Square/hexagonal split ring resonator loaded exponentially tapered slot ultra wideband (UWB) antenna with frequency notch characteristics

2017 ◽  
Vol 59 (6) ◽  
pp. 1241-1245 ◽  
Author(s):  
Chinmoy Saha ◽  
Priyanka Natani ◽  
Latheef A. Shaik ◽  
Jawad Y. Siddiqui ◽  
Y.M.M. Antar
2015 ◽  
Vol 713-715 ◽  
pp. 1265-1268
Author(s):  
Xiang Lai Zheng ◽  
Qing Fan Shi ◽  
Dan Feng Lu ◽  
Chang Yi Ji

With the increasing demand for different applications of antennas, especially multi-band and ultra-wideband antenna, we propose a novel tri-band, ultra-wideband (UWB) antenna with deformed split ring resonator (DSRR). The antenna consists of a partly covered ground plane and a deformed split ring resonator. By integrating the partly covered ground plane and the deformed split ring resonator and optimizing with CST Microwave Studio numerically, the proposed antenna produces three working bands ranging from 2.87GHz to 3.92GHz, 5.08 to 6.30GHz and 7.55 to 9.32GHz, which also satisfy the requirement of UWB. The three working bands cover the WIMAX band in 3.5GHz, the WLAN bands in 5.2/5.8GHz, and X-band, respectively. The radiation pattern is omnidirectional and the direction gain at every frequency is above 3.2 dBi. So the proposed antenna is suitable for multi-band communication applications.


2020 ◽  
Vol 55 (4) ◽  
Author(s):  
Amer Abbood Al-Behadili ◽  
Adham R. Azeez ◽  
Sadiq Ahmed ◽  
Zaid A. Abdul Hassain

This paper presents an ultra-wideband tapered slot patch antenna with bi-directional radiation, reconfigurable for dual band-notched capability and fed by coplanar waveguide. The proposed antenna showed excellent ultra-wideband characteristics with bandwidth of (1.9–12 GHz). In order to reduce the interference of the narrow band communications represented by Worldwide Interoperability for Microwave Access radiation in the range (3.4–3.9) GHz and standard IEEE 802.11a. application (from 5.1 GHz to 6.1 GHz), the antenna was accompanied with adjustable dual-stop band capability in these bands. The dual-band notches are achieved with aid of inserting a parasitic single split ring resonator and etching a single circular complementary circle split ring resonator. The proposed antenna used epoxy (FR4) substrate material with ????r= 4.4 and dimensions of .


Frequenz ◽  
2016 ◽  
Vol 70 (11-12) ◽  
Author(s):  
D. Khedrouche ◽  
T. Bougoutaia ◽  
A. Hocini

AbstractIn this paper, a miniaturized microstrip patch antenna using a negative index metamaterial with modified split-ring resonator (SRR) unit cells is proposed for ultra-wideband (UWB) applications. The new design of metamaterial based microstrip patch antenna has been optimized to provide an improved bandwidth and multiple frequency operations. All the antenna performance parameters are presented in response-graphs. Also it is mentioned that the physical dimensions of the metamaterial based patch antenna are very small, which is convenient to modern communication. A 130 % bandwidth, covering the frequency band of 2.9–13.5 GHz, (for return loss less than or equal –10 dB) is achieved, which allow the antenna to operate in the Federal Communication Commission (FCC) band. In addition, the antenna has a good radiation pattern in the ultra-wide band spectrum, and it is nearly omnidirectional.


Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2959 ◽  
Author(s):  
Mohammad Islam ◽  
Farhad Ashraf ◽  
Touhidul Alam ◽  
Norbahiah Misran ◽  
Kamarulzaman Mat

A compact ultrawideband (UWB) antenna based on a hexagonal split-ring resonator (HSRR) is presented in this paper for sensing the pH factor. The modified HSRR is a new concept regarding the conventional square split-ring resonator (SSRR). Two HSRRs are interconnected with a strip line and a split in one HSRR is introduced to increase the electrical length and coupling effect. The presented UWB antenna consists of three unit cells on top of the radiating patch element. This combination of UWB antenna and HSRR gives double-negative characteristics which increase the sensitivity of the UWB antenna for the pH sensor. The proposed ultrawideband antenna metamaterial sensor was designed and fabricated on FR-4 substrate. The electrical length of the proposed metamaterial antenna sensor is 0.238 × 0.194 × 0.016 λ, where λ is the lowest frequency of 3 GHz. The fractional bandwidth and bandwidth dimension ratio were achieved with the metamaterial-inspired antenna as 146.91% and 3183.05, respectively. The operating frequency of this antenna sensor covers the bandwidth of 17 GHz, starting from 3 to 20 GHz with a realized gain of 3.88 dB. The proposed HSRR-based ultrawideband antenna sensor is found to reach high gain and bandwidth while maintaining the smallest electrical size, a highly desired property for pH-sensing applications.


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