Two-Dimensional Beam-Steering Phased-Array Antenna With Compact Tunable Phase Shifter Based on BST Thick Films

Nikfalazar, Mohammad; Sazegar, Mohsen; Mehmood, Arshad; Wiens, Alex; Friederich, A.; Maune, Holger; Binder, Joachim R.; Jakoby, Rolf

doi:10.1109/lawp.2016.2591078

Cited by 40 publications

(17 citation statements)

References 7 publications

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“…Our platform could, in principle, be exploited for phase-shifting as a potential functionality, but under the assumption that the device is specifically designed for that purpose. For example, Phased array antenna for beam steering application 33,34 where the phased array is used to tailor a specific electric field across an aperture. As the antennas are equally spaced apart, the direction of the collective signal of the individual antenna can be controlled without mechanically moving them.…”

Section: Resultsmentioning

confidence: 99%

Microwave signal switching on a silicon photonic chip

Fang

Lin

Alouini

et al. 2019

Sci Rep

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Microwave photonics uses light to carry and process microwave signals over a photonic link. However, light can instead be used as a stimulus to microwave devices that directly control microwave signals. Such optically controlled amplitude and phase-shift switches are investigated for use in reconfigurable microwave systems, but they suffer from large footprint, high optical power level required for switching, lack of scalability and complex integration requirements, restricting their implementation in practical microwave systems. Here, we report Monolithic Optically Reconfigurable Integrated Microwave Switches (MORIMSs) built on a CMOS compatible silicon photonic chip that addresses all of the stringent requirements. Our scalable micrometer-scale switches provide higher switching efficiency and require optical power orders of magnitude lower than the state-of-the-art. Also, it opens a new research direction on silicon photonic platforms integrating microwave circuitry. This work has important implications in reconfigurable microwave and millimeter wave devices for future communication networks.

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Section: Resultsmentioning

confidence: 99%

Microwave signal switching on a silicon photonic chip

Fang

Lin

Alouini

et al. 2019

Sci Rep

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“…As shown in [10], the use of functional materials like the barium-strontium-titanate (BST) allows to achieve higher operation frequencies than planar designs based on varactors like [4], [5]. However, since these designs are based on an experimental technology the achieved scanning range is lower than the one provided by other planar alternatives, while the power losses are relatively high (being indeed the highest of all the presented works).…”

Section: Relevant Figures Of Merit For the Reconfigurable Phasedmentioning

confidence: 98%

Mechanically Reconfigurable Linear Phased Array Antenna Based on Single-Block Waveguide Reflective Phase Shifters With Tuning Screws

et al. 2020

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This work presents the design and prototyping of a reconfigurable phased array in Ku band (16 to 18 GHz) implemented in waveguide technology. The design is based on the use of a novel seamless waveguide module integrating four reconfigurable phase shifters to adjust the relative phase shift between the unitary elements of a linear array, which are illuminated uniformly by a corporate waveguide feeding network. The phase shifters are implemented by a 90 ○ hybrid coupler in waveguide technology where two of its ports are loaded with a tunable reactive load, implemented in this proof of concept with a tuning screw. The four phase shifters have been manufactured in a single part using direct metal laser sintering, avoiding the losses related to bad electric contacts and misalignments associated to multipart devices. This also simplifies the assembly of the full phased array, leading to a modular approach with three parts whose design can be addressed separately. The experimental results for the complete array antenna show great performance and demonstrate that the main-lobe of the radiation pattern can be effectively scanned continuously between the angles −25 ○ and 25 ○ , with a high efficiency in the whole design band thanks to the proposed waveguide implementation.

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“…Similarly, transmit arrays as a beamforming network are another example of a dual-beam solution grounded on the behavior of frequency selective surfaces and transmitting/receiving elements [9,10]. In the same vein, phased arrays are a cornerstone for dual/multi-beam beamforming and beam steering in infrastructure applications [11], sometimes combined with reflectarray apertures [12] or even feeding the array with a peripherally excited (PEX) metallic cavity [4]. Some other typical applications use classical lossless matrices or hybrids using related circuitry as beamforming networks [13,14].…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Coherent Dual-Beam Array Feed Network for Aperiodic Concentric Ring Antennas

et al. 2021

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A dual-beam coherent feeding system design approach with a non-uniform layout on a concentric ring array is described and synthesized. In this case, the feeding system is based on a reconfigurable topology composed of a set of alternated power dividers and combiners, providing coherent in-phase outputs. Thus, in this paper, a two-beam architecture based on a coherent feeding system formed by a set of intercalated input signals feeding each circular ring in a non-uniform antenna array with multi-beam shaping and steering features is analyzed. The task of optimizing the aperiodic layout on the shared aperture based on the radii of the circular rings is realized by the differential evolution method. Numerical experiments grounded in antenna synthesis validate the capabilities and improved performance of the proposed dual-beam configuration with a non-uniform layout in contrast with its uniform counterpart, with enhanced performance on average by up to −6.1 dB for sidelobe level and 3.5 dB for directivity. Additionally, the results show a significantly less complex two-beam feeding network in contrast with the case of a typical electronically scanned array—in this proposal, each direction of maximum radiation is conformed and scanned with approximately half of the control inputs.

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Two-Dimensional Beam-Steering Phased-Array Antenna With Compact Tunable Phase Shifter Based on BST Thick Films

Cited by 40 publications

References 7 publications

Microwave signal switching on a silicon photonic chip

Microwave signal switching on a silicon photonic chip

Mechanically Reconfigurable Linear Phased Array Antenna Based on Single-Block Waveguide Reflective Phase Shifters With Tuning Screws

Optimization of a Coherent Dual-Beam Array Feed Network for Aperiodic Concentric Ring Antennas

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