MICROSTRIP ANTENNA WITH DEFECTED GROUND STRUCTURE: A REVIEW (original) (raw)
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IJERT-Analysis and Design of Microstrip Patch Antenna with Defected Ground Structure
International Journal of Engineering Research and Technology (IJERT), 2014
https://www.ijert.org/analysis-and-design-of-microstrip-patch-antenna-with-defected-ground-structure https://www.ijert.org/research/analysis-and-design-of-microstrip-patch-antenna-with-defected-ground-structure-IJERTV3IS060888.pdf An analysis of resonant behavior of a microstrip patch antenna with defected ground structure (DGS) has been presented in this paper. It is observed that a size reduction of 56.68% has been achieved by taking out an 'I' shape slot from both the patch and the ground plane. As a result, this new antenna, exhibits multiband behavior and better resonant characteristics than its original structure. The proposed antenna not only has characteristics of good radiation, but also has an advantage of low cost and small size for S-band, C-band and X-band wireless applications.
An Overview on Defected Ground Structure in Aspect of Microstrip Patch
Micro strip patch antenna has gained a lot of attention now a day, only because of their attractive features like small size, low profile, low manufacturing cost and easy to integrate with other microwave circuits, but it has also some disadvantages like narrow bandwidth, low gain and low efficiency. Several techniques have been evolved to improve the various characteristics of antenna; they are photonic band gap (PBG), electromagnetic band gap structures (EBG), defected ground structure (DGS). Among three methods DGS is very versatile, it is being used in various microwave devices in microwave amplifiers, microwave oscillators, microwave filter design and in microwave coupling to reduce coupling etc. now a day it is being also used in the field of antenna design as to enhance bandwidth, improve gain, size reduction, harmonic suppression, reduce cross polarization etc. The equivalent of DGS is a simple LC resonator circuit. Inductance and capacitance value of ground varies with respect to the size and location of cut. As DGS is applied to the ground inductance and capacitance value increases because of that resonating frequency gets decreases. So by varying the size and location of cut in ground we can get a desired resonating frequency. In this paper, effect of various DGS in enhancement of antenna parameter is studied.
Microstrip Patch Antenna with Defected Ground Structure & Offset Feed in the field of Communication
Allied Journals, 2014
In order to improve return loss, compactness and efficiency of antenna defected ground structure has been used. The performance of antenna is characterized by the shape, dimension and location of defected structure at specific position of ground. This paper presents defected ground structure (DGS) implemented with rectangular strip in the ground plane. The design with DGS has been analyzed taking different dimensions of rectangular Slot and achieve optimized dimensions with the help of HFSS(High Frequency structural simulator).
Design and Improvement of Microstrip Patch Antenna Parameters Using Defected Ground Structure
In this paper simple RMPA is designed and its performance parameters are compared with RMPA having defected ground plane. The antenna is simulated at 2.4 GHz using CAD-FEKO simulation software .This work mainly includes modification of antenna ground plane called as Defected Ground Structure (DGS). The parameters of antenna such as Reflection coefficient, Gain, VSWR and Band width, with and without DGS are measured. The main focus of this paper is to improve band width so that patch antenna is used for wide band applications and study effect of DGS on antenna parameters.
International Journal of Electrical and Computer Engineering (IJECE), 2017
Microwave engineers have been known to designedly created defects in the shape of carved out patterns on the ground plane of microstrip circuits and transmission lines for a long time, although their implementations to the antennas are comparatively new. The term Defected Ground Structure (DGS), precisely means a single or finite number of defects. At the beginning, DGS was employed underneath printed feed lines to suppress higher harmonics. Then DGS was directly integrated with antennas to improve the radiation characteristics, gain and to suppress mutual coupling between adjacent elements. Since then, the DGS techniques have been explored extensively and have led to many possible applications in the communication industry. The objective of this paper is to design and investigate microstrip patch antenna that operates at 2.4 GHz for Wireless Local Area Network WLAN IEEE 802.11b/g/n, ,Zigbee, Wireless HART, Bluetooth and several proprietary technologies that operate in the 2.4 GHz b...
Efficiency enhancement of microstrip patch antenna with defected ground structure
2008
Defected ground structures (DGS) have been developed to improve characteristics of many microwave devices. Although the DGS has advantages in the area of the microwave filter design, microstrip antenna design for different applications such as cross polarization reduction and mutual coupling reduction etc., it can also be used for the antenna size reduction. The etching of a defect in the ground plane is a unique technique for the antenna size reduction. The DGS is easy to be an equivalent LC resonator circuit. The value of the inductance and capacitance depends on the area and size of the defect. By varying the various dimensions of the defect, the desired resonance frequency can be achieved. In this paper the effect of dumbbell shaped DGS, to the size reduction of a microstrip patch antenna is investigated. Then a cavity backed structure is used to increase the efficiency of the microstrip patch antenna, in which the electric walls are placed surrounding the patch. The simulation is carried out with IE3D full wave EM simulator.
Variations of Compact Rectangular Microstrip Antennas Using Defected Ground Plane Structure
Journal of Microwaves, Optoelectronics and Electromagnetic Applications
The defects in the form of slots have been employed in microstrip antenna either on the patch or the ground plane to yield frequency reduction. However, the reported work does not provide any comparative study that highlight upon the frequency and crosspolar level reduction achieved using these various shape slot/defects. This paper provides a thorough comparative study for different compact variations of microstrip antennas obtained using various shape slots on the ground plane. Amongst all, the optimum results are obtained for the bowtie-shaped slot on the ground plane, which offers cross-polar level reduction by 30 dB with a frequency reduction of 21%. The study also reveals that the slot on the ground plane offers better results against the slot on the patch in terms of frequency and cross-polar reduction. This kind of comparative study is not available in the literature and thus this is the novelty in the present work. An empirical formulation for the resonant length at the fundamental mode frequency for different shapes of slot/defect is proposed. The frequency calculated using them closely matches with those obtained using the simulation.
PERFORMANCE ANALYSIS OF SQUARE AND RECTANGULAR ANTENNA WITH SAME DEFECTED GROUND STRCTURE
The achievement of high data-rates and low signal power the Research and Development of Microwave engineering has been focusing to overcome some of the disadvantages. From the review of literature it's found that defected ground structure may meet the demands and has been rarely used in the improvement of antenna parameters. Intentionally created error or the slot in the ground plane of a microstrip antenna is referred as the Defected Ground Structure (DGS) and is used for different applications. DGS open field of development in the fields of microwave engineering which leads to thousands of applications and developments till date.
Designing Franklin’s Microstrip Antenna with Defected Ground Structure at MMwave Frequency
Journal of Communications, 2021
The development of telecommunication technology is very rapid at this time has entered into 4G technology. Soon, the 5G technology has a fast data access speed of at least 1 Gbps. To support 5G technology is carried out in-depth research, especially in 5G antennas. This study aims to increase the bandwidth of Franklin's five array microstrip antennas using the DGS (Defected Ground Structure) method for 5G antenna applications at an operating frequency of 28 GHz. The research was conducted by doing rectangular defects in the ground field. This research produced an enhanced bandwidth by 1.707 GHz from 1.196 GHz without DGS (Defected Ground Structure) to 2.9 GHz with DGS (Defected Ground Structure). It means a bandwidth enhancement of 142.47%. At the same time, the design achieved a gain enhancement of 141.7 %. Franklin's microstrip antenna output with DGS (Defected Ground Structure) method from the research simulation results are the bandwidth of 2.9 GHz, reflection factor of ...
IJERT-Analysis and Design of Microstrip Antenna with Defected Ground Structure for UWB Application
International Journal of Engineering Research and Technology (IJERT), 2016
https://www.ijert.org/analysis-and-design-of-microstrip-antenna-with-defected-ground-structure-for-uwb-application https://www.ijert.org/research/analysis-and-design-of-microstrip-antenna-with-defected-ground-structure-for-uwb-application-IJERTV5IS010636.pdf In this paper a small size microstrip antenna with DGS (Defected ground structure) is designed and analyzed for UWB (Ultra Wide Band) application. This antenna cover the complete frequency range of 3.1 to 10.6 GHz with a very small geometry as compared to a conventional antenna Dielectric substrate use in this antenna is Fr-4. This antenna is designed with a dimension is 36mm × 34 mm on a dielectric substrateFr-4 whose permittivity εr =4.4 and height h = 1.6 mm. The result for return losses and radiation patterns is simulated by using HFSS (High Frequency structure simulation) software. The ground element of the proposed antenna is taken in the form of defected ground structure (DGS).