scholarly journals Compact slotted multiband patch antenna with defected ground structure for wireless communication

2020 ◽  
Vol 1706 ◽  
pp. 012150
Author(s):  
A Guruva Reddy ◽  
M Madhavi ◽  
P Rakesh Kumar
Keyword(s):  
Wireless Communication ◽  
Patch Antenna ◽  
Defected Ground Structure ◽  
Ground Structure

scholarly journals Compact Broadband Monopole Antenna for C Band Applications

2018 ◽  
Vol 7 (5) ◽  
pp. 118-123 ◽  
Author(s):  
P. Pathak ◽  
P. K. Singhal
Keyword(s):  
Wireless Communication ◽  
Numerical Simulations ◽  
Ieee 802.11 ◽  
Patch Antenna ◽  
Radiation Characteristic ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Patch ◽  
Electrical Permittivity

This paper reports a new design of broadband monopole patch antenna. The proposed antenna possess corner truncated rectangular patch with slits and defected ground structure, these modifications considerably improves the impedance bandwidth to 41.29% over a wideband (5.1–7.59 GHz). The design is appropriate for wireless communication including WLAN IEEE 802.11 g/a (5.15–5.35 GHz and 5.725–5.825 GHz) and C Band (4–8 GHz) applications. An antenna prototype is fabricated using FR-4 with an electrical permittivity of 4.4. Experimental and numerical simulations of antenna’s radiation characteristic are also reported and exhibits good concurrence.

scholarly journals A Novel Circular Slotted Microstrip-Fed Patch Antenna with three Triangle Shape Defected Ground Structure for Multiband Applications

2018 ◽  
Vol 7 (3) ◽  
pp. 56-63 ◽  
Author(s):  
A. Jaiswal ◽  
R. K. Sarin ◽  
B. Raj ◽  
S. Sukhija
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Impedance Matching ◽  
Ground Plane ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Resonant Frequencies ◽  
Wireless Applications ◽  
Rectangular Patch ◽  
Miniaturized Antenna

In this paper, a novel circular slotted rectangular patch antenna with three triangle shape Defected Ground Structure (DGS) has been proposed. Radiating patch is made by cutting circular slots of radius 3 mm from the three sides and center of the conventional rectangular patch structure and three triangle shape defects are presented on the ground layer. The size of the proposed antenna is 38 X 25 mm2. Optimization is performed and simulation results have been obtained using Empire XCcel 5.51 software. Thus, a miniaturized antenna is designed which has three impedance bandwidths of 0.957 GHz,  0.779 GHz, 0.665 GHz with resonant frequencies at 3.33 GHz, 6.97 GHz and 8.59 GHz and the corresponding return loss at the three resonant frequencies are -40 dB, -43 dB and -38.71 dB respectively. A prototype is also fabricated and tested. Fine agreement between the measured and simulated results has been obtained. It has been observed that introducing three triangle shape defects on the ground plane results in increased bandwidth, less return loss, good radiation pattern and better impedance matching over the required operating bands which can be used for wireless applications and future 5G applications.

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%. 

Reduced Cross-Polarization Patch Antenna with Optimized Impedance Matching Using a Complimentary Split Ring Resonator and Slots as Defected Ground Structure

2021 ◽  
Vol 36 (6) ◽  
pp. 718-725
Author(s):  
Narayanasamy RajeshKumar ◽  
Palani Sathya ◽  
Sharul Rahim ◽  
Akaa Eteng
Keyword(s):  
Patch Antenna ◽  
Ring Resonator ◽  
Impedance Matching ◽  
Equivalent Circuit Model ◽  
Split Ring Resonator ◽  
Cross Polarization ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Split Ring ◽  
Surface Current Density

An innovative method is proposed to improve the cross-polarization performance and impedance matching of a microstrip antenna by integrating a complimentary split ring resonator and slots as a defected ground structure. An equivalent circuit model (ECM) enables the design take into consideration the mutual coupling between the antenna patch and the Defected Ground Structure. The input impedance and surface current density analysis confirms that the integration of a CSRR within a rectangular microstrip patch antenna leads to uniform comparative cross-polarization level below 40 dB in the H-plane, over an angular range of ± 50°. Introducing parallel slots, as well, leads to a reduction of spurious antenna radiation, thereby improving the impedance matching. Measurements conducted on a fabricated prototype are consistent with simulation results. The proposed antenna has a peak gain of 4.16 dB at 2.6 GHz resonating frequency, and hence is good candidate for broadband service applications.

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