Pub Date : 2022-05-09DOI: 10.1109/mms55062.2022.9825518
A. Mahmoud, J. Ruiz-García, O. de Sagazan, M. Ettorre, R. Sauleau, D. González-Ovejero
A Luneburg lens quasi-optical beam-former is used to excite a leaky-wave antenna at 275 GHz. Both the lens and the antenna are fabricated on a Cyclic Olefin Copolymer (COC) substrate. The full system is etched on the polymer by photolithography. Numerical results show a reflection coefficient lower than −24 dB and a gain higher than 21 dBi over a 40% fractional bandwidth, spanning from 220 GHz to 330 GHz. The efficiency of the antenna is estimated to be 28% at the center frequency (275 GHz).
{"title":"High-Gain Luneburg Lens on COC Substrate for 300-GHz Applications","authors":"A. Mahmoud, J. Ruiz-García, O. de Sagazan, M. Ettorre, R. Sauleau, D. González-Ovejero","doi":"10.1109/mms55062.2022.9825518","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825518","url":null,"abstract":"A Luneburg lens quasi-optical beam-former is used to excite a leaky-wave antenna at 275 GHz. Both the lens and the antenna are fabricated on a Cyclic Olefin Copolymer (COC) substrate. The full system is etched on the polymer by photolithography. Numerical results show a reflection coefficient lower than −24 dB and a gain higher than 21 dBi over a 40% fractional bandwidth, spanning from 220 GHz to 330 GHz. The efficiency of the antenna is estimated to be 28% at the center frequency (275 GHz).","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115087810","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825525
S. Moscato, M. Oldoni, Steven Caicedo Mejillones
This manuscript presents a set of Substrate Integrated Waveguide components realized through thin-film technology and suitable for E-band applications. The non-standard choice of alumina as dielectric material leads to superior performance and increases the operational frequency of such devices, usually limited by fabrication tolerances. The intrinsic fragility of the ceramic substrate is mitigated through ad-hoc design rules which limit the via-hole density while the higher dielectric constant allows a small die size, with clear advantages in stiffness and handling robustness. Three components have been designed, manufactured and tested: a straight interconnection, a matched load, and a three-pole in-line band pass filter. All the devices show interesting performance across the 70–80 GHz spectrum portion.
{"title":"Substrate Integrated Waveguide Components on Alumina for E-band Applications","authors":"S. Moscato, M. Oldoni, Steven Caicedo Mejillones","doi":"10.1109/mms55062.2022.9825525","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825525","url":null,"abstract":"This manuscript presents a set of Substrate Integrated Waveguide components realized through thin-film technology and suitable for E-band applications. The non-standard choice of alumina as dielectric material leads to superior performance and increases the operational frequency of such devices, usually limited by fabrication tolerances. The intrinsic fragility of the ceramic substrate is mitigated through ad-hoc design rules which limit the via-hole density while the higher dielectric constant allows a small die size, with clear advantages in stiffness and handling robustness. Three components have been designed, manufactured and tested: a straight interconnection, a matched load, and a three-pole in-line band pass filter. All the devices show interesting performance across the 70–80 GHz spectrum portion.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"377 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115907175","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825598
F. Anelli, Vincenza Portosi, A. Loconsole, Alexandra Lacatena, Alessandro Quatela, D. Laneve, Antonio Diaferia, F. Prudenzano
An electromagnetic shielding, operating at f= 2.45 GHz, is designed in the context of food pasteurization treatment. The industrial belt of the plant implies an undesired leakage aperture of the microwave heating chamber, fed by multiple magnetrons to raise the temperature. The shielding consists of a one-wall uniformly corrugated rectangular waveguide followed by an array of graphite rings acting as absorbers of the residual electromagnetic power. The design is performed via a 3D electromagnetic simulation. The proposed electromagnetic shielding succeeds in attenuating the electromagnetic emission, crucial for worker safety and for equipment susceptible to electromagnetic radiation. Moreover, the electromagnetic power reflected by the shielding allows to reduce energy consumption.
{"title":"Design of Electromagnetic Shielding for Food Pasteurization via Corrugated Waveguide and Graphite Rings","authors":"F. Anelli, Vincenza Portosi, A. Loconsole, Alexandra Lacatena, Alessandro Quatela, D. Laneve, Antonio Diaferia, F. Prudenzano","doi":"10.1109/mms55062.2022.9825598","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825598","url":null,"abstract":"An electromagnetic shielding, operating at f= 2.45 GHz, is designed in the context of food pasteurization treatment. The industrial belt of the plant implies an undesired leakage aperture of the microwave heating chamber, fed by multiple magnetrons to raise the temperature. The shielding consists of a one-wall uniformly corrugated rectangular waveguide followed by an array of graphite rings acting as absorbers of the residual electromagnetic power. The design is performed via a 3D electromagnetic simulation. The proposed electromagnetic shielding succeeds in attenuating the electromagnetic emission, crucial for worker safety and for equipment susceptible to electromagnetic radiation. Moreover, the electromagnetic power reflected by the shielding allows to reduce energy consumption.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115163319","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825545
Sami Durukan, O. Palamutçuogullari, A. Yilmaz
A CMOS negative impedance converter (NIC) circuit with the cross-coupled topology is designed to generate negative resistance/capacitance/inductance in the frequency range between 100 MHz and 3 GHz. The proposed NIC circuit can cancel the parasitic gate-source capacitances of NMOS transistors which are the core elements of this type of topology. The negative impedance conversion capability of the circuit is shown analytically. It is also verified in AWR Design Environment using BSIM3 and BiCMOS transistor models comparatively. The circuit is tested with the loads 50Ω resistance, 5 pF capacitance and 10 nH inductance. The results show that the performance of the proposed NIC circuit is satisfactory and close to its theoretical values.
{"title":"CMOS Negative Impedance Converter Circuit with the Elimination of Parasitic Gate-Source Capacitance","authors":"Sami Durukan, O. Palamutçuogullari, A. Yilmaz","doi":"10.1109/mms55062.2022.9825545","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825545","url":null,"abstract":"A CMOS negative impedance converter (NIC) circuit with the cross-coupled topology is designed to generate negative resistance/capacitance/inductance in the frequency range between 100 MHz and 3 GHz. The proposed NIC circuit can cancel the parasitic gate-source capacitances of NMOS transistors which are the core elements of this type of topology. The negative impedance conversion capability of the circuit is shown analytically. It is also verified in AWR Design Environment using BSIM3 and BiCMOS transistor models comparatively. The circuit is tested with the loads 50Ω resistance, 5 pF capacitance and 10 nH inductance. The results show that the performance of the proposed NIC circuit is satisfactory and close to its theoretical values.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125393392","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825548
Enrique López-Oliver, C. Tomassoni
In this paper, we provide an overview of the stere-olithography (SLA) manufacturing process applied to the design of microwave filters. For that purpose, a spherical cavity that operates with the higher order mode TE101 has been used in order to design filters oriented for additive manufacturing. The characteristics of such mode (high Q-factor and size) makes it an interesting choice for filters manufactured with 3-D printers. For validation purposes, two doublet prototypes with different configurations and mechanical structures have been manufactured with an SLA 3-D printer, metallized, and measured. Results show various discrepancies between the two prototypes: with measurements matching fairly well with the simulations for one prototype, while a certain frequency shift is present for the other one.
{"title":"Stereolithography Additive Manufacturing of Overmoded Spherical Filters","authors":"Enrique López-Oliver, C. Tomassoni","doi":"10.1109/mms55062.2022.9825548","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825548","url":null,"abstract":"In this paper, we provide an overview of the stere-olithography (SLA) manufacturing process applied to the design of microwave filters. For that purpose, a spherical cavity that operates with the higher order mode TE101 has been used in order to design filters oriented for additive manufacturing. The characteristics of such mode (high Q-factor and size) makes it an interesting choice for filters manufactured with 3-D printers. For validation purposes, two doublet prototypes with different configurations and mechanical structures have been manufactured with an SLA 3-D printer, metallized, and measured. Results show various discrepancies between the two prototypes: with measurements matching fairly well with the simulations for one prototype, while a certain frequency shift is present for the other one.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126305069","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825607
A. Capozzoli, C. Curcio, A. Liseno
We model a radiator/scatterer using an equivalent radiator. We determine shape and size of a radiating surface producing, on a region D, an electromagnetic field close to that generated by the primary radiator/scatterer. For a fixed equivalent radiator's shape, we deal with the dimensioning issue only. The method exploits the Singular Value Decomposition (SVDs) of the operators relating the ra-diator/scatterer to the field on D and the equivalent panel to the field on D. The size of the equivalent radiator is determined by minimizing the maximum error between the primary radi-ated/scattered field and that radiated using $D^{prime}$. We show numerical test cases for a planar radiator with rectan-gular shape.
{"title":"Dimensioning flat, rectangular equivalent radiators","authors":"A. Capozzoli, C. Curcio, A. Liseno","doi":"10.1109/mms55062.2022.9825607","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825607","url":null,"abstract":"We model a radiator/scatterer using an equivalent radiator. We determine shape and size of a radiating surface producing, on a region D, an electromagnetic field close to that generated by the primary radiator/scatterer. For a fixed equivalent radiator's shape, we deal with the dimensioning issue only. The method exploits the Singular Value Decomposition (SVDs) of the operators relating the ra-diator/scatterer to the field on D and the equivalent panel to the field on D. The size of the equivalent radiator is determined by minimizing the maximum error between the primary radi-ated/scattered field and that radiated using $D^{prime}$. We show numerical test cases for a planar radiator with rectan-gular shape.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131307118","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825605
F. Giusti, S. Maci, E. Martini, M. Albani
In this work, numerically efficient surface field optimizations for transverse electric (TE) and magnetic (TM) polarizations are presented to design locally lossless and passive metasurfaces (MTSs) performing anomalous refraction. The MTS consists of the cascade of three patterned metallic layers, modeled through homogenized impedance sheets. A certain number of evanescent Floquet modes are introduced through an optimization procedure aiming at minimizing the real part of the sheets surface impedance. Numerical results show a good agreement between the two cases for a near-perfect anomalous refraction without reflection considering arbitrary incidence and refraction angles.
{"title":"Wide-Angle Anomalous Refraction Using Efficient Surface Field Optimization for Different Polarizations","authors":"F. Giusti, S. Maci, E. Martini, M. Albani","doi":"10.1109/mms55062.2022.9825605","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825605","url":null,"abstract":"In this work, numerically efficient surface field optimizations for transverse electric (TE) and magnetic (TM) polarizations are presented to design locally lossless and passive metasurfaces (MTSs) performing anomalous refraction. The MTS consists of the cascade of three patterned metallic layers, modeled through homogenized impedance sheets. A certain number of evanescent Floquet modes are introduced through an optimization procedure aiming at minimizing the real part of the sheets surface impedance. Numerical results show a good agreement between the two cases for a near-perfect anomalous refraction without reflection considering arbitrary incidence and refraction angles.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131312755","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825561
B. Fischer, G. Valério
In this paper we propose closed-form formulas for the effective refractive index of a wave propagating along two parallel corrugated surfaces arranged in a glide-symmetric configuration, having a small groove compared to the period. This kind of structure has proved to suppress the frequency dispersion typical of periodic material when the gap between the surfaces is small. The closed-form expressions show analytically this property and prove it for the first time, by means of the lack of a frequency dependence.
{"title":"Homogenization and Dispersion Properties of Glide-Symmetric Corrugated Metasurfaces","authors":"B. Fischer, G. Valério","doi":"10.1109/mms55062.2022.9825561","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825561","url":null,"abstract":"In this paper we propose closed-form formulas for the effective refractive index of a wave propagating along two parallel corrugated surfaces arranged in a glide-symmetric configuration, having a small groove compared to the period. This kind of structure has proved to suppress the frequency dispersion typical of periodic material when the gap between the surfaces is small. The closed-form expressions show analytically this property and prove it for the first time, by means of the lack of a frequency dependence.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126877433","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825511
A. Alwakil, R. Sauleau, M. Ettorre, R. Contreres
A high-gain, broadband, and low-profile Continuous Transverse Stub (CTS) antenna array is presented at Ka-band for SatCom applications. This antenna is designed to cover the downlink (17.7-20.2 GHz) and the uplink (27.5-30 GHz) bands. This array comprises 16 long slots fed in parallel by a corrugated parallel plate waveguide beam forming network. The design and simulations results are summarized, together with a simple design methodology for different network components. The dual-linear polarization is achieved by using two orthogonal modes namely: the quasi-transverse electric magnetic mode (QTEM) and the 1st order transverse electric mode (QTE1). The antenna array is well matched $(mathrm{S}_{11} < -10 text{dB})$. The maximum realized gain (in one plane) is around 15 dB at 29 GHz and around 12 dB at 19 GHz for both polarizations.
{"title":"Dual-Band, Dual-polarized 16-Slot Continuous Transverse Stub Array for SatCom Applications","authors":"A. Alwakil, R. Sauleau, M. Ettorre, R. Contreres","doi":"10.1109/mms55062.2022.9825511","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825511","url":null,"abstract":"A high-gain, broadband, and low-profile Continuous Transverse Stub (CTS) antenna array is presented at Ka-band for SatCom applications. This antenna is designed to cover the downlink (17.7-20.2 GHz) and the uplink (27.5-30 GHz) bands. This array comprises 16 long slots fed in parallel by a corrugated parallel plate waveguide beam forming network. The design and simulations results are summarized, together with a simple design methodology for different network components. The dual-linear polarization is achieved by using two orthogonal modes namely: the quasi-transverse electric magnetic mode (QTEM) and the 1st order transverse electric mode (QTE1). The antenna array is well matched $(mathrm{S}_{11} < -10 text{dB})$. The maximum realized gain (in one plane) is around 15 dB at 29 GHz and around 12 dB at 19 GHz for both polarizations.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132682177","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 : 2022-05-09DOI: 10.1109/mms55062.2022.9825509
Lorenzo Bezzetto, L. Rinaldi, Francesco Linsalata, D. Tagliaferri, Marouan Mizmizi, M. Magarini, Damiano Badini, C. Mazzucco, U. Spagnolini
The requirements dictated by Sixth Generation (6G) to support Vehicle-to-Everything (V2X) communications together with the propagation drawbacks at high frequencies impose the use of highly directive beams. Conventional Beam Management (BM) approaches based on an exhaustive beam search are characterized by high training times and frequent link interruptions. To overcome these issues side information coming from sensors at both vehicular UE, e.g., Global Position System (GPS), and Base Station (BS), e.g., radar, side are integrated in the BM procedures. This paper shows pros and cons of the two approaches and propose a joint radar- and GPS-aided BM procedure that allows to reduce training time in typical urban scenario.
{"title":"A Joint Radar- and GPS- aided Beam Management at Infrastructure","authors":"Lorenzo Bezzetto, L. Rinaldi, Francesco Linsalata, D. Tagliaferri, Marouan Mizmizi, M. Magarini, Damiano Badini, C. Mazzucco, U. Spagnolini","doi":"10.1109/mms55062.2022.9825509","DOIUrl":"https://doi.org/10.1109/mms55062.2022.9825509","url":null,"abstract":"The requirements dictated by Sixth Generation (6G) to support Vehicle-to-Everything (V2X) communications together with the propagation drawbacks at high frequencies impose the use of highly directive beams. Conventional Beam Management (BM) approaches based on an exhaustive beam search are characterized by high training times and frequent link interruptions. To overcome these issues side information coming from sensors at both vehicular UE, e.g., Global Position System (GPS), and Base Station (BS), e.g., radar, side are integrated in the BM procedures. This paper shows pros and cons of the two approaches and propose a joint radar- and GPS-aided BM procedure that allows to reduce training time in typical urban scenario.","PeriodicalId":124088,"journal":{"name":"2022 Microwave Mediterranean Symposium (MMS)","volume":"5 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131456591","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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