Inverted L-slot triple-band antenna with defected ground structure for WLAN and WiMAX applications

2015 ◽  
Vol 9 (1) ◽  
pp. 191-196 ◽  
Author(s):  
Alaknanda Kunwar ◽  
Anil Kumar Gautam ◽  
Binod Kumar Kanaujia
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Compact Size ◽  
Measurement Results ◽  
Good Agreement ◽  
Triple Band

To incorporate two different communication standards in a single device, a compact triple-band antenna is proposed in this paper. The proposed antenna is formed by etching an inverted L-shaped slot on the patch with defected ground structure. The antenna is targeted to excite three separate bands first from 2.39–2.51, second from 3.15–3.91, and third from 4.91–6.08 GHz that covers entire Wireless Local Area Network (WLAN) (2.4/5.2/5.8 GHz) and Worldwide Interoperability for Microwave Access (WiMAX) (2.5/3.5/5.5) bands. Thus, the proposed antenna provides feasibility to integrate WLAN and WiMAX communication standards in a single device with good radiation pattern quality. Furthermore, a prototype of the proposed antenna fabricated and measured to validate the design, shows a good agreement between simulated and measured results. The simulation and measurement results show that the designed antenna is capable of operating over the 2.39–2.51 GHz, 3.15–3.91 GHz, and 4.91–6.08 GHz frequency bands while rejecting frequency ranges between these three bands. The proposed antenna offers a compact size of 20 × 30 mm2 as compared with earlier reported papers.

scholarly journals A Compact Ultra-Wideband Monopole Antenna with Dual Bandstop Characteristics

2013 ◽  
Vol 347-350 ◽  
pp. 1695-1698 ◽  
Author(s):  
Wen Li ◽  
Jun Jun Wang ◽  
Yan Chao Sun ◽  
Xian Chao Meng
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Local Area ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Compact Size

A compact and simple ultra-wideband microstrip-fed planar antenna with double bandstop characteristic is presented. The antenna consists of a rectangular monopole and two W-shaped slots inserted into the radiating patch and the truncated ground plane. By using a W-shaped slot defected ground structure (DGS) in the feedline, a stopband of 800 MHz (from 5.1 to 5.9 GHz) for band rejection of wireless local area network (WLAN) is achieved. To obtain the other stopband (from 3.7-4.4 GHz), a same shaped slot is etched into the monopole. Moreover, the two stopbands can be controlled by adjusting the length of the slot respectively. The simulation results show that the designed antenna, with a compact size of 38.5 mm×42.5 mm, has an impedance bandwidth of 2.811 GHz for voltage standing wave ratio (VSWR) less than 2, besides two frequency stopbands of 3.74.4 GHz and 5.15.9 GHz. Moreover, the main features including omnidirectional H-plane radiation patterns and the appropriate impedance characteristic are achieved by beveling the radiating patch and the microstrip-fed line of the proposed antenna.

scholarly journals Application of Defected Ground Structure to Suppress Out-of-Band Harmonics for WLAN Microstrip Antenna

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Pravin Ratilal Prajapati
Keyword(s):  
Microstrip Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Filter Design ◽  
Stop Band ◽  
Local Area ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Cst Microwave Studio

An application of defected ground structure (DGS) to reduce out-of-band harmonics has been presented. A compact, proximity feed fractal slotted microstrip antenna for wireless local area network (WLAN) applications has been designed. The proposed 3rd iteration reduces antenna size by 43% as compared to rectangular conventional antenna and by introducing H shape DGS, the size of an antenna is further reduced by 3%. The DGS introduces stop band characteristics and suppresses higher harmonics, which are out of the band generated by 1st, 2nd, and 3rd iterations. H shape DGS is etched below the 50 Ω feed line and transmission coefficient parameters (S21) are obtained by CST Microwave Studio software. The values of equivalent L and C model have been extracted using a trial version of the diplexer filter design software. The stop band characteristic of the equivalent LC model also has been simulated by the Advance Digital System software, which gives almost the same response as compared to the simulation of CST Microwave Studio V. 12. The proposed antenna operates from 2.4 GHz to 2.49 GHz, which covers WLAN band and has a gain of 4.46 dB at 2.45 GHz resonance frequency.

CPW fed rectangular rings-based patch antenna with DGS for WLAN/UNII applications

2019 ◽  
Vol 11 (5-6) ◽  
pp. 523-531 ◽  
Author(s):  
Geetanjali Singla ◽  
Rajesh Khanna ◽  
Davinder Parkash
Keyword(s):  
Microstrip Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
High Gain ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
National Information Infrastructure ◽  
National Information

AbstractThe spectral congestion in existing Industrial, Scientific, and Medical (ISM) Wireless Local Area Network (WLAN) bands has led to the emergence of new ISM bands (Unlicensed National Information Infrastructure (UNII)) from 5.150 to 5.710 GHz. In this paper, a simple uniplanar, high gain, microstrip antenna is designed, fabricated, and tested for existing WLAN and new UNII standards. The proposed antenna provides dualband operation by joining two rectangular rings and cutting Defected Ground Structure in the Coplanar Wave Guide (CPW) feed. The experimental and simulation results show good return loss characteristics and stable radiation pattern over the desired frequency bands ranging from 2.20 to 2.65 GHz (WLAN band) at a lower frequency and from 5.0 to 5.45 GHz (UNII-1/UNII-2 bands). The measured peak gains are 5.5 and 4.9 dBi at 2.45 GHz (WLAN band) and 5.15 GHz (UNII band), respectively.

scholarly journals Compact Dual-Band Planar Inverted-e-Shaped Antenna Using Defected Ground Structure

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Wen Piao Lin ◽  
Dong-Hua Yang ◽  
Zong-De Lin
Keyword(s):  
Printed Circuit Board ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Impedance Matching ◽  
Local Area ◽  
Circuit Board ◽  
Dual Band ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure

This paper presents a novel dual-band planar inverted-e-shaped antenna (PIEA) using defected ground structure (DGS) for Bluetooth and wireless local area network (WLAN) applications. The PIEA can reduce electromagnetic interferences (EMIs) and it is constructed on a compact printed circuit board (PCB) size of 10 × 5 × 4 mm3. Experimental results indicate that the antenna with a compact meandered slit can improve the operating impedance matching and bandwidths at 2.4 and 5.5 GHz. The measured power gains at 2.4 and 5.5 GHz band are 1.99 and 3.71 dBi; antenna efficiencies are about 49.33% and 55.23%, respectively. Finally, the good performances of the proposed antenna can highly promote for mobile device applications.

scholarly journals A Compact 3.1- 18.8 GHz Triple Band Notched UWB Antenna for mobileUWB Applications

2020 ◽  
Vol 2 (1) ◽  
pp. 1-12 ◽  
Author(s):  
V N Koteswara Rao Devana ◽  
Dr. A. Maheswara Rao
Keyword(s):  
Satellite Communication ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Wide Band ◽  
Local Area ◽  
Area Network ◽  
Uwb Antenna ◽  
X Band ◽  
Compact Size ◽  
Triple Band

A compact triple band notched tapered microstrip fed Ultrawideband (UWB) antenna for wireless communication applications in C, X and Ku bands is proposed. The antenna having a compact size of 16×26 mm2, consisting of an elliptical patch and a truncated ground structure to achieve impedance of -10 dB bandwidth of 3.1 GHz to 18.8 GHz. Triple band notched characteristics are obtained from 3.7 GHz to 4.2 GHz for C band, 5.18 GHz to 5.85 GHz for Wireless Local Area Network (WLAN) and 8 GHz to 8.4 GHz for X band applications associated with the satellite communication, fabricating three inverted slots that are U-shaped in the patch of elliptical form. Good agreement between theoretical and the practical results achieved through simulation of the antenna proposed is a compatible candidate for portable ultra-wide band applications.

scholarly journals Perancangan dan Simulasi Antena Mikrostrip Patch Lingkaran Multilayer Parasitic untuk Aplikasi Wireless Local Area Network (WLAN)

2019 ◽  
Vol 18 (02) ◽  
pp. 117-125
Author(s):  
Intan Cahyaningtyas ◽  
Eva Yovita Dwi Utami
Keyword(s):  
Return Loss ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure

Pada penelitian ini dirancang antena mikrostrip patch lingkaran dengan penambahan metode multilayer parasitic dan metode DGS (Defected Ground Structure). Rancangan antena yang disimulasikan memiliki frekuensi kerja 5,8 GHz untuk aplikasi WLAN (wireless local area network). Metode multilayer parasitic digunakan untuk meningkatkan gain antena., sedangkan metode DGS dipilih untuk mengurangi gelombang permukaan yang bisa menurunkan efisiensi antena. Antena yang dirancang dan disimulasikan memiliki 3 layer. Pada layer utama ditempatkan metode DGS berbentuk persegi panjang beserta pencatu antena. Layer end-parasitic ditempatkan di bawah layer utama yang terdiri dari ground dan substrat tanpa patch. Lalu layer front-parasitic ditempatkan di atas layer utama yang terdiri dari substrat dan patch saja tanpa ground. Antena ini dirancang dengan ground berbahan tembaga dengan ketebalan 0,035 mm, memiliki substrat berbahan FR-4 Epoxy dengan ketebalan 1,6 mm dan memiliki permitivitas relatif bernilai 4,6. Setelah dirancang dan disimulasikan, simulasi menunjukkan nilai return loss -17,548 dB, nilai VSWR 1,299, dan nilai gain 7,08 dB dengan pola radiasi direksional. Dengan menggunakan metode multilayer parasitic antena mengalami total peningkatan gain sebesar 5,33 dB. Hal ini menunjukkan metode multilayer parasitic dapat digunakan untuk meningkatkan gain antena.

scholarly journals A Reconfigurable Notched Band Monopole Antenna for C-Band Applications

2021 ◽  
pp. 389-396
Author(s):  
Samar A. Refaat ◽  
◽  
Hesham A. Mohamed ◽  
Abdelhady M. Abdelhady ◽  
Ashraf S. Mohra
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Monopole Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Antenna Structure ◽  
High Frequency Structure Simulator ◽  
Antenna Performance ◽  
Measurement Results

In this paper, a wideband monopole antenna with reconfigurable frequency notch through wireless local area network (WLAN) (5.15-5.35GHz and 5.725-5.825GHz) or future wireless fidelity 6GHz (Wi-Fi-6E) (5.925-7.125GHz) band for C-band applications is presented. The conventional/basic monopole antenna consists of four-leaf clover antenna structure with cascaded feeder and Defected Ground Structure (DGS). The basic antenna is designed and then simulated using Computer Simulation Technology (CST) and High-Frequency Structure Simulator (HFSS) readymade software programs. The antenna covering an operational bandwidth extends from 4.2GHz to 9.2GHz while the gain is around 4.0dBi. Two simple resonator conductors are added near the thin feeder of antenna to realize the notched frequency. The rejected frequency within WLAN or Wi-Fi 6E bands is controlled by the resonator conductor lengths, so Positive-Intrinsic-Negative (PIN) diodes switches are inserted to achieve the required length for each rejected band. Finally, each of the basic antenna and the proposed notched antenna are fabricated and measured. The measurement results are in good agreements with the simulated results of CST and HFSS, providing good antenna performance and sharp notches with good rejection values.

Compact QMSIW-based antenna with different resonant frequencies depending on loading of metalized vias

2019 ◽  
Vol 11 (4) ◽  
pp. 420-427
Author(s):  
Divya Chaturvedi ◽  
Arvind Kumar ◽  
S. Raghavan
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Wireless Body Area Network ◽  
Local Area ◽  
Dominant Mode ◽  
Area Network ◽  
Low Profile ◽  
Measurement Results ◽  
Via Holes ◽  
Mode Tm

AbstractIn this work, simple, low profile, compact quarter-mode substrate-integrated waveguide (QMSIW)-based antennas are proposed for Wireless Local Area Network (WLAN) at 5.2/5.5 GHz and Wireless Body Area Network (WBAN) at 5.8 GHz, respectively. By implementing QMSIW technique, the electrical size of the antenna is reduced up to 1/4th of the conventional circular SIW cavities. Thanks to the quarter mode concept, the antenna size is reduced significantly by preserving its dominant mode. The resonant frequency of the dominant mode TM010 is independently tuned at 5.2, 5.5, and 5.8 GHz after loading the QMSIW cavity with metalized via holes, subsequently. The on-body performance of the antenna is verified on pork tissues at 5.8 GHz and it is found to be insensitive with respect to surroundings. The measured gain and simulated efficiency of the proposed antenna at 5.8 GHz in free space are 4.8 dBi and 92%, while in the proximity of pork tissues values are 3.25 dBi and 57%, respectively. Moreover, the measurement results demonstrate a good matching with the simulation results.

Novel dual-band multistrip monopole antenna with defected ground structure for WLAN/IMT/BLUETOOTH/WIMAX applications

2013 ◽  
Vol 6 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Jaswinder Kaur ◽  
Rajesh Khanna ◽  
Machavaram Kartikeyan
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Design Procedure ◽  
Monopole Antenna ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Simulation Results

In the present work, a novel multistrip monopole antenna fed by a cross-shaped stripline comprising one vertical and two horizontal strips has been proposed for wireless local area network (WLAN)/Industrial, Scientific, and Medical band (ISM)/International Mobile Telecommunication (IMT)/BLUETOOTH/Worldwide Interoperability for Microwave Access (WiMAX) applications. The designed antenna has a small overall size of 20 × 30 mm2. The goal of this paper is to use defected ground structure (DGS) in the proposed antenna design to achieve dual-band operation with appreciable impedance bandwidth at the two operating modes satisfying several communication standards simultaneously. The antenna was simulated using Computer Simulation Technology Microwave Studio (CST MWS) V9 based on the finite integration technique (FIT) with perfect boundary approximation. Finally, the proposed antenna was fabricated and some performance parameters were measured to validate against simulation results. The design procedure, parametric analysis, simulation results along with measurements for this multistrip monopole antenna using DGS operating simultaneously at WLAN (2.4/5.8 GHz), IMT (2.35 GHz), BLUETOOTH (2.45 GHz), and WiMAX (5.5 GHz) are presented.

Design and analysis of a metamaterial inspired dual band antenna for WLAN application

2019 ◽  
Vol 11 (4) ◽  
pp. 351-358 ◽  
Author(s):  
Priyanka Garg ◽  
Priyanka Jain
Keyword(s):  
Reflection Coefficient ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Coplanar Waveguide ◽  
Local Area ◽  
Dual Band ◽  
Band Spectrum ◽  
Area Network ◽  
Dual Band Antenna ◽  
Compact Size

AbstractIn this paper, a compact, low-profile, coplanar waveguide-fed metamaterial inspired dual-band microstrip antenna is presented for Wireless Local Area Network (WLAN) application. To achieve the goal a triangular split ring resonator is used along with an open-ended stub. The proposed antenna has a compact size of 20 × 24 mm2 fabricated on an FR-4 epoxy substrate with dielectric constant (εr) 4.4. The antenna provides two distinct bands I from 2.40 to 2.48 GHz and II from 4.7 to 6.04 GHz with reflection coefficient better than −10 dB, covering the entire WLAN (2.4/5.2/5.8 GHz) band spectrum. The performance of the proposed metamaterial inspired antenna is also studied in terms of the radiation pattern, efficiency, and the realized gain. A comparative study is also presented to show the performance of the proposed metamaterial inspired antenna with respect to other conventional antenna structures in terms of overall size, bandwidth, gain, and reflection coefficient. Finally, the antenna is fabricated and tested. The simulated results show good agreement with the measured results.

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