An electrically-small annular slot operating in the 'DC' mode

2003 ◽  
Author(s):  
P.R. Urwin-Wright
Keyword(s):  
Annular Slot

scholarly journals Compact SIW Fed Dual-Port Single Element Annular Slot MIMO Antenna for 5G mmWave Applications

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Muhammad Usman ◽  
Enis Kobal ◽  
Jamal Nasir ◽  
Yuanwei Zhu ◽  
Chao Yu ◽  
...  
Keyword(s):  
Single Element ◽  
Mimo Antenna ◽  
Annular Slot

scholarly journals A FUNCTIONAL MICROSTRIP CIRCUIT MODULE FOR ANNULAR SLOT ANTENNA

2013 ◽  
Vol 136 ◽  
pp. 255-267 ◽  
Author(s):  
Yu-Ming Lee ◽  
Shuming T. Wang ◽  
Hsien-Chiao Teng ◽  
Shen Cherng
Keyword(s):  
Slot Antenna ◽  
Annular Slot ◽  
Microstrip Circuit

Circularly polarized co-designed filtering annular slot antenna

2018 ◽  
Vol 90 ◽  
pp. 30-35 ◽  
Author(s):  
Jianxing Li ◽  
Xiaoke Zhang ◽  
Jianzhong Chen ◽  
Juan Chen ◽  
Kai Da Xu ◽  
...  
Keyword(s):  
Slot Antenna ◽  
Circularly Polarized ◽  
Annular Slot

scholarly journals OPERATOR METHOD IN THE PROBLEM OF A PLANE ELECTROMAGNETIC WAVE DIFFRACTION BY AN ANNULAR SLOT IN THE PLANE OR BY A RING

2021 ◽  
Vol 26 (4) ◽  
pp. 350-357
Author(s):  
M. E. Kaliberda ◽  
◽  
L. M. Lytvynenko ◽  
S. A. Pogarsky ◽  
◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Circular Hole ◽  
Wave Diffraction ◽  
Scattered Field ◽  
Plane Electromagnetic Wave ◽  
Operator Method ◽  
Fredholm Integral Equations ◽  
Fourier Amplitude ◽  
Annular Slot ◽  
Electromagnetic Wave Diffraction

Purpose: The problem of a plane electromagnetic wave diffraction by an annular slot in the perfectly conducting zero thickness plane is considered. As a dual problem, the problem of diffraction by a perfectly conducting zero thickness ring is also considered. The paper aims at developing the operator method for the axially symmetric structures placed in free space. Design/methodology/approach: The problem is considered in the spectral domain. The scattered field is expressed in terms of unknown Fourier amplitudes (spectral functions). The annular slot is given as a unity of two simple discontinuities, namely of a disk and a circular hole in the plane, which interact with each other. The Fourier amplitude of the scattered field is sought as a sum of two amplitudes, the Fourier amplitude of the field of currents on the disk and Fourier amplitude of the field of currents on the perfectly conducting plane with circular hole. The operator equations are written for these amplitudes, which take into account the electromagnetic coupling of the disk and the hole in the plane. The equations use the reflection operators of a single isolated disk and a single hole in the plane. They are supposed to be known and can be obtained for example by the method of moments.The reflection operators can have singularities. After transformations, the equations are obtained, which are equivalent to the Fredholm integral equations of second kind and they can be solved numerically. Findings: The operator equations relative to the Fourier amplitudes of the field scattered by the discussed structure are obtained. The far zone scattered field for an annular slot and a ring for different values of parameters are studied. Conclusions: The rigorous solution of the problem of the electromagnetic wave diffraction by an annular slot in the plane and by a circular ring is obtained. The problem is reduced to the Fredholm integral equations of second kind. The far field distribution for different parameters is studied. The developed approach is an effective instrument for a number of problems of antenna technique to be solved. Key words: circular hole; disk; annular slot; ring; operator method; diffraction

A dual-band microstrip annular slot-based mimo antenna system

2014 ◽  
Vol 57 (2) ◽  
pp. 360-364 ◽  
Author(s):  
Muhammad Umar Khan ◽  
Mohammad S. Sharawi
Keyword(s):  
Antenna System ◽  
Dual Band ◽  
Mimo Antenna ◽  
Annular Slot
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