Miniaturized Dual-Band Slot Antenna with Self-Scalable Pattern for Array Applications

Askarian, Amirhossein; Wu, Ke

doi:10.1109/ieeeconf35879.2020.9329855

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…are implemented on materials with high relative permittivity (e.g., Si, SiGe, and InP), a highly power-efficient aperture-shared antenna array should also be implemented on materials with high permittivity [20], [21]. In this case, new sets of space and power-efficient techniques for controlling surface waves, reducing mutual couplings [90], eliminating scan blindness, and edge diffractions, and improving the antenna array radiation pattern, gain, and impedance bandwidths (e.g., using magnetic materials [91] etc.) need to be further investigated.…”

Section: Integrationmentioning

confidence: 99%

Aperture-Shared Radiation Surface: A Promising Technique for Multifunctional Antenna Array Development

Askarian,

2023

Electromag. Sci.

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In the development of a multifunctional and multi-standard analog frontend module in emerging and future wireless systems, multifunction antenna array is an indispensable component. To this end, the aperture-shared technique has come of age, and demonstrated significant advantages in the cost-effective design of efficient, compact, multiband, multibeam, and polarization-diversified antenna arrays, particularly with high frequency ratios. In this paper, various antenna topologies and surface architectures based on this technique, which have been proposed and developed thus far for a wide variety of applications, are reviewed, examined, and categorized to highlight the nature of electromagnetic aperture-shared schemes and merits. Finally, we briefly discuss future research directions in this context for multifunction millimeter-wave and terahertz wireless systems development.

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Section: Integrationmentioning

confidence: 99%

Aperture-Shared Radiation Surface: A Promising Technique for Multifunctional Antenna Array Development

Askarian,

2023

Electromag. Sci.

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Leaky-wave radiating surface on heterogeneous high-κ material for monolithic antenna-frontend integration

Askarian

Yao

Lü

et al. 2023

Journal of Applied Physics

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In a highly integrated analog radio-over-fiber transceiver, seamless integration of the antenna-frontend is crucial as an antenna is generally implemented on a high-κ material, which is set to highly degrade the antenna's performance. This work is concerned with the radiation behavior improvement of a planar leaky-wave antenna with an inductive partially reflecting surface (PRS) on a high-κ substrate for the development of a highly directive antenna. To begin with, we show how a thin and single-mode resonance (SMR) inductive PRS on high-κ materials in a planar leaky-wave antenna is set to provoke two resonance frequencies (i.e., PRS and cavity resonances) to converge, thereby diminishing the antenna's broadside directivity. By applying an equivalent circuit model, we explain how a multi-mode resonance (MMR) PRS can adequately be applied to address the underlying challenges. Subsequently, the leaky-wave radiation behavior of an antenna with a heterogeneous substrate is investigated and analytical equations are derived and verified with a full-wave simulation. The effects of material permittivity and thickness in a heterogeneous-cavity antenna on leaky-wave performance are investigated using these approximate yet accurate-enough equations. To justify the findings, two 9 × 9 planar leaky-wave antennas are prototyped on heterogeneous substrates based on SMR and MMR PRS and the radiation performances are compared. Our investigations reveal that in the proposed scenario, an MMR PRS can significantly enhance the antenna's broadside directivity by over 4 dBi at the resonance frequency (27.5 GHz), which is also set to improve radiation pattern compared to a SMR-based antenna. Finally, a single-fed dual-band aperture-shared antenna with a large frequency ratio (S-band and Ka-band) is developed and fabricated on a high-κ substrate based on the proposed MMR PRS.

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Frequency-Diversified Space-Efficient Radiating Surface Using Convolved Electric and Magnetic Currents for Highly Dense Multiband Antenna-Frontend Integration

Askarian,

Burasa,

2024

Electromag. Sci.

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Miniaturized Dual-Band Slot Antenna with Self-Scalable Pattern for Array Applications

Cited by 3 publications

References 7 publications

Aperture-Shared Radiation Surface: A Promising Technique for Multifunctional Antenna Array Development

Aperture-Shared Radiation Surface: A Promising Technique for Multifunctional Antenna Array Development

Leaky-wave radiating surface on heterogeneous high-κ material for monolithic antenna-frontend integration

Frequency-Diversified Space-Efficient Radiating Surface Using Convolved Electric and Magnetic Currents for Highly Dense Multiband Antenna-Frontend Integration

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