Multiband and Wideband Antennas for Mobile Communication Systems

Seçmen, Mustafa

doi:10.5772/25921

Cited by 12 publications

(6 citation statements)

References 36 publications

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“…4 has also shown that it is possible to achieve efficiency greater than 50%. The antenna efficiency was computed as follows: (1) where and are the measured gain in decibels and reflection coefficient, respectively; while the directivity ( ) was computed using the radiation intensity. There is good agreement …”

Section: B Experimental Results Of Wideband Smp Antennamentioning

confidence: 99%

See 1 more Smart Citation

New Adjustable Slot Meander Patch Antenna for 4G Handheld Devices

Elamin

Rahman

Abdulrahman

2013

Antennas Wirel. Propag. Lett.

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Two different antennas constructed using a new concept, the slot meander patch (SMP) design, are presented in this study. SMP antennas are designed for fourth-generation long-term evolution (4G LTE) handheld devices. These antennas are used for different target specifications: LTE-Time Division Duplex and LTE-Frequency Division Duplex (LTE TDD and LTE FDD). The first antenna is designed to operate in a wideband of 1.68-3.88 GHz to cover eight LTE TDD application frequency bands. Investigations have shown that the antenna designed with unequal meander widths has a higher efficiency compared to its equivalent antenna design with equal meander widths. The second antenna was configured as a multiband SMP antenna, which operates at three distinct frequency bands (0.5-0.75, 1.1-2.7, and 3.3-3.9 GHz), to cover eight LTE FDD application bands including the lowest and the highest bands. There is a good agreement between the measurement and simulation results for both antennas. Moreover, parametric studies have been carried out to investigate the flexible multiband antenna. Results have shown that the bandwidths can be improved through adjusting the meander widths without changing the SMP length and all other parameters. Index Terms-LTE antenna, LTE-FDD frequency bands, LTE-TDD frequency bands, slot meander patch.

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Section: B Experimental Results Of Wideband Smp Antennamentioning

confidence: 99%

“…T HE SOLUTION to the next-generation user equipment antennas is either a wideband or multiband antenna design [1]. Two possible designs are presented in this letter using the slot meander patch (SMP) antenna design.…”

Section: Introductionmentioning

confidence: 99%

New Adjustable Slot Meander Patch Antenna for 4G Handheld Devices

Elamin

Rahman

Abdulrahman

2013

Antennas Wirel. Propag. Lett.

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“…After the parametric study employed in Section 2.1 and the substantial conclusions acquired from the results, some modifications are done to obtain desired frequency band of 1.71-2.69 GHz. With the idea of usage of thick structures as being one of the methods to increase the bandwidth [19], it is needed parasitic elements with much thicker than W = 6 mm to get about 1 GHz band. However, if the thickness is extended along outward direction, the total width of the dielectric substrate (given as 80 mm in Figure 2) should be increased accordingly.…”

Section: Meandered Line Modification and Final Designmentioning

confidence: 99%

Base Station Antenna with Enhanced Cross Polarization Discrimination Performance by Using Horizontal Meandered Dipole and Vertical Parasitic Elements

Kadagan

Turkmen

Seçmen

2019

AEM

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This study is related with the design of a ± 45° dual polarized base station antenna with improved cross-polarization discrimination (XPD) values. Parasitic elements are added to antenna design formed by orthogonal two compact meandered dipole above ground plane. The antenna designed with CST Microwave Studio program has VSWR ≤ 2 within 1.71-2.69 GHz frequency band, which covers GSM 1800/3G/LTE bands. The antenna has minimum of 0 dBi gain in the beamwidth of 120° ( 60°) at azimuth plane (ϕ = 0°) along the band, and XPD values being minimum of 2 dB at 1.71-2.4 GHz for 60° without parasitic elements are improved to 10 dB with parasitic elements. This design initially had two horizontal straight monopoles on the ground plane perpendicular to each other. Afterwards, antenna with microstrip balun feed applied but the XPD values were not appropriate to expected results. Because of that, by using image theory, vertical parasitic elements were added to get appropriate XPD values. Later, meandered structure used to make antenna smaller. Finally, according to base station applications, antenna frequencies optimized to 1.71 GHz and 2.69 GHz. The designed and optimized antenna produced and measured in laboratory environment. Return losses for port 1 and port 2 are measured above the 10 dB and isolation between the port 1 and port 2 are measured above the 20 dB. In addition, the maximum gain values are measured between 3 dB and 7 dB in 1.71 GHz and 2.69 GHz frequency band. Finally, XPD values are measured more than 10 dB in bandwidth.

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“…With these developments, cellular headphones antennas have been transformed from singleband to multi-band characteristics [6][7]. In [8] a tetra brand planar inverted-F antenna (PIFA) for mobile handset applications is planned and meander line is exploited in reduction the antenna size.…”

Section: Introductionmentioning

confidence: 99%

SAR Calculations of Novel Dual-band PIFA for Mobile Phone Applications

Ali

Ahmed

El-Deeb

et al. 2019

CJAST

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Aims: The objective of this paper is to design a new PIFA for cell phone applications with low SAR. Study Design: The designed PIFA antenna involves a patch with slots on the upper side of first substance layer FR-4, shorting wall, and a ground plane in the bottom side of second substance layer FR-4 and exciting (feeding port). Place and Duration of Study: Department of Electronics and Communication Engineering, Faculty of Engineering, University of Zagazig. Between December 2017 to March 2019. Methodology: it will be utilized SAM head model and a hand phantom as a user’s head and hand. Time-domain solver considers hexahedral mesh with adaptive meshing scheme used in this simulation. Results: The simulation result has been obtained using MWS CST tools which constructed on the finite integration technique. And the measurement results are accomplished with vector analyzer ZVA 67. The simulated and the investigational results are the same approximately. Conclusion: The antenna provides high gain for both frequency bands (900MHZ and 1800MHZ) with approximately 90% radiation efficiency. Moreover, The SAR analysis of the suggested antenna clearly demonstrates little SAR characteristics suitable for human usage competed with the standards of the safe SAR values.

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Multiband and Wideband Antennas for Mobile Communication Systems

Cited by 12 publications

References 36 publications

New Adjustable Slot Meander Patch Antenna for 4G Handheld Devices

New Adjustable Slot Meander Patch Antenna for 4G Handheld Devices

Base Station Antenna with Enhanced Cross Polarization Discrimination Performance by Using Horizontal Meandered Dipole and Vertical Parasitic Elements

SAR Calculations of Novel Dual-band PIFA for Mobile Phone Applications

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