scholarly journals Super Wide Band, Defected Ground Structure (DGS), and Stepped Meander Line Antenna for WLAN/ISM/WiMAX/UWB and other Wireless Communication Applications

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1735 ◽  
Author(s):  
Shahid Ullah ◽  
Cunjun Ruan ◽  
Muhammad Shahzad Sadiq ◽  
Tanveer Ul Haq ◽  
Ayesha Kosar Fahad ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Group Delay ◽  
Phase Variation ◽  
Wide Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Waveguide Transformer ◽  
The Time Domain ◽  
Domain Performance ◽  
Meander Line

This paper presents a new shape (s-shape monopole) of a super wideband antenna using stepped meander lines, a quarter waveguide transformer feeding line, and a defected ground structure (DGS). The antenna will be used for multiple wireless communication applications like WIMAX/WLAN/ISM/UWB, and also for several wireless communication applications. The total dimensions of the proposed antenna are 35 mm × 35 mm × 1.57 mm or 0.36 λo × 0.36 λo × 0.016 λo, which are the corresponding electrical dimensions with free-space wavelength (λo) at the lower operating frequency. The antenna is designed and simulated into two steps: the first (Antenna 1) covers a bandwidth of 18.2 GHz, while the second (Antenna 2, using DGS) covers a super wide bandwidth of 37.82 GHz (3.08–40.9 GHz). The measured fractional bandwidth and bandwidth ratio of the antenna are 174.68% and 13.009:1, respectively, which is operating from 3.09–40.2 GHz. The maximum calculated gain and efficiency are 5.9 dBi and 92.7%, respectively. The time-domain performance is good due to the calculation of the system fidelity factor, group delay, and its linear and constant phase variation.

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%. 

An On-Chip Bandpass Filter Using a Broadside-Coupled Meander Line Resonator With a Defected-Ground Structure

2017 ◽  
Vol 38 (5) ◽  
pp. 626-629 ◽  
Author(s):  
Yi Zhong ◽  
Yang Yang ◽  
Xi Zhu ◽  
Eryk Dutkiewicz ◽  
Kam Man Shum ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
On Chip ◽  
Meander Line

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 Time-Domain Investigation of Switchable Filter Wide-Band Antenna for Microwave Breast Imaging

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4302 ◽  
Author(s):  
Amir Haider ◽  
MuhibUr Rahman ◽  
Mahdi Naghshvarianjahromi ◽  
Hyung Seok Kim
Keyword(s):  
Time Domain ◽  
Breast Imaging ◽  
Wide Band ◽  
Tumor Detection ◽  
Ultra Wideband ◽  
Good Time ◽  
Area Network ◽  
Microwave Breast Imaging ◽  
The Time Domain ◽  
Domain Performance

This paper investigates the time-domain performance of a switchable filter impulse radio ultra-wideband (IR-UWB) antenna for microwave breast imaging applications. A miniaturized CPW-fed integrated filter antenna with switchable performance in the range of the Worldwide Interoperability for Microwave Access (WiMAX) and Wireless Local Area Network (WLAN) bands could operate well within a 3.0 to 11 GHz frequency range. The time-domain performance of the filter antenna was investigated in comparison to that of the designed reference wideband antenna. By comparing both antennas’ time-domain characteristics, it was seen that the switchable filter antenna had good time-domain resolution along with the frequency-domain operation. Additionally, the time-domain investigation revealed that the switchable filter wide-band antenna performed similarly to the reference wide band antenna. This antenna was also utilized for a tumor detection application, and it was seen that the switchable filter wide-band antenna could detect a miniaturized irregularly shaped tumor easily, which is quite promising. Such an antenna with a good time-domain resolution and tumor detection capability will be a good candidate and will find potential applications in microwave breast imaging.

Sign in / Sign up

Export Citation Format

Share Document