Wideband Dipole Array Loaded Substrate Integrated H-Plane Horn Antenna for Millimeter Waves

Non-ionizing millimeter-waves (MMW) interact with cells in a variety of ways. Here the inhibited cell division effect was investigated using 85–105 GHz MMW irradiation within the International Commission on Non-Ionizing Radiation Protection (ICNIRP) non-thermal 20 mW/cm2 safety standards. Irradiation using a power density of about 1.0 mW/cm2 SAR over 5–6 h on 50 cells/μL samples of Saccharomyces cerevisiae model organism resulted in 62% growth rate reduction compared to the control (sham). The effect was specific for 85–105 GHz range and was energy- and cell density-dependent. Irradiation of wild type and Δrad52 (DNA damage repair gene) deleted cells presented no differences of colony growth profiles indicating non-thermal MMW treatment does not cause permanent genetic alterations. Dose versus response relations studied using a standard horn antenna (~1.0 mW/cm2) and compared to that of a compact waveguide (17.17 mW/cm2) for increased power delivery resulted in complete termination of cell division via non-thermal processes supported by temperature rise measurements. We have shown that non-thermal MMW radiation has potential for future use in treatment of yeast related diseases and other targeted biomedical outcomes.

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Continuously Frequency-Tunable Horn Filtennas Based on Dual-Post Resonators

International Journal of Antennas and Propagation ◽

10.1155/2019/6529343 ◽

2019 ◽

Vol 2019 ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Andreia A. C. Alves ◽

Luis G. da Silva ◽

Evandro C. Vilas Boas ◽

Danilo H. Spadoti ◽

S. Arismar Cerqueira

Keyword(s):

Millimeter Waves ◽

Indoor Environment ◽

Horn Antenna ◽

Tunable Filter ◽

Mean Square ◽

Error Vector Magnitude ◽

Tuning Ratio ◽

Frequency Tunable ◽

24 Ghz ◽

Vector Magnitude

This work reports the concept and development of two mechanically frequency-tunable horn filtennas for microwave and millimeter-waves. Our design approach relies on the integration of a horn antenna with a mechanically tunable filter based on dual-post resonators. The proposed filtennas have been manufactured and experimentally characterized, by means of reflection coefficient, radiation pattern, and gain. Measurements demonstrate that both filtennas have a tuning ratio of approximately 1.37 with continuous adjustment. The first prototype operates from 2.56 to 3.50 GHz, whereas in the second one the bandwidth is from 17.4 to 24.0 GHz. In addition, the higher-frequency filtenna has been implemented in a 5.0-meter-reach indoor environment, using a 16-QAM signal at 24 GHz. The best configuration in terms of performance resulted in a root mean square error vector magnitude (EVMRMS) and antenna radiation efficiency of 3.69% and 97.0%, respectively.

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Non-Thermal Millimeter Waves Non-Ionizing Radiation of Saccharomyces Cerevisiae – Insights and Interactions

10.20944/preprints202011.0032.v2 ◽

2021 ◽

Author(s):

Ayan Barbara ◽

Shailendra Rajput ◽

Konstantin Komoshvili ◽

Jacob Levitan ◽

Asher Yahalom ◽

...

Keyword(s):

Saccharomyces Cerevisiae ◽

Cell Division ◽

Ionizing Radiation ◽

Millimeter Waves ◽

Model Organism ◽

Horn Antenna ◽

Colony Growth ◽

Genetic Alterations ◽

Repair Gene ◽

Safety Standards

Nonionizing millimeter-waves (MMW) interact with cells in a variety of ways. Here the inhibited cell division effect was investigated using 85-105 GHz MMW irradiation within the ICNIRP (International Commission on Non-Ionizing Radiation Protection) non-thermal 20 mW/cm2 safety standards. We irradiated using radiation with a power density of about 1.0 mW/cm2 over 5-6 hours on 50 cells/μl samples of Saccharomyces cerevisiae model organism. This resulted in 62% growth rate reduction compared to the control (sham). The effect was specific for 85-105 GHz range, and was energy and cell density dependent. Irradiation of wild type and Δrad52 (DNA damage repair gene) deleted cells presented no differences of colony growth profiles indicating non-thermal MMW treatment does not cause permanent genetic alterations. Dose versus response relations studied using a standard horn antenna (~1.0 mW/cm2) and compared to that of a compact waveguide (17.17 mW/cm2) for increased power delivery resulted in complete termination of cell division via non-thermal processes supported by temperature rise measurements. Combinations of MMW mediated Structure Resonant Energy Transfer (SRET), membrane modulations eliciting signaling effects, and energetic resonance with biomolecules are conjectured to be responsible for the observations reported. Our results suggest innovative applications of nonionizing radiation procedures for yeast related diseases and other targeted biomedical outcomes.

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Non-Ionizing Millimeter Waves Non-thermal Radiation of Saccharomyces Cerevisiae – Insights and Interactions.

10.20944/preprints202011.0032.v3 ◽

2021 ◽

Author(s):

Ayan Barbora ◽

Sailendra Rajput ◽

Konstantin Komoshvili ◽

Jacob Levitan ◽

Asher Yahalom ◽

...

Keyword(s):

Saccharomyces Cerevisiae ◽

Cell Division ◽

Millimeter Waves ◽

Model Organism ◽

Horn Antenna ◽

Colony Growth ◽

Genetic Alterations ◽

Power Delivery ◽

Repair Gene ◽

Safety Standards

Nonionizing millimeter-waves (MMW) interact with cells in a variety of ways. Here the inhibited cell division effect was investigated using 85-105 GHz MMW irradiation within the ICNIRP (International Commission on Non-Ionizing Radiation Protection) non-thermal 20 mW/cm2 safety standards. Irradiation using a power density of about 1.0 mW/cm2 , SAR over 5-6 hours on 50 cells/μl samples of Saccharomyces cerevisiae model organism resulted in 62% growth rate reduction compared to the control (sham). The effect was specific for 85-105 GHz range, and was energy and cell density dependent. Irradiation of wild type and Δrad52 (DNA damage repair gene) deleted cells presented no differences of colony growth profiles indicating non-thermal MMW treatment does not cause permanent genetic alterations. Dose versus response relations studied using a standard horn antenna (~1.0 mW/cm2) and compared to that of a compact waveguide (17.17 mW/cm2) for increased power delivery resulted in complete termination of cell division via non-thermal processes supported by temperature rise measurements. We have shown that non-thermal MMW radiation has potential for future use in treatment of yeast related diseases and other targeted biomedical outcomes.

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Non-thermal Millimeter Waves Non-Ionizing Radiation of Saccharomyces Cerevisiae – Insights and Interactions.

10.20944/preprints202011.0032.v1 ◽

2020 ◽

Author(s):

Ayan Barbara ◽

Shailendra Rajput ◽

Konstantin Komoshvili ◽

Jacob Levitan ◽

Asher Yahalom ◽

...

Keyword(s):

Saccharomyces Cerevisiae ◽

Cell Division ◽

Ionizing Radiation ◽

Millimeter Waves ◽

Model Organism ◽

Horn Antenna ◽

Colony Growth ◽

Genetic Alterations ◽

Repair Gene ◽

Safety Standards

Nonionizing millimeter-waves (MMW) interact with cells in a variety of ways. Here the inhibited cell division effect was investigated using 85-105 GHz MMW irradiation within the ICNIRP (International Commission on Non-Ionizing Radiation Protection) non-thermal 20 mW/cm2 safety standards. We irradiated using radiation with a power density of about 1.0 mW/cm2 over 5-6 hours on 50 cells/μl samples of Saccharomyces cerevisiae model organism. This resulted in 62% growth rate reduction compared to the control (sham). The effect was specific for 85-105 GHz range, and was energy and cell density dependent. Irradiation of wild type and Δrad52 (DNA damage repair gene) deleted cells presented no differences of colony growth profiles indicating non-thermal MMW treatment does not cause permanent genetic alterations. Dose versus response relations studied using a standard horn antenna (~1.0 mW/cm2) and compared to that of a compact waveguide (17.17 mW/cm2) for increased power delivery resulted in complete termination of cell division via non-thermal processes supported by temperature rise measurements. Combinations of MMW mediated Structure Resonant Energy Transfer (SRET), membrane modulations eliciting signaling effects, and energetic resonance with biomolecules are conjectured to be responsible for the observations reported. Our results suggest innovative applications of nonionizing radiation procedures for yeast related diseases and other targeted biomedical outcomes.

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SIGW dual level H-plane horn antenna for millimeter waves

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting ◽

10.1109/apusncursinrsm.2017.8073375 ◽

2017 ◽

Author(s):

Nima Bayat-Makou ◽

Ahmed A. Kishk

Keyword(s):

Millimeter Waves ◽

Horn Antenna

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The method of determining the metrological performance of unit reference standards of reflection coefficient in waveguides at millimeter waves

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2020-1-59-63 ◽

2020 ◽

pp. 59-63

Author(s):

A.S. Bondarenko ◽

A.S. Borovkov ◽

I.M. Malay ◽

V.A. Semyonov

Keyword(s):

Reflection Coefficient ◽

Millimeter Waves ◽

Primary Standard ◽

Reference Standards ◽

Measurement Scale ◽

Current State ◽

Coefficient Measurement ◽

Mathematical Equations ◽

Electrodynamic Modeling ◽

Metrological Performance

The analysis of the current state of the reflection coefficient measurements in waveguides at millimeter waves is carried out. An approach for solving the problem of reproducing the reflection coefficient measurement scale is proposed. Mathematical equations, which are the basis of the reflection coefficient measurement equation are obtained. The method of determining the metrological performance of reflection coefficient unit’s reference standards is developed. The results of electrodynamic modeling and analytical calculations by the developed method are compared. It is shown that this method can be used for reproducing the reflection coefficient unit in the development of the State primary standard.

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