Bandwidth and Isolation Improvement of Highly Coupled Printed Array Antenna Using Multiple Shorting Posts

Zaker, Reza; Kheirdoost, Ali

doi:10.1109/tap.2021.3076662

Cited by 26 publications

(4 citation statements)

References 23 publications

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“…Among them, the high isolation brought by the decoupling method proposed in [1], [9], [11], [17] is slightly inferior to 27.5 dB in this paper. In [3], [5], [10], [14]- [16], perfect isolation and high radiation efficiency are obtained. However, the multi-layer structure up to four layers, additional power division network and traditional planar decoupling form on the one hand increase the difficulty of antenna design and processing cost on the one hand.…”

Section: Measured Results Discussion and Comparisonmentioning

confidence: 99%

“…Different from [15], two groups of parallel shorting vias are inserted into the nonradiating edges of two patches to balance the mutual capacitive and inductive couplings. Then the feature of high isolation within broadband is obtained in [16]. In [17], a linear antenna array is proposed by placing the patch antenna and the monopole antenna at intervals.…”

Section: Introductionmentioning

confidence: 99%

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A Miniaturized Two-Element Antenna Array With High Isolation by Using Hybrid Electromagnetic Decoupling

Yang,

Zhou

2023

IEEE Access

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A novel decoupling method combining magnetic coupling and electric coupling is proposed in this paper to design a miniaturized two-element antenna array. Different from the traditional planar decoupling structure, a three-dimensional quasi-split resonant ring decoupling structure which can realize electric coupling is introduced. The quasi-split resonant ring is composed of two meandered antenna elements printed on the top and bottom of the substrate. The other decoupling structure is composed of two parasitic patches, which realize magnetic coupling with the open end of the dipole element in the opposite plane. By properly controlling the strength of magnetic coupling and electric coupling, the induced currents can cancel each other out, thereby enhancing the isolation between adjacent ports. Compared with the antenna array employing the planar decoupling method, the size of the antenna array in this paper is significantly reduced by half. In terms of S-parameter and near-field radiation, the simulated results of the full-wave analysis are compared with the measured results. Essentially identical results successfully verify that the antenna achieves an isolation up to 27.5 dB and omnidirectional radiation mode in the resonant bandwidth of 1.76-1.80 GHz.INDEX TERMS antenna array, magnetic coupling, electric coupling, decoupling structure, parasitic patch, near-field.

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Section: Measured Results Discussion and Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Miniaturized Two-Element Antenna Array With High Isolation by Using Hybrid Electromagnetic Decoupling

Yang,

Zhou

2023

IEEE Access

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“…A traditional microstrip antenna shows a narrow impedance bandwidth due to its single-resonance working mechanism. Etching slots [ 1 ] and loading short circuit pins or holes [ 2 , 3 ] are used to improve its performance. However, it shows low-level improvements in performance.…”

Section: Introductionmentioning

confidence: 99%

Low-Profile Millimeter-Wave Metasurface-Based Antenna with Enhanced Bandwidth

Han

Yan

et al. 2023

Micromachines

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A millimeter-wave broadband metasurface-based antenna with a low profile is proposed. In order to guide the mode excitation, the characteristic mode analysis (CMA) is used for the design and optimization of the proposed antenna. Four sets of coplanar patches with different dimensions on a thin printed circuit board are used to generate four adjacent broadside modes, which are directly fed by a coaxial probe. Then, to expand low-frequency bandwidth, a new resonant mode is introduced by etching slots on the parasite patch. Meanwhile, the extra mode introduced does not significantly change the radiation performance of the original modes. Moreover, dual slots are etched on the mid patch fed by the coaxial probe, which moves the orthogonal modes of the chosen modes out of the operating band to reduce cross-polarization levels. The proposed antenna realized 25.02 % (30–38.58 GHz) impedance bandwidth with dimensions of 1.423×1.423×0.029λ0 3 (λ0 is the wavelength at 34 GHz in free space), and the realized gain in the band is 8.35–11.3 dB.

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“…The integrated design of the feeding networks in a multilayered PCB allows for array antenna configurations. Co-linearly polarized microstrip antennas have been studied for full-duplex systems [18]- [21]. This antenna can be used for simultaneous transmission and receiver systems that require high isolation between the transmitter and receiver.…”

Section: Introductionmentioning

confidence: 99%

D-Band 4 × 4 Multi-Feed Array Antenna-in-Package for High-Power Combining and Polarization Synthesis

Kim,

Jung,

Lee

et al. 2023

IEEE Access

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A 4 × 4 multi-feed array antenna-in-package (AiP) is presented for high-power combinations and various polarization syntheses, which operates at D-band. The multi-feed antenna element was designed considering N-number (K × K) of array antennas from the beginning. Hence, the proposed antenna can provide four input ports while achieving impedance bandwidth of 27%, port-to-port isolation higher than 10 dB, and cross-polarization discrimination (XPD) over 20 dB. In addition, the power combination and polarization synthesis can be achieved using various excitation states. A 4 × 4 antenna array from simulated results achieves a gain of up to 18.2 dBi, radiation efficiency of 81%, and XPD of over 20 dB. For verification purposes, the proposed antennas were designed with power dividers for different polarization states. An −10 dB impedance bandwidth of over 27% and a coverage of over ±60°were measured from the experiment.INDEX TERMS D-band, multi-feed, multilayer printed PCB, antenna array.

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Bandwidth and Isolation Improvement of Highly Coupled Printed Array Antenna Using Multiple Shorting Posts

Cited by 26 publications

References 23 publications

A Miniaturized Two-Element Antenna Array With High Isolation by Using Hybrid Electromagnetic Decoupling

A Miniaturized Two-Element Antenna Array With High Isolation by Using Hybrid Electromagnetic Decoupling

Low-Profile Millimeter-Wave Metasurface-Based Antenna with Enhanced Bandwidth

D-Band 4 × 4 Multi-Feed Array Antenna-in-Package for High-Power Combining and Polarization Synthesis

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