scholarly journals A Wider Impedance Bandwidth Dual Filter Symmetrical MIMO Antenna for High-Speed Wideband Wireless Applications

Symmetry ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 29
Author(s):  
Manish Sharma ◽  
Prem Chand Vashist ◽  
Ibrahim Alsukayti ◽  
Nitin Goyal ◽  
Divya Anand ◽  
...  
Keyword(s):  
High Speed ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Rectangular Slot ◽  
Mimo Antenna ◽  
Wireless Applications ◽  
Radiating Element

This research article reports a compact fractal 4 × 4 UWB extended bandwidth MIMO antenna with physical dimensions of 44 × 44 mm2 for high-speed wireless applications. The reported antenna comprises four fractal radiating elements that are symmetrical and placed orthogonal to each other with a respective rectangular ground printed on the opposite plane. A higher isolation is achieved between the radiating elements by the placement of a fractal patch orthogonally and no separate decoupling structure is required. The antenna offers a −10 dB transmission capacity of 2.84–15.88 GHz. The fractal radiating element, which is embedded by an inverted T-type stub placed within a rectangular slot and an etched rotated C-type slot, provides band-stop filters for WiMAX (Worldwide inter-operability for Microwave Access) and WLAN (wireless local area network)-interfering bands. The key parameters of diversity performance are compared by simulation and measurement (fabricated prototype) of ECC (envelope correlation coefficient), DG (directive gain), TARC (total active reflection coefficient) and CCL (channel capacity loss). The antenna offers an omnidirectional radiation pattern with an average gain of 3.52 dBi.

scholarly journals Compact and Broadband Microstrip Antennas for Next Generation High-Speed Wireless Communication Using HIPERLAN/2

2007 ◽  
Vol 2007 ◽  
pp. 1-4 ◽  
Author(s):  
Jibendu Sekhar Roy ◽  
Milind Thomas
Keyword(s):  
Wireless Communication ◽  
High Speed ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Microstrip Antennas ◽  
Area Network ◽  
Next Generation ◽  
Rectangular Slot ◽  
Measurement Results

The investigations on rectangular-slot-loaded and V-slot-loaded proximity-coupled microstrip antennas are reported. The performances of two antennas are investigated for the application in wireless local area network 2 (HIPERLAN/2) using IE3D software and the computed results are verified by measurement. Results show that the antennas have wide bandwidth and moderate gain and may be used as small, compact antennas for HIPERLAN/2 communication.

High Isolated MIMO Antenna for WLAN Applications

2021 ◽  
Author(s):  
Param Dev ◽  
Surendra Kumar Gupta ◽  
Amit Bage ◽  
Lakhindar Murmu
Keyword(s):  
Correlation Coefficient ◽  
Frequency Band ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Impedance Matching ◽  
Local Area ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Potential Candidate ◽  
Mimo Antenna

This paper presents a compact multiple-inputs multiple-outputs (MIMO) antenna for wireless local area network (WLAN) applications. The proposed four-port MIMO antenna has been incorporated with its four identical elements having dimensions of 10[Formula: see text]mm [Formula: see text] 12[Formula: see text]mm each. The MIMO antenna is designed to operate in the range of 5.17–6.25[Formula: see text]GHz frequency band having impedance bandwidth of 18.91%. The antenna is fabricated on a glass epoxy FR-4 substrate having a thickness of 0.8[Formula: see text]mm for measurement and validation. The measured results show that the antenna has good isolation greater than [Formula: see text]17[Formula: see text]dB to [Formula: see text]25[Formula: see text]dB, better impedance matching and envelope correlation coefficient (ECC) below 0.03 over the entire band of operation. The proposed MIMO antenna is a potential candidate for WLAN applications.

DESIGN OF LINEAR AND CIRCULAR POLARIZED ANTENNA FOR WLAN APPLICATION

2016 ◽  
Vol 78 (6-5) ◽  
Author(s):  
Hamizan Abu Bakar ◽  
Mohamad Zoinol Abidin Abd. Aziz ◽  
Badrul Hisham Ahmad ◽  
Azahari Salleh ◽  
Suhana Ghani ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Axial Ratio ◽  
Local Area ◽  
Area Network ◽  
Rectangular Slot ◽  
Rectangular Patch ◽  
Left Handed ◽  
Circular Notch

In this paper, a linear and circular polarized antenna with operating frequency at 2.4 GHz for Wireless Local Area Network (WLAN) application is proposed. Firstly, a basic linear polarization antenna (Design A) was designed with rectangular slot at the rectangular patch and air gap between substrate and copper layer with distance of 10 mm. Next, in order to perform circular polarized, the antenna designed is added with optimized dual circular notch at the rectangular slot. This circular polarized antenna is designed with two different polarization types which are right-handed circular polarization (RHCP) with optimized dual circular notch at the patch (Design B) and left-handed circular polarization (LHCP) with optimized dual circular notch at the patch (Design C). The proposed antenna had been designed and simulated by using Computer Simulation Technology (CST) Microwave Studio Suite. The comparison result of simulation and measurement show that the proposed antenna can achieve axial ratio above 3 dB for linear polarized and below 3 dB for circular polarized with return loss less than -10 dB.

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.

Design of dual band-notched lamp-shaped antenna with UWB characteristics

2015 ◽  
Vol 9 (2) ◽  
pp. 395-402 ◽  
Author(s):  
Swati Yadav ◽  
Anil Kumar Gautam ◽  
Binod Kumar Kanaujia
Keyword(s):  
Electromagnetic Interference ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Dual Band ◽  
Electrical Performance ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Impedance Mismatch ◽  
Rectangular Slot

To restrict electromagnetic interference at WiMAX (3.3–3.7 GHz) and wireless local area network (WLAN) (5.15–5.825 GHz) bands operating within ultra wide bandwidth (UWB) band, a novel design of lamp-shaped UWB microstrip antenna with dual band-notched characteristics is presented. The proposed antenna is composed of a lamp-shaped radiating patch with two rectangular ground planes on both the sides of the radiator with the gap of 0.57 mm. To improve impedance mismatch at middle frequencies, two triangular strips one at each of the ground plane are added; whereas a rectangular slot is etched in the radiating patch to remove impedance mismatch at higher frequencies of the UWB band. Furthermore, an L-shaped slot in the radiator and two L-shaped slots in the ground plane are used to restrict electromagnetic interference (EMI) at WiMAX and WLAN bands, respectively, without affecting the electrical performance of the UWB antenna. Effects of the key parameters on the frequency range of the notched bands are also investigated. The proposed design shows a measured impedance bandwidth of 12.5 GHz (2.7–14.4 GHz), with the two band-notched bands of 3.0–3.9 and 4.9–5.8 GHz. The antenna is suitable to be integrated within the portable UWB devices without EMI interference at WiMAX and WLAN bands.

scholarly journals A Rectangular Ring, Open-Ended Monopole Antenna with Two Symmetric Strips for WLAN and WiMAX Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Joong-Han Yoon ◽  
Young-Chul Rhee ◽  
Woo-Su Kim
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Monopole Antenna ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Bandwidth Requirement ◽  
Ring Open ◽  
Peak Gain ◽  
Triple Band

A triple-band rectangular ring, open-ended monopole antenna with symmetricLstrips for wireless local area network (WLAN)/Worldwide Interoperability of Microwave Access (WiMAX) applications is proposed. The proposed antenna consists of two symmetric folded arms andLstrips. Based on the concept, a prototype of the proposed triple antenna has been designed, fabricated, and tested. The numerical and experimental results demonstrated that the proposed antenna satisfied the −10 dB impedance bandwidth requirement while simultaneously covering the WLAN and WiMAX bands. Furthermore, this paper presented and discussed the 2D radiation patterns and 3D gains according to the results of the experiment. The proposed antenna’s peak gain varied between 2.17 and 4.93 dBi, and its average gain varied between −2.97 and −0.53 dBi.

Broadband MIMO antenna for HiperLAN/2, WLAN, and WiMAX applications with high isolation

2015 ◽  
Vol 8 (2) ◽  
pp. 309-317 ◽  
Author(s):  
Raefat Jalila El Bakouchi ◽  
Marc Brunet ◽  
Tchanguiz Razban ◽  
Abdelilah Ghammaz
Keyword(s):  
High Performance ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Local Area ◽  
Area Network ◽  
Mimo Antenna ◽  
High Isolation ◽  
Large Bandwidth ◽  
S Parameters

This paper presents a multiple-input and multiple-output dual-element planar inverted-F antenna (PIFA) array for broadband operation covering the HIgh PERformance radio Local Area Network/2 (5.2 GHz/5.6 GHz), Wireless Local Area Network (5.2 GHz/5.8 GHz), and the Worldwide Interoperability for Microwave Access (5.5 GHz) bands for the compact wireless communication devices. The antenna dimension is reduced substantially with a miniature ground plane. The PIFA array provides a large bandwidth (670 MHz) and a high isolation between its ports less than −26 dB. The proposed antenna has been analyzed and designed with Ansoft HFSS v.11. Then a prototype was fabricated and tested for its performance in terms of bandwidth, S-parameters, and radiation pattern. A parametric study is made to analyze the effect of different PIFA parameters on the operating frequency and the S-parameters. The diversity performances are evaluated using computer simulation technology microwave studio (CSTMWS). The broadband performance and the high isolation are achieved in both simulation and measurement.

scholarly journals Highest Cost First-Based QoS Mapping Scheme for Fiber Wireless Architecture

Photonics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 114
Author(s):  
Khalid.H. Mohammadani ◽  
Rizwan Aslam Butt ◽  
Kamran Ali Memon ◽  
Fayaz Hassan ◽  
Abdul Majeed ◽  
...  
Keyword(s):  
High Speed ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Optical Network ◽  
Access Network ◽  
Local Area ◽  
Passive Optical Network ◽  
Area Network ◽  
Broadband Wireless ◽  
Dynamic Bandwidth Assignment

The combination of a high-speed wireless network with passive optical network technologies has led to the evolution of a modern integrated fiber wireless (FiWi) access network. Compared to broadband wireless networks, the FiWi network offers higher bandwidth with improved reliability and reduced maintenance costs due to the passive nature of passive optical network (PON). Since the quality of service (QoS) is a baseline to deploy high-speed FiWi broadband access networks, therefore, it is essential to analyze and reduce the typical problems (e.g., bandwidth and delay) in the high-speed next-generation networks (NGANs). This study investigates the performance of a fiber wireless architecture where a 10-Gigabit-capable passive optical network (XGPON) and fifth generation of wireless local area network (WLAN) (i.e., IEEE 802.11ac) are integrated. Both technologies take benefits from each other and have pros and cons concerning the QoS demands of subscribers. The proposed work offers a very flexible QoS scheme for the different types of services of 5G WLAN and XGPON with the help of the highest cost first (HCF) algorithm, which leads to reduced upstream delays for delay-sensitive applications. The simulation results show that the HCF algorithm boosts the performance of the dynamic bandwidth assignment (DBA) scheme and results in up to 96.1%, 90.8%, and 55.5% reduced upstream (US) delays for video: VI(T2), background: BK(T3), and best effort: BE(T4) traffic in enhanced-distributed-channel-access (EDCA) mode. Compared to earlier work, the HCF and immediate allocation with the colorless grant (IACG) DBA combination results in the reduction of up to 54.8% and 53.4% mean US delays. This happens because of 50% to 65% better bandwidth assignment by the IACG DBA process due to efficient mapping by the HCF algorithm.

Super wideband printed monopole antenna for ultra wideband applications

2015 ◽  
Vol 9 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Sandeep Kumar Palaniswamy ◽  
Malathi Kanagasabai ◽  
Shrivastav Arun Kumar ◽  
M. Gulam Nabi Alsath ◽  
Sangeetha Velan ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Wide Band ◽  
Local Area ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Compact Size

This paper presents the design, testing, and analysis of a clover structured monopole antenna for super wideband applications. The proposed antenna has a wide impedance bandwidth (−10 dB bandwidth) from 1.9 GHz to frequency over 30 GHz. The clover shaped antenna with a compact size of 50 mm × 45 mm is designed and fabricated on an FR4 substrate with a thickness of 1.6 mm. Parametric study has been performed by varying the parameters of the clover to obtain an optimum wide band characteristics. Furthermore, the prototype introduces a method of achieving super wide bandwidth by deploying fusion of elliptical patch geometries (clover shaped) with a semi elliptical ground plane, loaded with a V-cut at the ground. The proposed antenna has a 14 dB bandwidth from 5.9 to 13.1 GHz, which is suitable for ultra wideband (UWB) outdoor propagation. The prototype is experimentally validated for frequencies within and greater than UWB. Transfer function, impulse response, and group delay has been plotted in order to address the time domain characteristics of the proposed antenna with fidelity factor values. The possible applications cover wireless local area network, C-band, Ku-band, K-band operations, Worldwide Interoperability for Microwave Access, and Wireless USB.

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