Comparison and Analysis of Different Feeding Techniques for MIMO Antenna's UWB Applications with Defected Ground Structure

2021 ◽  
Author(s):  
K N Mohan ◽  
K. Himaja Reddy ◽  
N. Yasaswini
Keyword(s):  
Defected Ground Structure ◽  
Ground Structure ◽  
Comparison And Analysis ◽  
Uwb Applications ◽  
Feeding Techniques

scholarly journals DGS based monopole circular-shaped patch antenna for UWB applications

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Dattatreya Gopi ◽  
Appala Raju Vadaboyina ◽  
J. R. K. Kumar Dabbakuti
Keyword(s):  
Patch Antenna ◽  
Substrate Material ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Compact Structure ◽  
Resonant Frequencies ◽  
Low Profile ◽  
Uwb Applications ◽  
Good Agreement

AbstractA simple low profile defected ground structure based monopole circular-shaped patch antenna is proposing for ultrawide-band applications. The design allows for a simple and compact structure on the FR-4 substrate material. The proposed design initially has a meager antenna gain and bandwidth. To increase the antenna bandwidth and gain, the defective ground structure is implemented with four dumble-shaped slots. Parametric analysis is considered to find the radius of circular patch for tuning of UWB frequency applications. The proposed MCP antenna resonates at 2.9 GHz, 9.1 GHz frequencies with a S11 of − 34.84 dB, − 33.74 dB, respectively, and achieves 8.1 GHz (2.5–10.6 GHz) impedance bandwidth concerning the − 10 dB reference line of the reflection coefficient. The gains are 8.4 dBi, 8.2 dBi for the two resonant frequencies, and the radiation patterns are semi-omnidirectional, omnidirectional. The proposed antenna has-been validated by observing good agreement between the simulation and the measured results.

scholarly journals V-Shaped Monopole Antenna with Chichena Itzia Inspired Defected Ground Structure for UWB Applications

2020 ◽  
Vol 65 (1) ◽  
pp. 19-32
Author(s):  
Naeem Ahmad Jan ◽  
Saad Hassan Kiani ◽  
Fazal Muhammad ◽  
Daniyal Ali Sehrai ◽  
Amjad Iqbal ◽  
...  
Keyword(s):  
Monopole Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Uwb Applications

scholarly journals Microstrip Rectangular Monopole Antennas with Defected Ground for UWB Applications

2017 ◽  
Vol 7 (4) ◽  
pp. 2027 ◽  
Author(s):  
S. Elajoumi ◽  
A. Tajmouati ◽  
A. Errkik ◽  
Am. Sanchez ◽  
M. Latrach
Keyword(s):  
Wide Band ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Patch ◽  
Ansoft Hfss ◽  
Monopole Antennas ◽  
Compact Antennas ◽  
Uwb Applications ◽  
Good Agreement

This paper presents the design of new compact antennas for ultra wide band applications. Each antenna consists of a rectangular patch fed by 50Ω microstrip transmission line and the ground element is a defected ground structure (DGS). The aim of this study is to improve the bandwidth of these antennas by using DGS and the modification geometry of rectangular structure, which gives new compact antennas for UWB applications. The input impedance bandwidth of the antennas with S11<-10dB is more than 10GHz, from 3GHz to more than 14 GHz. The proposed antennas are investigated and optimized by using CST microwave studio, they are validated by using another electromagnetic solver Ansoft HFSS. The measured parameters present good agreement with simulation. The final antenna structures offer excellent performances for UWB system.

Measurement Analysis of Ultra-Wideband Monopole Antenna With Defected Ground Structure

2017 ◽  
Vol 6 (1) ◽  
pp. 1-12
Author(s):  
Madan Kumar Sharma ◽  
Mithilesh Kumar ◽  
J.P. Saini
Keyword(s):  
Monopole Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Radiation Characteristics ◽  
Measurement Analysis ◽  
Low Profile ◽  
X 24 ◽  
Uwb Applications

This article describes how a compact, low profile Ultra-wideband (UWB) monopole antenna with a defected ground structure is designed and demonstrated experimentally. The design and experimentation activities have been carried out with the help of a CST Microwave studio tool. The UWB characteristics of the proposed antenna are achieved with a modification of the ground structure of the referenced antenna with novel L shaped defected ground structure (DGS). Both antennas are fabricated on the same substrate with the dimensions of 28.3 x 24 mm2. The comparative analysis of the results for both antennas clearly indicate that the proposed UWB monopole antenna enhanced the impedance bandwidth from 3.7 GHz – 14.9 GHz without DGS and to 3.4 GHz – 20 GHz with DGS. The enhanced bandwidth, constant group delay and good radiation characteristics of the proposed antenna have identified it as a good candidate for portable UWB applications.

Reconfigurable microstrip slot antenna with DGS for UWB applications

2017 ◽  
Vol 9 (7) ◽  
pp. 1517-1522 ◽  
Author(s):  
Mehri Borhani Kakhki ◽  
Pejman Rezaei
Keyword(s):  
Simple Structure ◽  
Ground Plane ◽  
Local Area ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Antenna Structure ◽  
Rectangular Slot ◽  
Uwb Applications

In this paper, a frequency reconfigurable microstrip slot antenna for ultra-wideband applications with switchable band-notch functions is designed and manufactured. To generate a wide usable fractional bandwidth of 3 to over 13.6 GHz, square patch transforms to a fork-shaped patch, also two triangular-shaped strips have been added at above sections of rectangular slot on the ground plane. Band rejections are obtained by adding two inverted L-shaped strips in the fork-shaped patch and one L-shaped defected ground structure. Moreover, by implementation of two PIN diodes within the antenna structure, four switchable frequency responses are achieved. The designed antenna has simple structure and a small size of 20 × 20 × 0.8 mm3 while providing band rejection characteristics at WiMAX (Worldwide Interoperability for Microwave Access) and WLAN (Wireless Local Area Networks) systems.

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