DESIGN AND ANALYSIS OF META-MATERIAL BASED WLAN ANTENNA

2016 ◽  
Vol 78 (4-3) ◽  
Author(s):  
Muhammad Aamir Afridi ◽  
Sadiq Ullah
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Field Performance ◽  
Far Field ◽  
Electromagnetic Bandgap ◽  
Conventional Counterpart

In this paper, a 2.42 GHz micro-strip patch antenna is designed and analyzed using a conventional and a metamaterial (artificial) based Electromagnetic Bandgap (EBG) ground planes. The directivity, return loss and VSWR of the conventional 2.42 GHz patch antenna were found to be 5.23dB, -13.2dB, and 1.5 respectively. The proposed antenna then being mounted on a Mushroom-type EBG structures (artificial ground plane) produced better far-field performance as compared to conventional counterpart i.e. the return loss, directivity and VSWR were improved by 80.3%, 58.5% and 24.6%. The WLAN antenna was designed and tested on a miniaturized slotted EBG structure. The slotted EBG was 11.4 % compact as compared to the mushroom structure. The directivity, return loss and VSWR of the antenna using the slotted EBG are improved by be 51%, 31.8%, 15.4% respectively as compared to the patch conventional WLAN patch antenna. The antenna can be used for WLAN applications.

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 Trapezoid Shape Patch Antenna for WLAN Application

2019 ◽  
Vol 8 (9S) ◽  
pp. 512-516
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Local Area ◽  
Design Parameters ◽  
Impedance Bandwidth ◽  
Area Network ◽  
S Parameter

In this paper,CPW fed Trapezoid shape patch antenna is analyzed and investigated for Wireless Local Area Network (WLAN) application. The proposed antenna is fabricated on FR4 substrate having dimensions of 19mm ×21.2mm ×1.6mm. It resonates at 5.44 GHz frequency with peak return loss of 25.8 dB. The parametric study of proposed antenna is carried out to understand the effect of different values of ground plane on the impedance bandwidth, return loss of the antenna andalso to optimize the antenna parameters. The CPW-fed is used to enhance the bandwidth and to reduce the return loss of the antenna. The importance of different design parameters like current distribution, S-parameter, gain, and radiation pattern are studied. The results of the proposed antenna are useful for WLAN Application.

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>

Circularly Polarized Rectangular Microstrip Patch Antenna with Finite Ground Plane

2015 ◽  
Vol 4 (2) ◽  
pp. 74
Author(s):  
Sanyog Rawat ◽  
Kamlesh Kumar Sharma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Microstrip Patch ◽  
Rectangular Patch

<p class="Abstract"><span style="font-weight: normal;">In this paper a new geometry of patch antenna is proposed with improved bandwidth and circular polarization. The radiation performance of circularly polarized rectangular patch antenna is investigated by applying IE3D simulation software and its performance is compared with that of conventional rectangular patch antenna.</span> <span style="font-weight: normal;">Finite Ground truncation technique is used to obtain the desired results. The simulated return loss, axial ratio and smith chart with frequency for the proposed antenna is reported in this paper. It is shown that by selecting suitable ground-plane dimensions, air gap and location of the slits, the impedance bandwidth can be enhanced upto 10.15 % as compared to conventional rectangular patch (4.24%) with an axial ratio bandwidth of 4.05%.</span></p><p> </p><p> </p>

scholarly journals Performance Comparison of Swastika and Rectangular Shaped Microstrip Patch Antenna

2018 ◽  
Vol 1 (1) ◽  
pp. 11-14
Author(s):  
Suroj Burlakoti ◽  
Prakash Rai
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Performance Comparison ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch

In this paper, Microstrip patch antennas with rectangular and swastika shape of patch are designed and its performance parameters are compared with each other. Rectangular and Swastika shaped patch are considered in this paper with common rectangular ground plane. The antenna is simulated at 2.4 GHz using HFSS simulation software. This work mainly includes modification of antenna patch to improve the antenna parameters. The parameters of antenna such as Return loss, VSWR Bandwidth and radiation pattern are compared using simulation. The performance of Swastika shaped antenna was found to be better than rectangular shaped microstrip patch antenna with improved Return Loss, VSWR, Bandwidth and Radiation Pattern.

scholarly journals Metamaterial Loaded Rectangular Patch Antenna for Wireless Communication Application

2021 ◽  
Vol 9 (3) ◽  
pp. 193-197
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Negative Permittivity ◽  
Electromagnetic Analysis ◽  
Analysis Tool ◽  
Network Analyzer ◽  
Microstrip Patch ◽  
Rectangular Patch

In this paper, a metamaterial based compact multiband rectangular microstrip patch antenna is proposed. The return loss of metamaterial loaded microstrip patch antenna obtained at the resonant frequency 2.4GHz. The metamaterial structure printed on FR4 substrate at hight of 1.6mm from the ground plane. The FR4 substrate has 4.4 dielectric constant.These metamterial structures are periodic in nature and possesses negative permittivity and negative permeability. The greatest advantage of metamaterial loading will be miniaturization. This metamterial loaded rectangular patch antenna is simulated and tested using HFSS Simulator, where an electromagnetic analysis tool is used. The fabricated antennas results are measured using Vector Network Analyzer (VNA).

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>

Conformable Patch Antenna Array for Energy Harvesting

2009 ◽  
Vol 1205 ◽  
Author(s):  
Akshat C Patel ◽  
Miral P Vaghela ◽  
Hassan Bajwa ◽  
Prabir K Patra
Keyword(s):  
Energy Harvesting ◽  
Antenna Array ◽  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Antenna Design ◽  
Potential Candidate ◽  
Ieee 802.11B ◽  
Ism Band ◽  
Working Distance

AbstractCarbon nanotube (CNT) has emerged as potential candidate for replacement of conventional metal patch in antenna application. The principal objective of our research is to develop nanostructured flexible patch antenna array for multi- frequency operation in industrial, scientific and medical (ISM) band. Patch antenna design using CNT on flexible cotton sheets has been simulated with cotton as a substrate and CNT as conductive patch and ground plane. Due to high conformability and conductivity of CNT all antenna parameters like VSWR, return loss, gain and radiation pattern obtained using FEKO EMSS software meet design criteria. Our simulated antenna design shows a return loss less than -10 dB and VSWR less than 2 at 2.06 GHz, 2.38 GHz and 2.49 GHz. We have also simulated a versatile and conformable antenna design where the whole geometry is rolled up like patch array on cylindrical surface. Conformability to curved surfaces and integration with the structure brings about a unique antenna design. An inset fed square patch array is also proposed for RF energy harvesting operating in the 2.45 GHz ISM band that can harvest and store energy from the surrounding environment. Simulation result shows that dc voltage of 0.215 V can be achieved at -6 dbm received energy level at 2.45 GHz IEEE 802.11b band. This would correspond to potential working distance of 10m.

Miniaturized curved slotted patch antenna over a fractalized EBG ground plane

2016 ◽  
Vol 9 (3) ◽  
pp. 599-605 ◽  
Author(s):  
Saurabh Kumar ◽  
Dinesh Kumar Vishwakarma
Keyword(s):  
Patch Antenna ◽  
Communication Systems ◽  
Low Cost ◽  
Impedance Matching ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Electromagnetic Bandgap ◽  
Microstrip Patch ◽  
Compact Size ◽  
Improved Performance

In this paper, a miniaturized coaxial feed curved-slotted microstrip patch antenna over a fractalized uniplanar compact electromagnetic bandgap (F-UC-EBG) ground plane is proposed and investigated. Compact size is achieved by cutting the curved slots along the orthogonal directions of the patch radiator. The curved-slotted microstrip patch antenna is 38.30% miniaturized as compared with the conventional microstrip patch antenna resonating at 2.38 GHz. Furthermore, the ordinary ground plane of the curved slotted patch antenna is replaced by the F-UC-EBG ground plane. Due to the slow wave phenomenon created in the F-UC-EBG structure and the better impedance matching at the lower frequency further miniaturization and improved performance are obtained. The proposed antenna shows 74.76% miniaturization as compared with the conventional microstrip patch antenna resonating at 1.57 GHz and has 2.61% 10-dB fractional bandwidth, 1.49 dB gain, and 81.59% radiation efficiency. The proposed antenna is fabricated on a low-cost FR4 substrate having an overall volume of 0.184λ0 × 0.184λ0 × 0.0236λ0 at 1.57 GHz GPS band. The measured and simulated results are in good agreement and predicting appropriateness of the antenna in portable and handheld communication systems for GPS applications.

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.

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