Thick wire concept applied on a bi-quad antenna to enlarge the bandwidth

2018 ◽  
Author(s):  
A. Hubrechsen ◽  
A.C.F. Reniers ◽  
A.B. Smolders
Keyword(s):  
Thick Wire

scholarly journals Experimental researches in electricity: Twenty-ninth series

1854 ◽  
Vol 6 ◽  
pp. 165-168 ◽  
Keyword(s):  
Magnetic Force ◽  
Present Series ◽  
The Earth ◽  
Experimental Researches ◽  
Thick Wire

In the present series of researches the author endeavours in the first place to establish the principles he announced in the last, with regard to the definite character of the lines of magnetic force, by results obtained experimentally with the magnetic force of the earth. For this purpose he reverts to the thick wire galvanometer before described, and points out the precautions respecting the cleanliness of the coils, the thickness and shortness of the conductors, the perfect contacts, effected either by soldering or cups of mercury; and marks the value of double observations, i. e. observations afforded on both sides of zero.

scholarly journals Magnetic properties of supraconductors

1936 ◽  
Vol 154 (882) ◽  
pp. 378-385 ◽  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
External Magnetic Field ◽  
Copper Wire ◽  
Thermal Contact ◽  
Threshold Value ◽  
Test Tube ◽  
The Other ◽  
Longitudinal Field ◽  
Thick Wire

Mendelssohn and Babbitt observed that the induction in solid and hollow tin spheres which became supraconductive in an external magnetic field did not fall quite to zero, but that part of the magnetic flux was “frozen in” at the threshold value. This behaviour could be explained by considerations based on the shape of the specimen, although it was not certain if this was the only reason for the effect. It seemed therefore that it would be of interest to investigate specimens of a shape which assured simpler conditions, such as long rods in a longitudinal field, in addition to extending the experiments to a greater number of supraconducting substances. Method The same two helium liquefiers with which the previous experiments were carried out were used again. The specimens employed were in the form of long rods attached by a short thick wire of electrolytic copper to the helium container. The wire was autogenously welded to one end of the specimen, the other end of the copper wire being soldered to the helium container. In the case of mercury the metal was contained in a test tube held independently, into which a copper wire dipped and made thermal contact. A coil one layer thick of 47 s. w. g. copper wire was wound round the middle of each specimen, the ends being connected to a ballastic galvanometer.

scholarly journals Design Features in Multiple Generations of Electronic Cigarette Atomizers

2019 ◽  
Vol 16 (16) ◽  
pp. 2904 ◽  
Author(s):  
Monique Williams ◽  
Prue Talbot
Keyword(s):  
First Generation ◽  
Solder Joints ◽  
Electronic Cigarette ◽  
Third Generation ◽  
Design Features ◽  
Multiple Generations ◽  
The Third ◽  
Design Changes ◽  
Over Time ◽  
Thick Wire

The design of electronic cigarette (EC) atomizing units has evolved since their introduction over 10 years ago. The purpose of this study was to evaluate atomizer design in ECs sold between 2011–2017. Atomizers from 34 brands representing three generations of ECs were dissected and photographed using a stereoscopic microscope. Five distinct atomizer design categories were identified in first generation products (cig-a-like/cartomizer) and three categories were found in the third generation. Atomizers in most cig-a-like ECs contained a filament, thick wire, wire joints, air-tube, wick, sheath, and fibers, while some later models lacked some of these components. Over time design changes included an increase in atomizer size; removal of solder joints between wires; removal of Polyfil fibers; and removal of the microprocessor from Vuse. In second and third generation ECs, the reservoirs and batteries were larger, and the atomizing units generally lacked a thick wire, fibers, and sheath. These data contribute to an understanding of atomizer design and show that there is no single design for ECs, which are continually evolving. The design of the atomizer is particularly important as it affects the performance of ECs and what transfers into the aerosol.

scholarly journals Analysis of thick-wire antennas using a novel and simple kernel treatment

2005 ◽  
Vol 46 (4) ◽  
pp. 410-417 ◽  
Author(s):  
F. D. Quesada Pereira ◽  
J. L. Gómez Tornero ◽  
D. Cañete Rebenaque ◽  
J. Pascual García ◽  
A. Álvarez Melcón
Keyword(s):  
Wire Antennas ◽  
Thick Wire ◽  
Simple Kernel

scholarly journals I. The thermal emissivity of thin wires in air

1892 ◽  
Vol 50 (302-307) ◽  
pp. 166-172
Keyword(s):  
Electric Current ◽  
Thermal Emissivity ◽  
Thin Wires ◽  
The Wire ◽  
Thick Wire

In 1884 it was observed experimentally that whereas the electric current required to maintain a thick wire of given material, under given conditions, at a given temperature was approximately proportional to the diameter of the wire raised to the power three halves, the current was more nearly proportional to the first power of the diameter if the wire were thin.

Condensation Droplet Distribution Regulated by Electrowetting

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Run Yan ◽  
Chung-Lung Chen
Keyword(s):  
Transfer Rate ◽  
Droplet Growth ◽  
Electrode Design ◽  
Electrowetting On Dielectric ◽  
Charged Surfaces ◽  
Droplet Distribution ◽  
Novel Approach ◽  
Single Side ◽  
Shedding Frequency ◽  
Thick Wire

Abstract This paper presents a visualization of condensation droplet distribution affected by the electrowetting-on-dielectric (EWOD) approach. A single-side double-layer-electrode design (grid wire, thin wire, and thick wire) and coplanar-electrode design (zigzag) are discussed. Side-by-side experiments with applied 40 V DC electric potential are carried out to compare droplet distribution between identically designed charged and uncharged devices. The uncharged devices show a random droplet distribution, whereas charged devices have a regulated distribution based on the designed patterns. As droplets on the electrode boundaries become larger, they are likely to slide away and stay in electrode-free regions. The droplets “sit” inside the grid wires and distribute vertically along thin and thick wires. On the coplanar-electrode zigzag device, droplets are distributed vertically. The charged surfaces lead to a faster droplet growth rate and more dispersed droplet distribution. This phenomenon accelerates the shedding frequency of the droplets and frees up more areas for small droplets to nucleate and grow. The first shedding moment of the charged surfaces occurs earlier than the uncharged ones for all types of EWOD devices. The detected droplet shedding diameter ranges from 1.2 mm to 2.5 mm in this study. The number of large droplets is found greater on the charged devices compared with the uncharged devices and theoretical model. The work presented in this paper introduces a novel approach to actively influence droplet distribution on microfabricated condensing surfaces and indicates great potential for improving the condensation heat transfer rate via EWOD.

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