Small-sized body influence on the quality factor increasing of quasioptical open resonator

Dorofeev, I. O.; Dunaevskii, G. E.; Suslyaev, V. I.; Minin, Igor V.

doi:10.1007/s11082-017-1201-6

Cited by 7 publications

(10 citation statements)

References 17 publications

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“…The dielectric loss values of the ferroelectric ceramic samples with size 48 × 60 × 1 mm 3 were measured via the OR at frequency ∼60 GHz. Note that the sizes of measured samples were significantly more than operating wavelength; this allows to avoid the small-sized body influence on the quality factor of the OR described in [30]. In accordance with the described measure technique, the loss tangent value of the ferroelectric ceramic plate was about 0.015-0.02 at 60 GHz.…”

Section: Methodsmentioning

confidence: 67%

A Tunable Beamforming Ferroelectric Lens for Millimeter Wavelength Ranges

2020

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agaltynnikov@etu.ru (A.A.); abkozyrev@etu.ru (A.K.) * Correspondence: raplatonov@etu.ru; Tel.: +7-812-234-4809 † These authors contributed equally to this work. Abstract:The advanced design of a millimeter-wave quasi-optical beamforming device (QOBD) based on the ferroelectric ceramic was elaborated and considered. Among the advantages of the proposed design are simplicity and cost-effectiveness in contrast to conventional analog and digital beamforming devices based on array antennas. The use of ferroelectric ceramic in the QOBD design allows operating in a wide frequency range up to 100 GHz. The advanced topology of discrete radiotransparent electrodes to provide a realization of different beamforming functions such as beam focusing and beam scanning was considered. The prototype of the proposed QOBD was designed to operate at 60 GHz. The measured radiation pattern of the QOBD prototype is in good agreement with the simulated one. Measurements demonstrate decreasing of beamwidth of the primary antenna radiation pattern by the lens prototype operating in the beam focusing regime.

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Section: Methodsmentioning

confidence: 67%

A Tunable Beamforming Ferroelectric Lens for Millimeter Wavelength Ranges

2020

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“…A detailed description of the equipment and method used was presented in [18]. Note that dimensions of the measured ceramic plates were 48 × 60 × 1 mm 3 , which were significantly larger than the operating wavelength; this allowed avoiding the small-sized body's influence on the quality factor of the OR described in [19].…”

Section: Methodsmentioning

confidence: 99%

Millimeter-Wave Reflector Based on a Ferroelectric Material with Electrical Beam Steering

et al. 2021

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Millimeter waves are increasingly used in modern telecommunication systems for wireless data transmission. However, higher path loss, especially caused by non-line-of-sight scenarios, remains challenging. The design of an electrically controllable reflector for the millimeter-wave range is elaborated and presented in this manuscript. The reflector design was based on distributed ferroelectric ceramic elements and could be used in a frequency range up to 100 GHz. The issue of the ferroelectric reflector impedance matching was analyzed in detail. Two possible implementations of the reflector for indoor and outdoor communication systems were considered and simulated. The prototype of the proposed reflector for an operating frequency of 60 GHz was manufactured. Both simulation and measurement results demonstrated the beam steering by the proposed ferroelectric reflector.

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“…The interesting terajet applications include the gain in sensitivity of terahertz detectors by localized downward radiation in a subwavelength volume [60][61][62], gain in sensitivity of open microwave resonators [63], the use of terajet generating mesoscale particles as a dielectric small-sized antenna in promising terahertz communication systems, including 5G-6G [64,65], and others.…”

Section: Terajetsmentioning

confidence: 99%

Optical Phenomena in Mesoscale Dielectric Particles

Minin

2021

Photonics

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During the last decade, new unusual physical phenomena have been discovered in studying the optics of dielectric mesoscale particles of an arbitrary three-dimensional shape with the Mie size parameter near 10 (q~10). The paper provides a brief overview of these phenomena from optics to terahertz, plasmonic and acoustic ranges. The different particle configurations (isolated, regular or Janus) are discussed, and the possible applications of such mesoscale structures are briefly reviewed herein in relation to the field enhancement, nanoparticle manipulation and super-resolution imaging. The number of interesting applications indicates the appearance of a new promising scientific direction in optics, terahertz and acoustic ranges, and plasmonics. This paper presents the authors’ approach to these problems.

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Small-sized body influence on the quality factor increasing of quasioptical open resonator

Cited by 7 publications

References 17 publications

A Tunable Beamforming Ferroelectric Lens for Millimeter Wavelength Ranges

A Tunable Beamforming Ferroelectric Lens for Millimeter Wavelength Ranges

Millimeter-Wave Reflector Based on a Ferroelectric Material with Electrical Beam Steering

Optical Phenomena in Mesoscale Dielectric Particles

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