Graphene-based wide band semi-flexible array antenna with parasitic patch for smart wireless devices

Author(s):  
Ronak Vashi ◽  
Trushit Upadhyaya ◽  
Arpan Desai

Abstract In this paper, a semi-flexible 2 × 1 array antenna is proposed with epoxy glass fiber and graphene as patch and ground, respectively. Microstrip patch antenna with a center parasitic patch of half-wavelength and slot in the radiating patch have been incorporated for the bandwidth enhancement in order of 79.56% (2.21–5.13 GHz). The antenna has an overall size of 0.30λ × 0.24λ at a lower frequency of operation (2.45 GHz). The incorporation of slotted Graphene in radiating element leads to a wideband regime with satisfactory gain values of 2.73 and 3.744 dBi at 2.40 and 4.0 GHz, respectively. Antenna radiation efficiency in the range of 78% with linear polarization makes the antenna appropriate for WLAN band and smart wireless devices application.

Author(s):  
Akhila John Davuluri ◽  
P. Siddaiah

This paper proposes a microstrip patch antenna (MSPA) in the Ku band for satellite applications. The antenna is small in size with dimensions of about 40 mm×48 mm×1.59 mm and is fed with a coaxial cable of 50 Ω impedance. The proposed antenna has a wide bandwidth of 3.03 GHz ranging from 12.8 GHz to 15.8 GHz. To realize the characteristics of wideband the techniques of defective ground structure (DGS) and etching slots on the radiating element are adopted. The antenna is modeled on the FR4 substrate. A basic circular patch is selected for the design of a dual-frequency operation and in the next step DGS is introduced into the basic antenna and enhanced bandwidth is achieved at both the frequencies. To attain wider bandwidth two slots are etched on the radiating element of which one is a square ring slot and the second one is a circular ring slot. The novelty of the proposed antenna is a miniaturized design and unique response within the Ku band region which is applicable for wireless UWB applications with VSWR <2 and an average gain of 3.6 dB.


Microstrip patch antenna for enhancement bandwidth has been presented based on stacked configuration. The microstrip patch antenna is a wide shaft narrowband antenna. it is made effectively by the printed circuit innovation and have the metallic layer at the two sides of the substrate, a transmitting patch on the upper side though metal plate on ground. For the improvements of bandwidth, there is influenced a more no. of slot on the ground plate to accomplish Ultra wide band (UWB). The UWB antennas is based on the micro strip patch antenna concept which is based on stacking. For the enhancement of bandwidth of the antenna, stacking is used in the designing of UWB antenna. In this research manuscript stack parasitic patch antenna is presented to enhance the bandwidth of the antennas different slot at ground. The proposed design is implemented in the CADFEKO software. For the design and analysis of a wide range of electromagnetic problem CADFEKO software is very useful having many applications to simulate 3D electromagnetic circuit included antenna design, micro strip antenna and circuits. The simulation results shows the enhanced antenna bandwidth of 14.5 GHz from 2.6 to 16.8 GHz..


2015 ◽  
Vol 4 (3) ◽  
pp. 9-14
Author(s):  
Rajeewa Kumar Jaisawal ◽  
◽  
Arvind Kumar Pandey ◽  
R. K. Chauhan ◽  
◽  
...  

2018 ◽  
Author(s):  
Khanda Anum ◽  
Milind Saurabh Singh ◽  
Rajan Mishra ◽  
G. S. Tripathi

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