scholarly journals WIDE BAND L-PROBE FED CIRCULAR PATCH ANTENNA WITH ELLIPTICAL PARASITIC PATCH AND TWO ELEMENTS ARRAY

2015 ◽  
Vol 60 ◽  
pp. 169-177 ◽  
Author(s):  
Muhammad Nazrul Islam ◽  
Markus Berg ◽  
Timo Tarvainen ◽  
Erkki T. Salonen
Keyword(s):  
Patch Antenna ◽  
Wide Band ◽  
Circular Patch ◽  
Parasitic Patch ◽  
Circular Patch Antenna

Fractal loaded circular patch antenna for super wide band operation in THz frequency region

Optik ◽  
2021 ◽  
Vol 226 ◽  
pp. 165528
Author(s):  
Swarup Das ◽  
Debasis Mitra ◽  
Sekhar Ranjan Bhadra Chaudhuri
Keyword(s):  
Patch Antenna ◽  
Wide Band ◽  
Frequency Region ◽  
Circular Patch ◽  
Circular Patch Antenna

scholarly journals A Wide-Bandwidth Monopolar Patch Antenna with Dual-Ring Couplers

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Yuanyuan Zhang ◽  
Juhua Liu ◽  
Zhixi Liang ◽  
Yunliang Long
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Wide Band ◽  
Wide Bandwidth ◽  
Maximum Gain ◽  
Circular Patch ◽  
Operating Band ◽  
Low Profile ◽  
Circular Patch Antenna ◽  
Dual Ring

A new center-fed circular patch antenna with two coupled annular rings is presented. When the two annular rings are coupled properly, a wide band from 5.45 GHz to 7.16 GHz is achieved with a monopole-like radiation pattern. Measured results show that the antenna with a low profile of 0.027 wavelengths (at 5.45 GHz) has a bandwidth of 27.1% and a measured maximum gain of 6 dBi. The radiation pattern is omnidirectional and remains relatively stable within the operating band.

A novel wide-band circular patch antenna

2005 ◽  
Vol 22 (6) ◽  
pp. 681-685
Author(s):  
Jian Wang ◽  
Hou Zhang ◽  
Wenli Huang ◽  
Xueyu Huang
Keyword(s):  
Patch Antenna ◽  
Wide Band ◽  
Circular Patch ◽  
Circular Patch Antenna

Wide-Band L-Probe Fed Circular Patch Antenna for Conical-Pattern Radiation

2004 ◽  
Vol 52 (4) ◽  
pp. 1115-1116 ◽  
Author(s):  
Y.-X. Guo ◽  
M.Y.W. Chia ◽  
Z.N. Chen ◽  
K.-M. Luk
Keyword(s):  
Patch Antenna ◽  
Wide Band ◽  
Circular Patch ◽  
Circular Patch Antenna

scholarly journals Generation of Broadband High-Purity Dual-Mode OAM Beams Using A Four-Feed Patch Antenna: Theory and Implementation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yuhan Huang ◽  
Xiuping Li ◽  
Qingwen Li ◽  
Zihang Qi ◽  
Hua Zhu ◽  
...  
Keyword(s):  
High Purity ◽  
Patch Antenna ◽  
Wide Band ◽  
Dual Mode ◽  
Left Hand ◽  
Antenna Theory ◽  
Parasitic Patch ◽  
Circular Patch Antenna ◽  
Mode Purity ◽  
First Time

Abstract A broadband four-feed circular patch antenna is demonstrated to generate high-purity dual-mode vortex beams carrying orbital angular momentum (OAM) for the first time. The electric field formula of the circularly polarized (CP) component is derived for analyzing radiation characteristics of different OAM modes, such as the CP property, phase and amplitude distributions. Theoretical calculation and numerical simulation results show that the four-feed patch antenna operating in the TMn1 mode can generate ±n OAM waves. A prototype of a four-feed circular TM21-mode patch antenna is fabricated and measured to verify the effectiveness of the theoretical analysis. The proposed antenna consists of a four-feed patch with an air-coupled parasitic patch and a four-way phase-shifting feeding network. Experimental results show that the proposed antenna can generate a left-hand CP OAM with mode l = +2 and a right-hand CP OAM with mode l = −2. The OAM beams are generated in a wide band from 5.50 to 6.50 GHz with a mode purity over 90%. The proposed method is very suitable for the generation of wideband, dual-mode and high-purity OAM beams in the microwave and millimeter wave bands.

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