scholarly journals Stacked T-Shaped Strips Compact Antenna for WLAN and WiMAX Applications

2021 ◽  
Author(s):  
M. Karthikeyan ◽  
R. Sitharthan ◽  
Tanweer Ali ◽  
Sameena Pathan ◽  
Jaume Anguera ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Design Analysis ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Compact Antenna ◽  
Novel Structure ◽  
Triple Band

AbstractA compact triple band antenna with stacked T-shaped strips inside a rectangular ring monopole has been proposed. This novel structure with a slot in the defected ground achieves triple band opration i.e. 2.47–2.77 GHz, 3.3–3.7 GHz and 5.10–6.62 GHz. These bands find application in important wireless communication standards like WiMAX (3.3–3.8 GHz, and 5.25–5.85 GHz, WLAN (2.4 G-2.5 GHz, 5.1–5.3 GHz, and 5.72–5.85 GHz). The antenna is printed on a FR-4 substrate with an overall dimension of $$33 \times 17 \times 1.6 \;{\text{mm}}^{3}$$ 33 × 17 × 1.6 mm 3 . An impedance bandwidth of 11% (2.47–2.77 GHz), 11% (3.3–3.7 GHz) and 25% (5.10–6.62 GHz) is obtained. A good conjunction between the simulated and measured results is inferred from the antenna design analysis.

Design of a novel triple-band monopole antenna for WLAN/WiMAX MIMO applications in the laptop computer

Circuit World ◽  
2019 ◽  
Vol 45 (4) ◽  
pp. 257-267 ◽  
Author(s):  
Jayshri Sharad Kulkarni ◽  
Raju Seenivasan
Keyword(s):  
Antenna Array ◽  
Cost Effective ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Laptop Computer ◽  
Content Type ◽  
Laptop Computers ◽  
Triple Band

Purpose This paper aims to present a triple-band monopole antenna design of 0.2-mm thickness with an overall dimension of 21 × 8 mm2 for wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) multiple input and multiple output (MIMO) applications in the laptop computer. Design/methodology/approach It comprises three monopole radiating elements, namely, strip AD (inverted C), strip EG (inverted J) and strip FI (inverted U) along with two rectangular open-end tuning stubs, namely, “m” and “n” of size 1.5 × 0.9 mm2 and 1.8 × 0.9 mm2, respectively. The proposed structure is compact, cost-effective and easy to integrate inside the laptop computers. Findings This structure excites three WLAN (2.4/5.2/5.8 GHz) and three WiMAX (2.3/3.3/5.5 GHz) bands. The proposed antenna array elucidates that it has measured −10dB impedance bandwidth of 11.86 per cent (2.22-2.50) GHz in a lower band (f_l), 6.83 per cent (3.25-3.48) GHz in medium band (f_m) and 16.84 per cent (5.00-5.92) GHz in upper band (f_u). The measured gain and radiation efficiency are above 3.64dBi and 75 per cent, respectively, and isolation better than −20dB. The envelope correlation coefficient (ECC) is less than 0.004. The simulated and measured results are in good concurrence, which confirms the applicability of the proposed antenna array for MIMO applications in the laptop computer. Originality/value The proposed antenna is designed without using vias, reactive elements and matching circuits for excitation of WLAN/WiMAX bands in the laptop computers. The design also does not require any additional ground for mounting the antenna. Further, the antenna array, formed by using the same antenna design, does not need additional isolating elements and is designed in such a way that the system ground itself acts as an isolating element. The proposed antenna has a low profile and is ultra-thin, cost-effective and easy to manufacture and can be easily embedded inside the next-generation laptop computers.

scholarly journals A Triple-band Suspended Microstrip Antenna with Symmetrical USlots for WLAN/WiMax Applications

2018 ◽  
Vol 7 (2) ◽  
pp. 41-47 ◽  
Author(s):  
S. B. Behera ◽  
D. Barad ◽  
S. Behera
Keyword(s):  
Microstrip Antenna ◽  
Communication Systems ◽  
Ground Plane ◽  
Dielectric Substrate ◽  
Wireless Communication Systems ◽  
Impedance Bandwidth ◽  
Compact Antenna ◽  
Impedance Characteristics ◽  
Triple Band ◽  
Feeding Techniques

In this study, a triple-band suspended microstrip antenna with symmetrical U-slots is proposed for modern wireless communication systems. The antenna is specifically designed to acquire application in WLAN and WiMAX communication. Symmetrical U-slots in the radiator patch increase the number of resonances and improve the gain response. An appropriate air height was maintained between the ground plane and the radiator patch layer for improving bandwidth operation. The impedance characteristics of the antenna are enhanced using probe feeding techniques. The proposed compact antenna is designed on a single dielectric substrate of (30×25×1.56) mm3 . Parametric analysis of the proposed structure has been realized using IE3D software. This prototype exhibits maximum impedance bandwidth of 750 MHz and gain response of 7.28 dBi. The performance of the structure at three resonating bands i.e., at 3.3 GHz, 3.78 GHz and 5.3 GHz facilitate it to be applicable for WLAN/WiMAX systems.

Quasi-self-complementary ultra-wideband antenna with band rejection characteristics

2018 ◽  
Vol 10 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Rajarshi Sanyal ◽  
Partha Pratim Sarkar ◽  
Santosh Kumar Chowdhury
Keyword(s):  
Impedance Matching ◽  
Ground Plane ◽  
Equivalent Circuit Model ◽  
Ultra Wideband ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Novel Structure ◽  
Quarter Wavelength ◽  
Matching Element ◽  
Rejection Band

This article presents a compact novel quasi-self-complementary semi-octagonal-shaped antenna for ultra-wideband (UWB) application. The proposed novel structure is fed by a microstrip line where different rectangular truncation is etched to the ground plane as an impedance matching element, which results for much wider impedance bandwidth (VSWR<2) from 2.9 to 20 GHz. In order to obtain band-notched characteristics at 5.5 GHz, an open-ended, quarter wavelength, spiral-shaped stub is introduced in the vicinity of the truncated part of the ground plane. An equivalent circuit model is adopted to investigate the band rejection characteristics of the ground plane stub. Sharpness of the rejection band can be controlled by maintaining the gap between stub resonator and the slotted periphery of ground plane. The proposed antenna design is validated by experimental measurements.

scholarly journals Design of a Novel Triple Band Monopole Antenna for WLAN/WiMAX MIMO Applications in the Laptop Computer

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Jayshri Kulkarni ◽  
Raju Seenivasan ◽  
V. Abhaikumar ◽  
Deepak Ram Prasath Subburaj
Keyword(s):  
Antenna Array ◽  
Correlation Coefficient ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Laptop Computer ◽  
Multiple Input ◽  
Medium Band ◽  
Better Than ◽  
Triple Band

This paper presents a triple band monopole antenna design with an overall size of 21  ×  8  mm2 for WLAN/WiMAX Multiple Input and Multiple Output (MIMO) applications in the laptop computer. It comprises of three monopole radiating elements, along with two rectangular open-ended tuning stubs. This structure excites 2.4/5.2/5.8 GHz WLAN and 2.3/3.3/5.5 GHz WiMAX bands. The prototype testing of proposed antenna array formed by using the same antenna design shows that, it has measured -10dB impedance bandwidth of 11.86% (2.22-2.50 GHz) in a lower band (fl), 5% (3.25-3.42 GHz) in medium band (fm) and 16.84% (5.00-5.92 GHz) in upper band (fu). The measured gain and radiation efficiency are well above 3.65 dBi and 75%, respectively, throughout the operating bands. Also, the measured isolation between two antennas is better than -20dB and envelope correlation coefficient (ECC) is less than 0.004 across the three bands of interest. This confirms the applicability of the proposed antenna array for MIMO applications in the laptop computer.

scholarly journals A Compact Antenna Design for Fifth Generation Wireless Communication System

2017 ◽  
Vol 140 ◽  
pp. 01009 ◽  
Author(s):  
N. N. Daud ◽  
M. N. Osman ◽  
M.R. Kamarudin ◽  
A.R. Kram ◽  
M.M. Azizan
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Antenna Design ◽  
Compact Antenna ◽  
Wireless Communication System ◽  
Fifth Generation

Compact dual and triple band antennas for 5G-IOT applications

2021 ◽  
pp. 1-8
Author(s):  
Ruchi ◽  
Amalendu Patnaik ◽  
M. V. Kartikeyan
Keyword(s):  
Microwave Frequency ◽  
Mobile Internet ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Printed Antenna ◽  
Iot Applications ◽  
Multiband Antennas ◽  
New Radio ◽  
Compact Size ◽  
Triple Band

Abstract Designing miniaturized multiband antennas to cover both the 5G new radio frequencies (FR1 and FR2) simultaneously is a challenge for wireless communication researchers. This paper presents two antenna designs : a dual-band printed antenna of size 18 × 16 × 0.285 mm3 operating at FR1–5.8 GHz and FR2–28 GHz and a triple-band printed antenna with dimensions 30 × 25 × 0.543 mm3 operating at FR1–3.5 GHz and 5.8 GHz (sub-6 GHz microwave frequency bands) and FR2–28 GHz (mm-wave frequency band). The final projected triple-band antenna has a compact size with an impedance bandwidth of 12.71%, 11.32%, and 18.3% at 3.5 GHz, 5.8 GHz, and 28 GHz, respectively with the corresponding gain of 1.86 dB, 2.55 dB, and 4.41 dB. The measured radiation characteristics of the fabricated prototypes show that the proposed designs are suitable for trendy 5G-RFID and mobile Internet of things (IoT) applications.

scholarly journals A Novel SWB Antenna with Triple Band-Notches Based on Elliptical Slot and Rectangular Split Ring Resonators

Electronics ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 202 ◽  
Author(s):  
Xiaobo Zhang ◽  
Saeed Ur Rahman ◽  
Qunsheng Cao ◽  
Ignacio Gil ◽  
Muhammad Irshad khan
Keyword(s):  
Split Ring Resonator ◽  
Ring Resonators ◽  
Impedance Bandwidth ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Compact Size ◽  
Good Agreement ◽  
Swb Applications ◽  
Triple Band ◽  
Microstrip Feed

In this paper, a wideband antenna was designed for super-wideband (SWB) applications. The proposed antenna was fed with a rectangular tapered microstrip feed line, which operated over a SWB frequency range (1.42 GHz to 50 GHz). The antenna was implemented at a compact size with electrical dimensions of 0.16 λ × 0.27 λ × 0.0047 λ mm3, where λ was with respect to the lowest resonance frequency. The proposed antenna prototype was fabricated on a F4B substrate, which had a permittivity of 2.65 and 1 mm thickness. The SWB antenna exhibited an impedance bandwidth of 189% and a bandwidth ratio of 35.2:1. Additionally, the proposed antenna design exhibited three band notch characteristics that were necessary to eradicate interference from WLAN, WiMAX, and X bands in the SWB range. One notch was achieved by etching an elliptical split ring resonator (ESRR) in the radiator and the other two notches were achieved by placing rectangular split ring resonators close to the signal line. The first notch was tuned by incorporating a varactor diode into the ESRR. The prototype was experimentally validated with, with notch and without notch characteristics for SWB applications. The experimental results showed good agreement with simulated results.

Triple-Band Dipole Antenna for Wireless Communication Systems

2021 ◽  
Author(s):  
Sergey Berdnik ◽  
Victor Katrich ◽  
Mikhail Nesterenko ◽  
Oleksandr Dumin
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Dipole Antenna ◽  
Wireless Communication Systems ◽  
Triple Band

Comb Shaped Triple Band Microstrip Antenna for Wireless Communication

2021 ◽  
Vol 9 (4) ◽  
pp. 379-382
Keyword(s):  
Dielectric Constant ◽  
Wireless Communication ◽  
High Frequency ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Experimental Results ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Triple Band

A comb shaped microstrip antenna is designed by loading rectangular slots on the patch of the antenna. The antenna resonating at three different frequencies f1 = 5.35 GHz, f2 = 6.19 GHz and f3= 8.15 GHz. The designed antenna is simulated on High Frequency Structure Simulator software [HFSS] and the antenna is fabricated using substrate glass epoxy with dielectric constant 4.4 having dimension of 8x4x0.16 cms. The antenna shows good return loss, bandwidth and VSWR. Experimental results are observed using Vector Analyzer MS2037C/2.

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