Mm-Wave Beam Steering Antenna With Reduced Hardware Complexity Using Lens Antenna Subarrays

Mumcu, Gökhan; Kacar, Merve; Mendoza, Jonas

doi:10.1109/lawp.2018.2857441

Cited by 36 publications

(30 citation statements)

References 17 publications

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“…Uniform TAs operate with −13 dB SLL. LAS architecture is already shown to provide ≈ −10 dB SLL in recent publications [30], [35]. In addition, antenna gain obtained from LAS architecture is shown to be comparable to that of the TA.…”

Section: ) Radiated Beam Assumptionmentioning

confidence: 69%

“…1. In a particular LAS architecture example, the variables were selected as N = 20 antenna elements, L = 5 lenses, M = N/L = 4, N RF = 1 and radiation performance was investigated [30]. This was a 1D linear array implementation of the LAS architecture.…”

Section: System Model a Lens Antenna Subarray (Las)mentioning

confidence: 99%

“…Typically, TAs operate with scan ranges of ±45 • and can approach to ±60 • with careful design considerations (such as suppression of surface waves). As a new architecture, LAS architecture may have potential to match this scan range in future and has already demonstrated ≈ ±45 • [30], [35]. As stated above, these recent publications realize LAS using extended hemispherical dielectric lenses with antennas located in focal plane.…”

Section: ) Scan Range Assumptionmentioning

confidence: 99%

“…Hence, SLA is expected to underperform in spectrum efficiency in a multipath environment. In this paper, we propose to investigate spectrum and energy efficiency of a recently introduced architecture: lens antenna subarrays (LAS) [30], [31]. LAS architecture is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Lens Antenna Subarrays in mmWave Hybrid MIMO Systems

2020

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Data rate and energy efficiency performance of mmWave wireless communication systems consisting of a new lens antenna subarray (LAS) based hybrid multiple input multiple output (MIMO) architecture is investigated. The LAS architecture degenerates into traditional hybrid MIMO architecture (TA) or single lens antenna array architecture (SLA) when the lens diameter of the subarray is reduced or enlarged, respectively. It is shown that under mmWave channel scattering conditions, LAS architecture operates with a data rate approaching that of TA while significantly exceeding the data rate of the SLA. Due to the reduced hardware complexity and power consumption, LAS architectures operate with a significantly improved energy efficiency. In an example system consisting of 64 and 16 transmitter and receiver antennas with 2 RF chains, it is shown that the LAS architecture operates with 2× energy efficiency and 98% spectrum efficiency. In a larger hybrid MIMO antenna systems, LAS architecture is expected to benefit even more. INDEX TERMS MIMO, beamforming, lens antenna, large antenna array, subarray, mmWave.

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Section: ) Radiated Beam Assumptionmentioning

confidence: 69%

Section: System Model a Lens Antenna Subarray (Las)mentioning

confidence: 99%

Section: ) Scan Range Assumptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lens Antenna Subarrays in mmWave Hybrid MIMO Systems

2020

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“…Other notable techniques being pursued for packaging of PAAs are on-wafer integration [7], heterogeneous integration [8] and additive manufacturing [9], [10]. At the architecture level, subarrays [11]- [13], lens antenna subarrays [14], beam-forming networks [15] and traditional lens antennas [16] are being investigated to reduce the complexity of PAAs.…”

Section: Introductionmentioning

confidence: 99%

A Spatially Adaptive Antenna Array for Mm-Wave Wireless Channel Control With Microfluidics Based Reconfiguration

et al. 2020

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Spatially adaptive antenna array (SAA) is an electronically scanned antenna array with capability of changing its physical location. This new capability allows SAA to control the wireless channel environment to increase link capacity without employing an increased number of antenna elements. Compact and cost-effective implementation of SAA requires a strategically designed RF feed network that can allow the radiating antenna elements to be repositioned while other RF and digital electronics remain stationary. This manuscript introduces a novel RF feed network and demonstrates the first experimental verification of SAA by using microfluidic based reconfiguration. The presented microfluidically reconfigurable SAA (MRSA) exhibits the best possible compact form-a total footprint that is approximately equal to the spatial adaptation range. MRSA operates at 28 GHz with 45 mm (4.2 λ 0) spatial adaptation capability. Evaluating MRSA in communication systems using its measured realized gain patterns show that link level performance of the wireless channel is improved by 24% from 8.5 bps/Hz to 10.5 bps/Hz. Additionally, spectral efficiency is improved by 100% with 5 dB improvement in average signal to interference ratio. INDEX TERMS Beam steering, channel capacity, diversity methods, microfluidics, millimeter wave communication, phased arrays VOLUME x, 20xx

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Review and comparison of different limited scan phased array antenna architectures

Singhal

Hasan

2021

Circuit Theory & Apps

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Phased array antenna or beamformer plays key role in many emerging wireless applications, be it industrial such as 5G wireless communication and RADAR technology or commercial such as autonomous driving, imaging, and so on. Depending upon the application and design constraints such as power, area, and hardware cost, there are many architectures available in the open literature for designing a beamformer. The power consumption and the hardware cost become the two major limiting factors while choosing the specific phased array antenna for commercial applications. In order to reduce the hardware cost, designers try to limit the scanning range of the beamformer by reducing the number of control elements generally the phase shifters. These beamformers are called limited scan phased array antenna (LSPAA). These are proving to be useful in many commercial applications due to their reduced design cost. In this paper, we provide a detailed review of the various architectures present in literature for LSPAA design and a comparison between several of them with respect to scanning range, sidelobe level (SLL), and so on. In addition, a figure-of-merit is also proposed for comparison between the different architectures.

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Mm-Wave Beam Steering Antenna With Reduced Hardware Complexity Using Lens Antenna Subarrays

Cited by 36 publications

References 17 publications

Lens Antenna Subarrays in mmWave Hybrid MIMO Systems

Lens Antenna Subarrays in mmWave Hybrid MIMO Systems

A Spatially Adaptive Antenna Array for Mm-Wave Wireless Channel Control With Microfluidics Based Reconfiguration

Review and comparison of different limited scan phased array antenna architectures

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