CPW‐fed compact slot antenna for WLAN operation in a laptop computer

Naser‐Moghadasi, Mohammad; Fakhr, Reza Sadeghi; Danideh, A.

doi:10.1002/mop.25198

Cited by 11 publications

(10 citation statements)

References 6 publications

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“…Obviously, the achieved bandwidths can cover the WLAN standards in the 2.45 GHz (2.4-2.484 GHz) and 5.2 GHz (5. 15-5.35 GHz) bands and they are increased as compared as the structure without multiple layer dielectric substrates [17].…”

Section: Mutual Couplingmentioning

confidence: 98%

“…The geometry and parameters of the antenna with double T-shaped stub are shown in Fig Thus, we have kept the values of W, Ws, Wf and g as compared as the structure described in [17] whereas the other parameters are been modified without also the necessity of a ground plane. Furthermore, in [17], the antenna is etched on Rogers RO4003 substrate with a thickness of 0.5 mm but for our approach, we need to use two different substrates with a thickness of 1.5 mm for each.…”

Section: Antenna Structurementioning

confidence: 99%

“…Furthermore, in [17], the antenna is etched on Rogers RO4003 substrate with a thickness of 0.5 mm but for our approach, we need to use two different substrates with a thickness of 1.5 mm for each. In this case, we have obtained an impedance bandwidth of 28.57 and 6.15 % at 2.45 and 5.2 GHz respectively as compared as the case in [17] in which the achieved impedance bandwidth was 25.5 and 5.7 % . Although, the structure seems complex and a bit expensive, it offers the best performance in terms of bandwidth and helps us to design a 2 × 2 MIMO system in a simpler way.…”

Section: Antenna Structurementioning

confidence: 99%

“…In this paper, we propose to use the structure developed in [17] with some changes in its design. We have also used multiple layer dielectric substrates to get more broadband characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Coplanar waveguide (CPW) -fed antennas for wireless communications have been discussed by many authors for dual-band operations thanks, essentially, to a smaller mutual coupling between adjacent lines and easier integration capability with solid-state active devices, compared with other printed radiating elements [16]. A novel CPW-fed slot antenna with simple structure and compact size to cover the 2.4/5.2 GHz WLAN bands is investigated in [17].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Requirements Analysis of Dual Band MIMO Antenna

Aouadi

Tahar

2014

Wireless Pers Commun

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A compact CPWfed double T-shaped antenna with multiple layer dielectric substrates is proposed for dual-band Wireless Local Area Network (WLAN) operations. For the proposed antenna, the −10 dB return loss bandwidth could reach about 28.57 % for the 2.45 GHz band and 6.15 % for the 5.2 GHz band which meet the required bandwidth specification of WLAN standard. To get high isolation and improve the performances of the Multiple-Input-Multiple-Output (MIMO) systems, we suggested using the novel Left Handed Metamaterial with multiple bands called M-band Nested U-Ring Resonator after fractional removal of substrate. An evaluation of MIMO antennas is presented, with analysis of the mutual coupling, correlation coefficient, diversity gain and correlation efficiency. As per results, the proposed solution meets the requirements for practical WLAN applications.

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Section: Mutual Couplingmentioning

confidence: 98%

Section: Antenna Structurementioning

confidence: 99%

Section: Antenna Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Requirements Analysis of Dual Band MIMO Antenna

Aouadi

Tahar

2014

Wireless Pers Commun

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Dual‐polarized MIMO antenna system for WiFi and LTE wireless access point applications

Moradikordalivand

Rahman

Leow

et al. 2014

Int J Communication

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In this paper, a dual-polarized multiple-input multiple-output (MIMO) antenna system suitable for indoor wireless access point is proposed. The presented MIMO antenna system consists of two coplanarwaveguide-fed monopole antennas with orthogonally polarized modes. According to the closely spaced structure of the MIMO antenna system, the mutual coupling between the ports is a big challenge. Therefore, a new structure of parasitic element is introduced in order to improve the mutual coupling between the ports. For the purpose of validating the simulated results, the antenna prototype has been fabricated and measured; the comparison of the results shows that there is an acceptable agreement between the measurement and simulation results. The proposed design covers the frequency bands of WiFi (2.4 GHz), Worldwide Interoperability for Microwave Access (2.3 and 2.5 GHz), and Long-Term Evolution (LTE; 1.5 and 2.6 GHz) applications with a reflection coefficient less than À10 dB and a mutual coupling coefficient better than À15 dB. The MIMO antenna system provides an envelope correlation coefficient less than 0.15, polarization diversity gain more than 9.985 dB, and quasi-omnidirectional pattern within the expected frequency band. In addition, LTE downlink throughput measurements show that the proposed antenna system delivers data rates close to the theoretical maximum for quadrature phase shift keying, 16 quadrature amplitude modulation (QAM), and 64-QAM modulations. coefficients (S 12 and S 21 ) without CSPE are above À9 dB, indicating low isolation between the ports. The coupling coefficients (S 12 and S 21 ) with CSPE are À17 dB, justifying that good isolation between ports has been achieved. S-parameter resultsIn order to validate the simulated results obtained from CST Microwave Studio, the prototype has been fabricated and measured. The performance of the fabricated antenna is tested using a vector network analyzer to determine the reflection coefficient, isolation, voltage standing wave ratio, and bandwidth of the proposed antennas as well their operating frequency. Figure 4. Parametric study on the gap between ring number 3 and stepped line.Figure 5. Simulated S-parameter of the proposed MIMO antenna (a) without CSPE and (b) with CSPE. 5 of 11 DUAL-POLARIZED MIMO ANTENNA SYSTEM

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A novel elliptic microstrip FED antenna with double band notched characteristic for UWB application

Rad

Qotolo

Naser‐Moghadasi

et al. 2012

Micro & Optical Tech Letters

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A compact ultrawideband microstrip‐fed monopole antenna with two band notch property is presented.The antenna consists of a truncated elliptic patch with half wave arc slot and two parasitic bent elements in both side of the radiating patch. It is designed with half elliptic ground plane in the back of the radiating patch. The antenna provides an enhanced impedance matching characteristic over the desired frequency band, with variable dimensions which are used to generate the frequency band stop performance in wireless local area network and the worldwide interoperability for microwave access frequency bands. The antenna is designed and measured successfully. The measured results show that this antenna operates over the frequency band between 2.2 and 11.5 GHz for S11 < 10 dB, while showing the band rejection performances in the frequencies band of 3.2–3.8 GHz and 5.2–5.8 GHz. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2659–2662, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27130

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CPW‐fed compact slot antenna for WLAN operation in a laptop computer

Cited by 11 publications

References 6 publications

Requirements Analysis of Dual Band MIMO Antenna

Requirements Analysis of Dual Band MIMO Antenna

Dual‐polarized MIMO antenna system for WiFi and LTE wireless access point applications

A novel elliptic microstrip FED antenna with double band notched characteristic for UWB application

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