Bandwidth Enhancement of Rectangular Microstrip Patch Antenna using Defected Ground Structure

2016 ◽  
Vol 3 (2) ◽  
pp. 428 ◽  
Author(s):  
Dawit Fitsum ◽  
Dilip Mali ◽  
Mohammed Ismail
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Antenna Structure ◽  
Bandwidth Enhancement ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

<p>This paper presents the bandwidth enhancement of a Proximity Coupled Feed Rectangular Microstrip Patch Antenna using a new Defected Ground Structure - an ‘inverted SHA’ shaped slot on the ground plane of the proximity coupled feed rectangular Microstrip patch antenna. The parameters such as Bandwidth, Return loss, VSWR and Radiation efficiency are improved in the proposed antenna than simple proximity coupled feed rectangular Microstrip patch antenna without Defected Ground Structure. A comparison is also shown for the proposed Microstrip patch antenna with the antenna structure without Defected Ground Structure. The proposed antenna resonates in S-band at frequency of 2.4 GHz with bandwidth of 180 MHz. A very good return loss of -47.9223 dB is obtained for the Microstrip patch antenna with an ’inverted SHA’ shaped Defected Ground Structure. Implementing an ‘inverted SHA’ shaped defect in the ground plane of the proximity coupled feed rectangular Microstrip patch antenna results in 5.3% improvement in bandwidth with 16.01% reduction in the overall area of the ground plane as compared to the Microstrip patch antenna without Defected Ground Structure.</p>

Dual-Band Proximity Coupled Feed Microstrip Patch Antenna with ‘T’ Slot on the Radiating Patch and ‘Dumbbell’ Shaped Defected Ground Structure

2016 ◽  
Vol 3 (2) ◽  
pp. 435 ◽  
Author(s):  
Dawit Fitsum ◽  
Dilip Mali ◽  
Mohammed Ismail
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

<p>This paper presents Dual-Band proximity coupled feed rectangular Microstrip patch antenna with slots on the radiating patch and Defected Ground Structure. Initially a simple proximity coupled feed rectangular Microstrip patch antenna resonating at 2.4 GHz is designed. Etching out a ‘Dumbbell’ shaped defect from the ground plane and ‘T’ shaped slot from the radiating patch of the proximity coupled feed rectangular Microstrip patch antenna, results in a Dual-Band operation, i.e., resonating at 2.4 GHz and 4.5 GHz; with 30.3 % and 18.8% reduction in the overall area of the patch and the ground plane of the reference antenna respectively. The proposed antenna resonates in S-band at frequency of 2.4 GHz with bandwidth of 123.6 MHz and C-band at frequency of 4.5 GHz with bandwidth of 200 MHz, and a very good return loss of -22.1818 dB and -19.0839 dB at resonant frequency of 2.4 GHz and 4.5 GHz respectively is obtained. The proposed antenna is useful for different wireless applications in the S-band and C-band.</p>

scholarly journals A Compact Rectangular Microstrip Patch Antenna Loaded with Stubs and Defected Partial Ground Structure for UWB Systems

2019 ◽  
Vol 8 (9S) ◽  
pp. 155-160
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Ground Structure ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna ◽  
Microstrip Feed

This paper presents the prototype and simulations of a compact rectangular microstrip patch antenna for ultra-wideband applications. The proposed antenna is printed on FR4 (Flame Retardant) substrate with relative permittivity of 4.4, dielectric loss tangent of 0.0024 and the dimensions of 57 × 25 × 1.57 mm3 . The radiating patch of the antenna is loaded with two rectangular stubs along its upper and lower edges and an equilateral triangular notch is truncated from the reduced ground plane to achieve optimum results in terms of bandwidth and reflection coefficient. It is fed along the centerline of symmetry by 50Ω microstrip feed line. The simulated return loss ( ) characteristics show that the proposed antenna has a capability of covering the wireless bands from 0.17GHz to 7.25GHz with impedance bandwidth of 7.08GHz and exhibits a peak gain of 5dB at 7.25GHz which is acceptable for UWB systems.

scholarly journals Rectangular Zigzag Microstrip Patch Antenna with Swastik Shape DGS for WLAN, C and Ku-Band Applications

2019 ◽  
Vol 8 (9S) ◽  
pp. 280-284
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Microstrip Patch ◽  
Ku Band

A triple band microstrip-fed patch antenna is presented which contains the radiating structure having rectangular zigzag shape patch and an altered ground structure with a swastic shape design. This modified ground plane actually acts as a defected ground structure (DGS). Both the modified ground plane and radiating patch are perfect electric conductors. The patch is imprinted on a substrate named as Epoxy Glass FR-4 having thickness 1.6 mm, relative permittivity 4.4, and loss tangent 0.0024. The designed microstrip patch antenna (MPA) is able to generate three specific operating bands viz. 11.9–13.6 GHz, 5.71–5.82 GHz, 4.5-4.6 GHz with adequate bandwidth of 1.64 GHz, 110 MHz and 100 MHz and corresponding return loss of -32dB, -23dB, -14.3dB respectively covering Wireless Local Area Network (WLAN), C-band and Ku-band applications. A parametric study has been performed for the rectangular slots located in the patch. Proposed MPA is simulated using Computer Simulation Technology Microwave Studio Version 14.0 (CST MWS V14.0). Lastly, the fabrication of the proposed antenna with optimized parameters has been accomplished and measured results for S-parameter magnitude have been discussed

A compact broadband microstrip patch antenna with defective ground structure for C-Band applications

2014 ◽  
Vol 4 (3) ◽  
Author(s):  
Sanyog Rawat ◽  
K. Sharma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Defected Ground Structure ◽  
Key Factors ◽  
Ground Structure ◽  
Band Frequency ◽  
Microstrip Patch ◽  
Circular Patch Antenna ◽  
Novel Design

AbstractA novel design of a circular patch antenna having defected ground structure is presented in this communication. The antenna is designed for C-band applications. A wide bandwidth of 60.3% (4.04–7.28) GHz is obtained in the C-band frequency range 4–8 GHz. It is also found through parametric analysis that shape and dimensions of the finite ground plane and slots in the patch are the key factors in improving the bandwidth of the proposed geometry. The antenna is fabricated using FR-4 substrate and parameters like return loss, VSWR and input impedance are measured experimentally.

Bandwidth enhancement of a planar monopole microstrip patch antenna

2014 ◽  
Vol 8 (2) ◽  
pp. 237-242 ◽  
Author(s):  
Sudeep Baudha ◽  
Dinesh Kumar Vishwakarma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Communication Services ◽  
Bandwidth Enhancement ◽  
Microstrip Patch ◽  
Peak Gain ◽  
Good Agreement

This paper presents a simple broadband planar monopole microstrip patch antenna with curved slot and partial ground plane. The proposed antenna is designed and fabricated on commercially available FR4 material with εr = 4.3 and 0.025 loss tangent. Bandwidth enhancement has been achieved by introducing a curved slot in the patch and optimizing the gap between the patch and the partial ground plane and the gap between the curved slot and the edge of the patch. Simulated peak gain of the proposed antenna is 4.8 dB. The impedance bandwidth (defined by 10 dB return loss) of the proposed antenna is 109% (2–6.8 GHz), which shows bandwidth enhancement of 26% as compared with simple monopole antenna. The antenna is useful for 2.4/5.2/5.8-GHz WLAN bands, 2.5/3.5/5.5-GHz WiMAX bands, and other wireless communication services. Measured results show good agreement with the simulated results. The proposed antenna details are described and measured/simulated results are elaborated.

scholarly journals Enhancement in RMPA Parameters by Rhombus Connected With Circle Meta Material Structure Using at 1.9 GHz

2016 ◽  
Vol 4 (1) ◽  
pp. 43-45
Author(s):  
Vijay Dandotiya ◽  
Chetan Pathak
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Material Structure ◽  
Radiation Characteristics ◽  
Microstrip Patch ◽  
Left Handed ◽  
Rectangular Microstrip Patch Antenna

Author proposed a new design of meta-material to provide advancement into the factors of the rectangular microstrip patch antenna (RMPA) “Enhancement in RMPA parameters Rhombus Connected With Circle Meta material structure high using at 1.9GHz” As a rectangular microstrip patch antenna is designed at a height of 1.6mm & Left handed Meta material structure is designed at a height of 3.2mm from the ground plane by using CST-MWS software. The resonance frequency 1.9GHz of the designed antenna is using as a high frequency. This paper mainly worked on return loss. The Return loss of the proposed antenna reduced to -31,16dB & bandwidth is increased up to 41.9MHz. This antenna is small size, cheap, compact and easy to fabricate, and achieve good radiation characteristics with higher return loss. In this paper return loss basically defined as system becomes stable with reduced return loss.

scholarly journals Size Reduction and Gain Enhancement of a Microstrip Antenna using Partially Defected Ground Structure and Circular/Cross Slots

2017 ◽  
Vol 7 (2) ◽  
pp. 894 ◽  
Author(s):  
Nada N. Tawfeeq
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Gain Enhancement ◽  
Microstrip Patch

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 band. The design of the proposed antenna involves using partially Defected Ground Structure and circular/cross slots and compare it to the traditional microstrip patch antenna.  The results show improvement in both the gain of 3.45 dB and the S11 response of -22.3 dB along with reduction in the overall dimensions of the antenna. As a conclusion, the performance of the antenna has been improved through the incorporation with the DGS and slots structures regarding the S11 response and the gain. The proposed antenna become more compact. Finally, the radiation pattern of proposed antenna has remained directional in spite of adding slots on the ground plane.

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