An extremely compact pattern diversity antenna for WLAN

Thudor, F.; Louzir, Ali

doi:10.1109/aps.2002.1016926

Cited by 13 publications

(9 citation statements)

References 3 publications

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“…However, large volume that antennas in such diversity systems occupy remains a critical problem in implementing small wireless platforms. Previous efforts mainly concentrated on reducing the size of individual antennas for such applications [7], [8]. However, compact colocated diversity antennas have not been well studied.…”

Section: Introductionmentioning

confidence: 99%

Compact, Low Profile, Common Aperture Polarization, and Pattern Diversity Antennas

Sarabandi

2014

IEEE Trans. Antennas Propagat.

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This paper presents compact and low profile two-port antennas that can provide polarization or pattern diversity schemes from a common aperture. The proposed antennas make use of a novel small microstrip antenna topology with an open area at its waist. The two sections of the small-size microstrip antenna are connected through a magnetic coupling mechanism facilitated by two vertical metallic strips connecting the top plates to the ground plane. This allows for placement of another small antenna element within the same aperture having either polarization or pattern that is orthogonal to the microstrip antenna with low envelope correlation. Topologies of polarization and pattern-diversity antennas are optimized for size reduction and minimum envelope correlation. Although the proposed diversity antenna consists of two antenna elements with different polarizations or radiation patterns, they just occupy about 30% of the area of a conventional microstrip antenna over the same substrate. It is shown that the envelope correlation between radiation patterns of the two antenna elements is lower than dB over the 10-dB return loss bandwidth of the proposed antenna.Index Terms-Antennas diversity, microstrip antennas, multiple-input-multiple-output (MIMO) systems.

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Section: Introductionmentioning

confidence: 99%

Compact, Low Profile, Common Aperture Polarization, and Pattern Diversity Antennas

Sarabandi

2014

IEEE Trans. Antennas Propagat.

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“…These methods reduce the mutual coupling effectively but occupy extra space. In [6], a pattern diversity antenna consisting of a monopole and an annular slot antenna is presented. Due to the complementary radiation patterns of the two different antenna elements, low mutual coupling can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Pattern and Polarization Diversity Antenna With High Isolation for Portable Wireless Devices

Wang

Feng

Luk

2009

Antennas Wirel. Propag. Lett.

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A compact two-element antenna with both pattern and polarization diversities and high isolation for 2.4 GHz WLAN application is reported. The antenna is composed of a low-profile monopole and a pair of inverted-L antennas fed by 180 out-of-phase excitations. A prototype is fabricated and the measured S-parameters and radiation patterns are presented. The measured isolation is better than 29 dB across the required bandwidth. The envelope correlation coefficient, the mean effective gains and the diversity gain are calculated to evaluate the diversity potential of the proposed antenna.

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“…Thus characteristics like flexibility, efficiency and simple fabrication made the patch antennas very attractive for wireless communications [4]. WLAN's are replacing short distance wired communication links [5,6] although at designing stage compatibility is the main issue among various access points. Because of a user demands single portable device capable of working at different technologies for applications [7], which eventually becomes a reason to develop multi-standard end-user devices [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Analytical Evaluation of Tri-band Printed Antenna

Saleem¹,

Nawazm²,

Ahmed³

et al. 2012

Inf. Sci. Lett.

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Simulated design and analysis of a simple tri-band microstrip antenna is presented in this paper. A thin transmission line is used to excite the rectangular patch and FR4 epoxy with relative permittivity of 4.4 is used as substrate. To confirm the proficiency of proposed antenna, simulations have been performed in Ansoft HFSS (High Frequency Structure Simulator) a 3D electromagnetic field simulator, based on finite element method. Impedance bandwidths are determined on -10 dB at resonating frequencies of 2.4, 3.3 and 5.3 GHz. An introduced design covers the requisite bandwidth for IEEE Wireless Local Area Network (WLAN) standards: 802.11 a/n, b/g (Wi-Fi), Bluetooth, ZigBee, and 802.16e (WiMAX). Multiband functionality, small size, light weightiness, plain configuration and conformability are the advantages; making the proposed design a good contender for integration in handheld wireless devices.

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An extremely compact pattern diversity antenna for WLAN

Cited by 13 publications

References 3 publications

Compact, Low Profile, Common Aperture Polarization, and Pattern Diversity Antennas

Compact, Low Profile, Common Aperture Polarization, and Pattern Diversity Antennas

Pattern and Polarization Diversity Antenna With High Isolation for Portable Wireless Devices

Analytical Evaluation of Tri-band Printed Antenna

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