Bandwidth enhancement of a rectangular patch antenna in X band by introducing diamond shaped slot and ring in patch and defected ground structure

2017 ◽  
Author(s):  
Tahsin Ferdous Ara Nayna ◽  
Feroz Ahmed ◽  
Emranul Haque
Keyword(s):  
Patch Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Bandwidth Enhancement ◽  
Rectangular Patch ◽  
X Band

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.

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>

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.

Gain enhancement over a wideband in CPW-fed compact circular patch antenna

2013 ◽  
Vol 6 (5) ◽  
pp. 497-503 ◽  
Author(s):  
Kirti Vyas ◽  
Garima Sanyal ◽  
Arun Kumar Sharma ◽  
Pramod Kumar Singhal
Keyword(s):  
Patch Antenna ◽  
Coplanar Waveguide ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Radiation Characteristics ◽  
Circular Patch ◽  
Gain Enhancement ◽  
X Band ◽  
Circular Patch Antenna

The present paper reports the gain enhancement over a wideband (12–15 GHz) in a coplanar waveguide (CPW)-fed circular patch antenna with circular defected ground structure (DGS). Two compact coplanar circular antennas have been designed and fabricated with and without DGS of same volume 18 × 20 × 1.6 mm3, built over FR4-epoxy substrate (εr = 4.4). Gain enhancement has been achieved by optimizing the current distribution with suitable DGS. For this purpose, structural designs have been optimized by parametric simulations in HFSS and CST MWS. Both the antennas can perform well in variety of wireless communication including WLAN IEEE 802.11 g/a (5.15–5.35 GHz and 5.725–5.825 GHz) and X-band applications including short range, tracking, missile guidance, and radar communication that ranges roughly from 8.29 to 11.4 GHz. The measured experimental results show that impedance bandwidth (S11 < −10 dB) of antenna with DGS is 100%. The antenna with DGS offers gain improvement by 2.7 dB for 13 GHz and 7 dB for 14 GHz. The performance of antenna with DGS is compared to conventional CPW-fed circular patch antenna (without DGS) in terms of reflection coefficient, radiation characteristics, and gain.

Design of S-Band Antenna With L-Shaped Slits on Rectangular Patch With Defected Ground Structure

2018 ◽  
Vol 7 (2) ◽  
pp. 50-58
Author(s):  
Ketavath Kumar Naik ◽  
Ravi Kumar Palla ◽  
Sriram Sandhya Rani ◽  
Dattatreya Gopi
Keyword(s):  
Resonance Frequency ◽  
Radiation Pattern ◽  
Patch Antenna ◽  
Return Loss ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Patch ◽  
Antenna Model

Monopole L-shaped slits are embedded on rectangular patch antenna is designed for S-band applications. The proposed antenna is a square patch radiator with four L-shaped slits are presented. The proposed antenna radiates at 3GHz resonance frequency with bandwidth of 1.9GHz and -26.4dB return loss. The impedance bandwidth is enhanced 62.7% with proposed antenna model. The proposed L-shaped slit patch antenna is small in size and compact. The radiation pattern is presented in the results and it works at S-band applications.

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