, R.E.   +7 more
core   +3 more sources

A rational approach to comparing the performance of coaxial and conventional rotors [PDF]

open access: yes, 2009
The merit, in terms of its efficiency and performance, of the twin, contrarotating coaxial rotor configuration over the more conventional single rotor system has long been a point of contention.
Brown, R.E., Kim, Hyo Wan
core   +3 more sources

Probe Feed Rectangular Microstrip Patch Antenna for1.5 GHz WLAN Application

open access: yesTikrit Journal of Pure Science, 2023
In this paper  the design of coaxial probe feed one layer microstrip patch antenna (MSA) . for 1.433 GHz WLAN application is presented, The impedance equivalent and the radiation physiognomies of this proposed assembly are planned and analyzed.
Faris Salih Ata Allah   +2 more
doaj   +1 more source

High spatial resolution Kelvin probe force microscopy with coaxial probes [PDF]

open access: yesNanotechnology, 2012
Kelvin probe force microscopy (KPFM) is a widely used technique to measure the local contact potential difference (CPD) between an AFM probe and the sample surface via the electrostatic force. The spatial resolution of KPFM is intrinsically limited by the long range of the electrostatic interaction, which includes contributions from the macroscopic ...
Brown, Keith A.   +2 more
openaire   +4 more sources

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