Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336472
Anastasios Papathanasopoulos, Y. Rahmat-Samii, R. Bahr, Yepu Cui, M. Tentzeris
This paper presents for the first time the additive manufacturing using inkjet printing processes to construct flat-layered metamaterial lenses. In previous work, the metamaterial patterns on the lens layers were produced using an etching approach on commercially available dielectric copper-clad substrates. In this paper, the meta-lens consists of metamaterial square-rings that are inkjet-printed on ultra-thin dielectric layers of polyethylene terephthalate (PET) using silver nanoparticle ink. The metamaterial square-ring units of variable sizes are distributed on the thin dielectric layers to satisfy the required refractive index distribution. Simulation results of a 12 cm lens operating at 13.4 GHz demonstrate the collimating features of the proposed lens.
{"title":"Introducing Inkjet Printing Technology to the Fabrication of Flat-Layered Meta-Lens Antennas","authors":"Anastasios Papathanasopoulos, Y. Rahmat-Samii, R. Bahr, Yepu Cui, M. Tentzeris","doi":"10.23919/USNC-URSINRSM51531.2021.9336472","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336472","url":null,"abstract":"This paper presents for the first time the additive manufacturing using inkjet printing processes to construct flat-layered metamaterial lenses. In previous work, the metamaterial patterns on the lens layers were produced using an etching approach on commercially available dielectric copper-clad substrates. In this paper, the meta-lens consists of metamaterial square-rings that are inkjet-printed on ultra-thin dielectric layers of polyethylene terephthalate (PET) using silver nanoparticle ink. The metamaterial square-ring units of variable sizes are distributed on the thin dielectric layers to satisfy the required refractive index distribution. Simulation results of a 12 cm lens operating at 13.4 GHz demonstrate the collimating features of the proposed lens.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125904323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336445
A. Aqueeb, V. Gadhamshetty, Sayan Roy
Numerous applications now-a-days require radio frequency devices to be directly positioned in harsh environments, leading to corrosion and ultimately catastrophic failures. Electromagnetically transparent coating materials can be a very good candidate for addressing such an issue. 2-Dimensional hexagonal Boron Nitride is a newer material gaining a significant attention for its structural similarity with graphene and corrosion resistive functionality without being electrically conductive, unlike graphene. This paper investigates the behavior of electromagnetic wave propagation in 2-D hBN material on copper through comparative analysis based on microstrip transmission line design.
{"title":"On the Effect of 2-D Hexagonal Boron Nitride for Radio Frequency Circuits in Harsh Environments","authors":"A. Aqueeb, V. Gadhamshetty, Sayan Roy","doi":"10.23919/USNC-URSINRSM51531.2021.9336445","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336445","url":null,"abstract":"Numerous applications now-a-days require radio frequency devices to be directly positioned in harsh environments, leading to corrosion and ultimately catastrophic failures. Electromagnetically transparent coating materials can be a very good candidate for addressing such an issue. 2-Dimensional hexagonal Boron Nitride is a newer material gaining a significant attention for its structural similarity with graphene and corrosion resistive functionality without being electrically conductive, unlike graphene. This paper investigates the behavior of electromagnetic wave propagation in 2-D hBN material on copper through comparative analysis based on microstrip transmission line design.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116029475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336490
M. Noferesti, T. Djerafi
A curved trapezoid patch antenna to harvest RF power at 2.45 GHz ISM band (2.4 to 2.5 GHz) for wearable on-body sensor networks. The effect of curving around a cylinder with different diameters is investigated. Gain of the proposed antenna bent around a cylinder with 5cm diameter is 6.42 dBi. 3dB beam-width of the antenna is 90 and 80 degree on YOZ and XOZ planes, respectively. Antenna structure is planar one-layer and is excited by microstrip line proper for on-body wearable systems.
{"title":"Curving Effect on The Curved Trapezoid Patch for On-Wrist Power Harvesting at 2.45 GHz","authors":"M. Noferesti, T. Djerafi","doi":"10.23919/USNC-URSINRSM51531.2021.9336490","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336490","url":null,"abstract":"A curved trapezoid patch antenna to harvest RF power at 2.45 GHz ISM band (2.4 to 2.5 GHz) for wearable on-body sensor networks. The effect of curving around a cylinder with different diameters is investigated. Gain of the proposed antenna bent around a cylinder with 5cm diameter is 6.42 dBi. 3dB beam-width of the antenna is 90 and 80 degree on YOZ and XOZ planes, respectively. Antenna structure is planar one-layer and is excited by microstrip line proper for on-body wearable systems.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"912 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114442946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336491
M. Haider, J. Russer
Radiated electromagnetic interference is an ubiquitous problem that needs to be accounted for in the design of electronic devices. Typically, restrictions on the maximum permissible field level for a device to cause over a certain frequency range are imposed, based on characterizing the device's radiations in the far-field. We present a probabilistic approach to characterize and model radiated interference, based on stochastic electromagnetic fields. This allows for computationally predicting the probability for exceeding the emission threshold, set by international electromagnetic compatibility regulations.
{"title":"A Probabilistic Approach to Radiated Electromagnetic Interference","authors":"M. Haider, J. Russer","doi":"10.23919/USNC-URSINRSM51531.2021.9336491","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336491","url":null,"abstract":"Radiated electromagnetic interference is an ubiquitous problem that needs to be accounted for in the design of electronic devices. Typically, restrictions on the maximum permissible field level for a device to cause over a certain frequency range are imposed, based on characterizing the device's radiations in the far-field. We present a probabilistic approach to characterize and model radiated interference, based on stochastic electromagnetic fields. This allows for computationally predicting the probability for exceeding the emission threshold, set by international electromagnetic compatibility regulations.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129683174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336471
Christian Cavalier, B. Jackson
This paper presents a low profile, circularly polarized patch antenna using proximity coupled feeds. A wide bandwidth was achieved by exciting the patch antenna with four proximity coupled feeds from a wideband phase shifting network. The simulated −10 dB |S11| bandwidth was from 1480 MHz to 2730 MHz (58.4%) and the simulated 3 dB axial ratio bandwidth was from 1650 MHz to 2820 MHz (52.4%). The peak gain of the antenna was simulated to be 4.4 dBi at 2000 MHz in the broadside direction. This was achieved while maintaining a very low profile of 0.05λ, where λ is the wavelength corresponding to the lowest operating frequency. The overall antenna dimensions were 75.0 mm × 75.0 mm × 9.2 mm.
本文提出了一种采用接近耦合馈源的低轮廓圆极化贴片天线。利用宽带移相网络的四个近距离耦合馈源激励贴片天线，实现了宽带带宽。−10 dB |S11|带宽范围为1480 ~ 2730 MHz (58.4%)， 3db轴比带宽范围为1650 ~ 2820 MHz(52.4%)。仿真结果表明，天线在2000 MHz宽方向上的峰值增益为4.4 dBi。这是在保持非常低的0.05λ的情况下实现的，其中λ是与最低工作频率对应的波长。天线整体尺寸为75.0 mm × 75.0 mm × 9.2 mm。
{"title":"Wideband Proximity-Fed Low Profile Circularly Polarized Patch Antenna","authors":"Christian Cavalier, B. Jackson","doi":"10.23919/USNC-URSINRSM51531.2021.9336471","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336471","url":null,"abstract":"This paper presents a low profile, circularly polarized patch antenna using proximity coupled feeds. A wide bandwidth was achieved by exciting the patch antenna with four proximity coupled feeds from a wideband phase shifting network. The simulated −10 dB |S11| bandwidth was from 1480 MHz to 2730 MHz (58.4%) and the simulated 3 dB axial ratio bandwidth was from 1650 MHz to 2820 MHz (52.4%). The peak gain of the antenna was simulated to be 4.4 dBi at 2000 MHz in the broadside direction. This was achieved while maintaining a very low profile of 0.05λ, where λ is the wavelength corresponding to the lowest operating frequency. The overall antenna dimensions were 75.0 mm × 75.0 mm × 9.2 mm.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120885658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336509
M. D. Ardakani, Nima Souzandeh, R. Karimian, S. Aïssa, S. Tatu
The article has proposed a comprehensive analysis of on-wafer millimeter-wave measurements and addressed the challenges of calibration, measurements, and circuit characterization of E-band (60 to 90 GHz) circuits implemented on a thin ceramic substrate. The used thin ceramic substrate is suitable for miniaturized hybrid microwave integrated circuit fabrication at mm-wave frequencies. The proposed method is validated on a directional coupler, and a coupled-line bandpass filter in this frequency band. Simulation and experimental results are in great agreement at such high frequencies.
{"title":"Accurate On-Wafer Measurement Technique for E-Band MHMIC Communication Systems","authors":"M. D. Ardakani, Nima Souzandeh, R. Karimian, S. Aïssa, S. Tatu","doi":"10.23919/USNC-URSINRSM51531.2021.9336509","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336509","url":null,"abstract":"The article has proposed a comprehensive analysis of on-wafer millimeter-wave measurements and addressed the challenges of calibration, measurements, and circuit characterization of E-band (60 to 90 GHz) circuits implemented on a thin ceramic substrate. The used thin ceramic substrate is suitable for miniaturized hybrid microwave integrated circuit fabrication at mm-wave frequencies. The proposed method is validated on a directional coupler, and a coupled-line bandpass filter in this frequency band. Simulation and experimental results are in great agreement at such high frequencies.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134408342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336479
S. Noghanian, Josh Stout
Wearable and implanted antennas are of interest for various applications. Most previous studies do not consider the effect of body temperature on the antenna's performance, though tissue dielectric properties are temperature-dependent, and typical human tissue temperature is between 32 °C to 37 °C. In this study, we used the ANSYS HFSS and ANSYS Icepak simulation tool to study the effect of tissue temperature on the performance of a set of antennas placed on the skin layer and implanted inside the muscle tissue. The antennas were designed to work around 1.3 GHz for an ambient temperature of 25 °C. By considering the temperature change from a human body we observed a 9.2%, and 9.0% shift in the center frequency for the implanted and external antennas, respectively.
{"title":"The Variation of Wearable and Implanted Antennas' Performance due to Body Temperature","authors":"S. Noghanian, Josh Stout","doi":"10.23919/USNC-URSINRSM51531.2021.9336479","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336479","url":null,"abstract":"Wearable and implanted antennas are of interest for various applications. Most previous studies do not consider the effect of body temperature on the antenna's performance, though tissue dielectric properties are temperature-dependent, and typical human tissue temperature is between 32 °C to 37 °C. In this study, we used the ANSYS HFSS and ANSYS Icepak simulation tool to study the effect of tissue temperature on the performance of a set of antennas placed on the skin layer and implanted inside the muscle tissue. The antennas were designed to work around 1.3 GHz for an ambient temperature of 25 °C. By considering the temperature change from a human body we observed a 9.2%, and 9.0% shift in the center frequency for the implanted and external antennas, respectively.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133994045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/usnc-ursinrsm51531.2021.9336516
{"title":"U.S. National Committee Leadership and Commission Chairs (2018-2021)","authors":"","doi":"10.23919/usnc-ursinrsm51531.2021.9336516","DOIUrl":"https://doi.org/10.23919/usnc-ursinrsm51531.2021.9336516","url":null,"abstract":"","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"466 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114627694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336497
P. Deibler, A. Maxworth
folded unipole antennas have been used in AM radio communications since mid-90s. These antennas are capable of operating within a large bandwidth. Despite the history, large bandwidth and wide usage rigorous mathematical analysis and simulation results are not widely available for this antenna configuration. In this work, we present mathematical analysis and simulation results for a bandwidth enhanced folded unipole antenna which can be used effectively in the Very Low Frequency (VLF: 3 – 30 kHz) range, while keeping the antenna dimensions feasible.
{"title":"Bandwidth Enhanced Folded Unipole Antenna for VLF Measurements","authors":"P. Deibler, A. Maxworth","doi":"10.23919/USNC-URSINRSM51531.2021.9336497","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336497","url":null,"abstract":"folded unipole antennas have been used in AM radio communications since mid-90s. These antennas are capable of operating within a large bandwidth. Despite the history, large bandwidth and wide usage rigorous mathematical analysis and simulation results are not widely available for this antenna configuration. In this work, we present mathematical analysis and simulation results for a bandwidth enhanced folded unipole antenna which can be used effectively in the Very Low Frequency (VLF: 3 – 30 kHz) range, while keeping the antenna dimensions feasible.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116343844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-04DOI: 10.23919/USNC-URSINRSM51531.2021.9336440
Elahehsadat Torabi, Pai-Yen Chen, D. Erricolo
A liquid crystal (LC)-based leaky wave antenna (LWA) capable of wide beam steering is proposed and numerically studied. The wide-angle beam-scanning (56°) is obtained at 13.6 GHz by biasing the LC with a simple uniform bias mechanism. The unique advantages of this LWA are high realized gain, low side lobes, simple mechanism for beam steering, frequency-fixed reconfiguration, non-complex design with much reduced bias lines and control circuits, low cost, low profile, compactness, and mature of LC technology.
{"title":"Reconfigurable Leaky Wave Antenna Based On Embedded Liquid Crystal","authors":"Elahehsadat Torabi, Pai-Yen Chen, D. Erricolo","doi":"10.23919/USNC-URSINRSM51531.2021.9336440","DOIUrl":"https://doi.org/10.23919/USNC-URSINRSM51531.2021.9336440","url":null,"abstract":"A liquid crystal (LC)-based leaky wave antenna (LWA) capable of wide beam steering is proposed and numerically studied. The wide-angle beam-scanning (56°) is obtained at 13.6 GHz by biasing the LC with a simple uniform bias mechanism. The unique advantages of this LWA are high realized gain, low side lobes, simple mechanism for beam steering, frequency-fixed reconfiguration, non-complex design with much reduced bias lines and control circuits, low cost, low profile, compactness, and mature of LC technology.","PeriodicalId":180982,"journal":{"name":"2021 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132472478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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