A Three-Port Polarization and Pattern Diversity Ring Antenna

Saurav, Kushmanda; Mallat, Nazih Khaddaj; Antar, Yahia M. M.

doi:10.1109/lawp.2018.2844170

Cited by 67 publications

(47 citation statements)

References 11 publications

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“…16 Figure 3A shows the current distribution of the circular patch when Port 1 is excited with or without a shorted wall. As a result of the shorting point connection between one edge of the patch and the cavity wall, the current distribution on the patch is different from the distributions of the TM 11 and TM 01 modes of the circular patch. As shown in the left side of Figure 3A, the current on the patch is divided into two parts along the dashed line AA'.…”

Section: Antenna Configurationmentioning

confidence: 99%

“…The dimensions of the proposed antenna are optimized using ANSYS HFSS 15.0 software and the corresponding parameters are given in Table 1. 11 or TM 01 modes of a typical circular patch antenna, broadside or conical radiation patterns can be generated, respectively. 18 In addition, the two radiation patterns above can also be obtained by using the odd or even types of the TM 11 modes.…”

Section: Antenna Configurationmentioning

confidence: 99%

“…Two Vivaldi antennas with pattern diversity have been applied in the cellular band . The combination of polarization and pattern diversity enables operation in multiple modes and is often applied in multiple‐input multiple‐output (MIMO) systems …”

Section: Introductionmentioning

confidence: 99%

“…8 The combination of polarization and pattern diversity enables operation in multiple modes and is often applied in multiple-input multiple-output (MIMO) systems. [9][10][11] To date, in antenna design for pattern diversity, the combination of broadside and conical patterns has been widely studied and reported. [12][13][14][15][16][17][18] In References 13-18, only a single patch is used to excite the two modes, that is, both the broadside and conical patterns.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A novel dual‐mode patch antenna with pattern diversity and beam‐tilting for aircraft applications

Yan

Jiao

Zhang

2020

Int J RF Microw Comput Aided Eng

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A dual‐mode patch antenna with pattern diversity that is beam‐tilted in a specific direction is presented. By placing a rectangular metal cavity below the circular patch and simultaneously shorting one end of the patch, the antenna produces tilted beams for dual‐mode radiation patterns. One pattern is excited using a proximity‐fed L‐shaped probe that generates a beam with a tilt angle of 25° from the broadside direction. The second pattern is excited using a coplanar waveguide (CPW)‐based feeding network that generates two beams with a tilt angle of θmax = ±45° in the directions of ϕmax = 70° and − 70°. The tilt angle can be varied by adjusting the metal cavity's length. A prototype antenna for operation at 2.38 GHz was fabricated and measured. The results indicate that the overlapped bandwidth (|S11| < −10 dB) for the two patterns is 330 MHz (2.22‐2.55 GHz). The measured peak gains for the two patterns are 6.74‐6.94 dBi and 5.82‐6.74 dBi, respectively. The isolation between the two ports is 18 dB.

show abstract

Section: Antenna Configurationmentioning

confidence: 99%

Section: Antenna Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel dual‐mode patch antenna with pattern diversity and beam‐tilting for aircraft applications

Yan

Jiao

Zhang

2020

Int J RF Microw Comput Aided Eng

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“…Equal gains are required for a multiport system to maintain a reasonable link budget for the required angular coverage [4]. Researchers in [5] proposed a three-port ring antenna with mutual coupling less than 20 dB where the exciting ports create omnidirectional and broadside radiation pattern for a pattern diversity antenna. The antenna provides only a 45 • coverage on the boresight, and the omnidirectional pattern provides a low gain of 2.85 dBi.…”

Section: Introductionmentioning

confidence: 99%

Gain Equalized Three Antenna Pattern Diversity Module for Wlan Access Points

Swapna¹,

Karthikeya²,

Koul³

et al. 2019

PIER C

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This paper demonstrates a three-port coaxial fed antenna system for wireless local area network (WLAN) access points, consisting of two dipoles and a patch, radiating at 5.2 GHz with impedance bandwidth of 150 MHz. The antennas are designed for pattern diversity in the end-fire and broadside orientation with an individual gain of 4.5 dBi, which is further enhanced to 6 dBi after integrating with unit-cell structures. The gain enhancement for individual antennas is achieved by strategically integrating transmission type and reflective type sub-wavelength structures for patch and dipoles, respectively. The realized ground plane is shared among the three antennas. The measured results show that the return loss of the antennas is unaffected by the unit-cell loading and has an isolation of less than 26 dB throughout the band and across the ports for a port-to-port distance of 0.25λ.

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Hybrid metasurface loaded tri‐port compact antenna with gain enhancement and pattern diversity

Mohanty

Behera

Nasimuddin

2021

Int J RF Microw Comput Aided Eng

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A tri‐port compact antenna loaded on hybrid metasurface (MS) with gain enhancement and pattern diversity is proposed in this article. The antenna consists of three analytically designed contorted radiators (Ant‐1, Ant‐2, and Ant‐3). A koch‐fed fractal aperture ground plane is used to improve impedance matching and port isolation, thus eliminating supplementary decoupling networks. Ant‐1 is 45° tilted, operating in wideband mode. Ant‐2 is one‐fourth, Ant‐3 is one‐half in electrical lengths with L‐shaped metallic contortions to achieve good matching characteristics and asserts pattern diversity. A hybrid MS (combination of conventional customized MS's) structure is loaded for gain enhancement of ≈ 8.93 dBi. Ant‐1 operates at (4.97‐10.63) GHz with 72.56% frequency bandwidth (FBW), Ant‐2 operates at (8.5‐10.4) GHz with 20.1% (FBW) and Ant‐3 operates at (7.2‐9.6) GHz with 28.57% (FBW). The differentiation in antenna electrical size assists compactness, reduction in mutual coupling (>17 dB), has uncorrelated radiation patterns at each port delivering far‐field diversity with low ECC < 0.1. A prototype antenna of size 28.6 mm × 28.6 mm is fabricated and experimented, which are in good agreements with EM simulation and equivalent circuit model response. The proposed tri‐port antenna can be a promising candidate for MIMO diversity applications.

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A Three-Port Polarization and Pattern Diversity Ring Antenna

Cited by 67 publications

References 11 publications

A novel dual‐mode patch antenna with pattern diversity and beam‐tilting for aircraft applications

A novel dual‐mode patch antenna with pattern diversity and beam‐tilting for aircraft applications

Gain Equalized Three Antenna Pattern Diversity Module for Wlan Access Points

Hybrid metasurface loaded tri‐port compact antenna with gain enhancement and pattern diversity

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