Wideband circularly polarised antenna with an asymmetric meandered‐shaped monopole and defected ground structure for wireless communication

2018 ◽  
Vol 12 (9) ◽  
pp. 1554-1558 ◽  
Author(s):  
Tejpal Jhajharia ◽  
Vivekanand Tiwari ◽  
Dinesh Yadav ◽  
Sanyog Rawat ◽  
Deepak Bhatnagar
Keyword(s):  
Wireless Communication ◽  
Defected Ground Structure ◽  
Ground Structure

scholarly journals Multiband and Miniaturized dual layer Antenna incorporated with FSS and DGS

2018 ◽  
Vol 7 (1) ◽  
pp. 1-6 ◽  
Author(s):  
S. Sah ◽  
M. R. Tripathy ◽  
A. Mittal
Keyword(s):  
Wireless Communication ◽  
Frequency Selective Surfaces ◽  
Printed Antenna ◽  
Defected Ground Structure ◽  
Patch Area ◽  
Ground Structure ◽  
X Band ◽  
Type Frequency ◽  
Frequency Selective

A novel dual  layer rectangular printed Antenna based on loop type Frequency selective surfaces with five concentric rings and I shaped defected ground structure (DGS) is designed and investigated. The deigned antenna is tested for application in C band, WiFi devices and some cordless telephones and X band radiolocation, airborne and naval radars as multiband  operational frequencies are at 5.5GHz, 6.81GHz, 9.3GHz and thus covers two wireless communication band C Band (4 to 8GHz ) and  X band (8 to 12 GHz) The bandwidth is 200MHz, 300MHz and 1GHz respectively and measured gain of this designed antenna are 2.42dBi against 5.5GHz, 2.80dBi against 6.81GHz, 6.76dBi against 9.3GHz. The proposed antenna in addition to multiband operation also exhibits minituarization.The Floquet port technique is used to analyse concentric rings. The Results comparison of proposed structure with the basic dual layer antenna resonaing at 5.5GHz  shows the patch area is reduced by 58.15% while the volume of the antenna is reduced by 81.5%. 

scholarly journals Compact Broadband Monopole Antenna for C Band Applications

2018 ◽  
Vol 7 (5) ◽  
pp. 118-123 ◽  
Author(s):  
P. Pathak ◽  
P. K. Singhal
Keyword(s):  
Wireless Communication ◽  
Numerical Simulations ◽  
Ieee 802.11 ◽  
Patch Antenna ◽  
Radiation Characteristic ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Patch ◽  
Electrical Permittivity

This paper reports a new design of broadband monopole patch antenna. The proposed antenna possess corner truncated rectangular patch with slits and defected ground structure, these modifications considerably improves the impedance bandwidth to 41.29% over a wideband (5.1–7.59 GHz). The design is appropriate for wireless communication including WLAN IEEE 802.11 g/a (5.15–5.35 GHz and 5.725–5.825 GHz) and C Band (4–8 GHz) applications. An antenna prototype is fabricated using FR-4 with an electrical permittivity of 4.4. Experimental and numerical simulations of antenna’s radiation characteristic are also reported and exhibits good concurrence.

scholarly journals Design of Compact MIMO Antenna for 5G Mobile Terminal

2020 ◽  
Vol 9 (3) ◽  
pp. 202-207
Keyword(s):  
Wireless Communication ◽  
Ground Plane ◽  
Research Work ◽  
Mobile Terminal ◽  
Frequency Range ◽  
Defected Ground Structure ◽  
Electronic Components ◽  
Ground Structure ◽  
Mimo Antenna ◽  
Compact Size

This report gives the research work carried out for design and analysis of MIMO antenna using two identical Microstrip slot radiators having enhanced isolation. The slot radiators offer compact size in order to accommodate other electronic components for reduction of volume of the wireless communication system. The defected ground structure is formed on the ground plane in between the antenna elements and feed lines to improve the isolation between them. The substrate used for constructing the antenna is FR-4 having the measurements of 26mm x 22mm x 0.8mm and it has the relative permittivity of 4.4. The printed microfilm strip etched on the opposite side of the substratum is used to couple the signal to each antenna. The HFSS software is used in this paper for designing the antenna and for checking the performance of the antenna. The -10dB bandwidth is 1.1GHz in the frequency range of 3.1 GHZ to 4.2GHz. The maximum isolation obtained after simulation is -23.1dB at 3.13GHz. The maximum gain of 2.26dB is obtained. Simulated radiation diagram of the designed antenna indicates that it is a good radiator for 5G applications in the sub 6GHz frequency band.

scholarly journals Frequency Reconfigurable Antenna Array Using Defected Ground Structure for Outdoor Wireless Communication Systems

2019 ◽  
Vol 9 (1) ◽  
pp. 33
Author(s):  
Mohd Aziz Aris ◽  
Mohd Tarmizi Ali ◽  
Nurulhuda Abd Rahman ◽  
Idnin Pasya Ibrahim
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Array Antenna ◽  
Wireless Communication Systems ◽  
Reconfigurable Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Resonant Frequencies ◽  
Frequency Reconfigurable Antenna ◽  
Good Agreement

This paper proposes frequency reconfigurable antenna for outdoor wireless communication systems, the 4 x 4 array antenna has designed at two resonant frequencies 7.5 GHz and 8.85 GHz. The periodic dumbbell geometry etched on the ground layer newly proposed with dual functionality, to control desired frequency and to couple radiating patches at the top substrate with feeding line at the bottom substrate. The reconfigurability of the patch antenna is controlled by utilizing the copper pad of the feeding network with OPEN and SHORT states. The reconfigurable antenna has been simulated and optimized using Computer Simulation Technology (CST) to get the desired responds. The good agreement between simulation and measured results indicates that the frequency reconfigurable patch array antenna using Periodic Dumbbell Slotted Aperture Structure (FRPDSA) is feasible to support outdoor wireless communication systems.

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