Low-Profile Broadband Antenna With Pattern Diversity

Zheng, Ying; Vandenbosch, Guy A. E.; Yan, Sen

doi:10.1109/lawp.2020.2996196

Cited by 25 publications

(11 citation statements)

References 28 publications

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“…ECC is a parameter to evaluate whether the antenna can be used in MIMO applications. It can be calculated by S parameters [32] or by this formula in far field [33]:…”

Section: A Eccmentioning

confidence: 99%

Design of Smartwatch Integrated Antenna With Polarization Diversity

Wang

Yan

2020

IEEE Access

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A design of smartwatch integrated antenna with polarization diversity is proposed. An annular ring is integrated in the framework of smartwatch, and excited by two ports. One port is fed by a coplanar waveguide (CPW) line loaded with a T-shaped matching network, and the other is fed by a coplanar strip line (CPS). The overall model of the proposed antenna has a cylindrical shape with 38 mm diameter and 7.5 mm thickness. A metallic plate is located at the backside of the antenna to mimic the shell of smartwatch. The prototype is fabricated and measured, and the measured results agree well with the numerical ones. The two ports have orthometric radiation patterns and can cover the 2.4 GHz wireless local area network (WLAN) band. The gain of the antenna is higher than 3.2 dBi in free space. The proposed antenna is also analyzed with a cubic tissue model and a wrist model in different distances between the proposed antenna and human models. The performances on body scenarios are also acceptable. The values of specific absorption rate (SAR) in the cubic tissue model and wrist model are below the limitations set by both the Federal Communication Commission (FCC) and the European Telecommunication Standards Institute (ETSI). Envelope correlation coefficient (ECC) shows proposed antenna can be used in multiple input multiple output (MIMO) applications. The influence of battery and printed circuits board assembly (PCBA) on S parameters is obvious, and gain and radiation efficiency are not much affected. INDEX TERMS Wireless body area network (WBAN), wearable antenna, Smartwatch integrated antenna, polarization diversity, cubic tissue model, wrist model, specific absorption rate (SAR), Envelope correlation coefficient (ECC).

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“…ECC is a parameter to evaluate whether the antenna can be used in MIMO applications. It can be calculated by S parameters [32] or by this formula in far field [33]:…”

Section: A Eccmentioning

confidence: 99%

Design of Smartwatch Integrated Antenna With Polarization Diversity

Wang

Yan

2020

IEEE Access

Self Cite

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“…However certain applications such as indoor communication does not need much higher gain and thus the purpose can be solved with few antenna elements with various patterns. Several methods have been incorporated till date for achieving pattern diversity in antennas [15], [25]- [27]. In general, pattern diversity is achieved by co-locating more antenna elements with different radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

Planar FSS Based Dual-Band Wire Monopole Antenna for Multi-Directional Radiation With Diverse Beamwidths

et al. 2022

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In this paper, two planar Frequency Selective Surfaces (FSS) with dissimilar configurations along with monopole antenna exhibiting dual-band response at 3 GHz and 5.5 GHz is presented. One of the surfaces with two reflectors is reflective at 5.5 GHz and transmissive at 3 GHz, whereas the response is opposite for the FSS in another flat reflector. Accordingly the antenna exhibits directive radiation at both the frequencies, however in two opposite directions. Unit cell of the FSS at 3 GHz is on the order of λ g /11, leading to low-profile design. With different orientations of the reflectors, beamwidths at 3 GHz and 5.5 GHz are different leading to different peak gains of 7.1 dBi and 12.2 dBi respectively. The composite antenna-FSS with a dimension on the order of 1.1λ × 1.1λ × 0.2λ exhibits diverse beam radiation. The radiation at 3 GHz can be used in applications involving wide coverage area, whereas at 5.5 GHz the antenna can be used in applications involving smaller beamwidths such as satellite communication, Ground Penetrating Radar etc.

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“…Emerging wireless technologies necessitate patch antennas with wideband pattern diversity characteristics. To this end, in [7][8][9][10], antennas with wide bandwidth ranges nearing 60% were proposed. However, all these designs consisted of multiple radiating structures, e.g., monopole antennas integrated with the radiating patches in multi-layered structures.…”

Section: Introductionmentioning

confidence: 99%

“…The overall thickness of these antennas was greater than 0.15λ o , where λ o is the free space wavelength at the center frequency of operation. Moreover, in [7], despite its wide shared impedance bandwidth of ∼ 50%, the 3-dB gain bandwidth was only in the order of 33%. By exciting the higher order conical modes in addition to the dominant mode in a single radiating patch, antennas with reconfigurable radiation patterns and wide impedance bandwidth characteristics in the order of 45% were reported in [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Circular Patch Antenna With Pattern Diversity and Reduced Sidelobes

Radavaram¹,

Pour²

2021

PIER M

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A wideband circular patch antenna with broadside and conical radiation patterns is proposed. In addition to realizing a wide shared impedance bandwidth of ∼ 48% for both the modes of operation, the unparalleled advantage of the proposed antenna is its reduced sidelobes in the E-plane broadside radiation patterns. The achieved sidelobe-free bandwidth is in the order of 39%, which is much wider than the pertinent art works on wideband pattern diversity antennas using a single radiating patch. The antenna characteristics are validated by fabricating and testing the designed prototype. The proposed antenna is also numerically investigated in front of a parabolic reflector antenna for monopulse radar applications.

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Low-Profile Broadband Antenna With Pattern Diversity

Cited by 25 publications

References 28 publications

Design of Smartwatch Integrated Antenna With Polarization Diversity

Design of Smartwatch Integrated Antenna With Polarization Diversity

Planar FSS Based Dual-Band Wire Monopole Antenna for Multi-Directional Radiation With Diverse Beamwidths

A Wideband Circular Patch Antenna With Pattern Diversity and Reduced Sidelobes

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