PATTERNS OF STUB ANTENNAS ON CYLINDRICAL STRUCTURES

1956 ◽  
Vol 34 (2) ◽  
pp. 190-202 ◽  
Author(s):  
James R. Wait ◽  
K. Okashimo
Keyword(s):  
Circular Cylinder ◽  
Half Plane ◽  
Experimental Results ◽  
Infinite Length ◽  
Radiation Patterns ◽  
Cylindrical Structures ◽  
Electric Dipoles ◽  
Perfect Conductivity

Theoretical radiation patterns are presented for radial electric dipoles located on an isolated circular cylinder, and a cylindrically tipped half-plane. These cylindrical structures are considered to be of infinite length and of perfect conductivity. The computed patterns for the isolated cylinder compare well with the experimental results reported by Bain.

An Experimental Investigation for Flow Past a Circular Cylinder With Rectangular Strips

2002 ◽  
Author(s):  
Chuan He ◽  
Tianyu Long ◽  
Mingdao Xin ◽  
Benjamin T. F. Chung
Keyword(s):  
Experimental Investigation ◽  
Fluid Flow ◽  
Circular Cylinder ◽  
Drag Coefficient ◽  
Experimental Results ◽  
Sharp Edge ◽  
Flow Past ◽  
Rectangular Strips

This paper reports an experimental investigation for fluid flow past a circular cylinder with two small rectangular strips and single sharp-edge strips on its surface. The experimental results reflected that different arrangements or dimensions of the strips produced significantly different effects on the flow. The forward step caused a stronger disturbance with a small increase in drag. The backward step arrangement softened the disturbance but reduced the drag coefficient by 33%.

A Novel Design on Compact Slot Antenna with Multi-Band for WiMAX/WLAN Applications

2014 ◽  
Vol 644-650 ◽  
pp. 4455-4458 ◽  
Author(s):  
Li Zhu ◽  
Xiang Jun Gao ◽  
Long Zheng
Keyword(s):  
Relative Permittivity ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Experimental Results ◽  
Slot Antenna ◽  
Radiation Patterns ◽  
Triple Frequency ◽  
Novel Design ◽  
Multi Band

In this paper, a novel coplanar waveguide (CPW)-fed and miniaturized slot antenna for triple-frequency operation is proposed and investigated, which is printed on a small 20mm×20mm FR4 substrate with thickness of 1.0 mm and relative permittivity of 4.3. Through loading different slits, three perfect operating bands of 2.4GHz-2.45GHz, 3.25GHz-4.15GHz and 5.05GHz-6.25GHz are achieved respectively, when return loss is less than-10dB. Experimental results show that the antenna gives monopole-like radiation patterns and good antenna gains over the operating bands. Such antennas is suitable for WLAN 2.4/5.2/5.8 GHz and WiMAX 3.5/5.5 GHz applications.

Nonlinear Wave Forces on a Pair of Vertical Cylinders

1991 ◽  
Vol 113 (1) ◽  
pp. 1-8
Author(s):  
K. Masuda ◽  
T. Nagai
Keyword(s):  
Numerical Calculation ◽  
Circular Cylinder ◽  
Nonlinear Wave ◽  
Cross Sections ◽  
Present Method ◽  
Integration Method ◽  
Vertical Cylinder ◽  
Experimental Results ◽  
Wave Forces ◽  
Vertical Cylinders

The present paper is concerned with development of a powerful scheme for calculating nonlinear wave forces on a pair of vertical cylinders with arbitrary cross sections. The Laguerre integration method is applied and its convergence is confirmed in the cases of a single vertical cylinder and a twin circular cylinder. Further, the present method is compared with the method given by Eatock-Taylor and Hung [9], and then the computational times and those properties for a numerical calculation are investigated. The numerical results for maximum wave forces on the vertical cylinders obtained by the present method are compared with the experimental results, so that the usefulness is clarified.

Note on the Flow past a Circular Cylinder

1935 ◽  
Vol 31 (4) ◽  
pp. 585-588
Author(s):  
L. Howarth
Keyword(s):  
Boundary Layer ◽  
Circular Cylinder ◽  
Experimental Results ◽  
Turbulent Motion ◽  
Flow Past ◽  
Method Of Solution

Buri's method of solution of the equations of turbulent motion in a boundary layer has been used extensively in a previous paper. Since the results of that investigation have not been compared with experiment, nor has any other application of Buri's method been checked experimentally, it seems advisable to apply this method to a problem for which the experimental results are known.

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