Pub Date : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814216
Saptarshi Ghosh
A miniaturized-element frequency selective surface (FSS) based filter geometry has been designed and analyzed in this paper. The geometry is made of convoluted meander lines printed on both sides of a dielectric and the patterns are joined by metallic vias engraved through the substrate, thereby reducing the operating frequency. This results in a compact 2.5-dimensional filter geometry exhibiting a combination of bandstop and bandpass responses, having unit cell dimensions of 0.044λ × 0.044λ, where λ is the operating wavelength at the lowest operating frequency (1.10 GHz). The proposed topology is four-fold symmetric as well as angularly stable for different polarizations. Parametric variation and other set of analyses have also been carried out to explain the operating principle of the proposed FSS. The proposed FSS design can be considered as a potential candidate for several radome applications.
{"title":"A 2.5-Dimensional Miniaturized Frequency Selective Surface based on Convoluted Geometry","authors":"Saptarshi Ghosh","doi":"10.23919/AT-AP-RASC54737.2022.9814216","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814216","url":null,"abstract":"A miniaturized-element frequency selective surface (FSS) based filter geometry has been designed and analyzed in this paper. The geometry is made of convoluted meander lines printed on both sides of a dielectric and the patterns are joined by metallic vias engraved through the substrate, thereby reducing the operating frequency. This results in a compact 2.5-dimensional filter geometry exhibiting a combination of bandstop and bandpass responses, having unit cell dimensions of 0.044λ × 0.044λ, where λ is the operating wavelength at the lowest operating frequency (1.10 GHz). The proposed topology is four-fold symmetric as well as angularly stable for different polarizations. Parametric variation and other set of analyses have also been carried out to explain the operating principle of the proposed FSS. The proposed FSS design can be considered as a potential candidate for several radome applications.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"459 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116182480","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 : 2022-05-29DOI: 10.23919/at-ap-rasc54737.2022.9814240
N. Curreli
Layered semiconductors of IIIA–VIA group, have attracted considerable attention in (opto)electronic applications thanks to their atomically thin structures and their (opto)electronic properties. Currently, two-dimensional (2D) indium selenide (InSe) and gallium selenide (GaSe) are emerging as promising candidates for the realization of light-driven thin-field effect transistors (FETs) and photodetectors due to their high intrinsic mobility (102 – 103 cm2V−1s−1) and their direct bandgap in an energy range (1.3 – 3.2 eV) suitable for UV, visible and NIR light detection. A requirement for large-scale electronic applications is the development of low-cost, reliable industrial production processes. In this context, it has been recognized that liquid-phase exfoliation (LPE) of InSe and GaSe is a cost-effective and environmentally friendly way to formulate inks for FETs, presenting a significant advantage over conventional methods. In this study, printed InSe and GaSe phototransistors are presented showing high responsivity (13 – 274 AW−1) and fast response velocity (15 – 32 ms). Furthermore, GaSe phototransistors show an on-off current ratio of ~ 103 in the dark, which can be readily achieved without the need for complex design of drain/source contacts or gating techniques. The gate-dependent photoresponse shows that the phototransistors can be modulated by the gate voltage. These results demonstrate that liquid-phase exfoliated InSe and GaSe are valid candidates for low-cost high-performance (opto)electronic devices.
{"title":"Scalable Production of Light-Sensitive Devices from Liquid-Phase Exfoliated Transition Metal Monochalcogenide Flakes","authors":"N. Curreli","doi":"10.23919/at-ap-rasc54737.2022.9814240","DOIUrl":"https://doi.org/10.23919/at-ap-rasc54737.2022.9814240","url":null,"abstract":"Layered semiconductors of IIIA–VIA group, have attracted considerable attention in (opto)electronic applications thanks to their atomically thin structures and their (opto)electronic properties. Currently, two-dimensional (2D) indium selenide (InSe) and gallium selenide (GaSe) are emerging as promising candidates for the realization of light-driven thin-field effect transistors (FETs) and photodetectors due to their high intrinsic mobility (102 – 103 cm2V−1s−1) and their direct bandgap in an energy range (1.3 – 3.2 eV) suitable for UV, visible and NIR light detection. A requirement for large-scale electronic applications is the development of low-cost, reliable industrial production processes. In this context, it has been recognized that liquid-phase exfoliation (LPE) of InSe and GaSe is a cost-effective and environmentally friendly way to formulate inks for FETs, presenting a significant advantage over conventional methods. In this study, printed InSe and GaSe phototransistors are presented showing high responsivity (13 – 274 AW−1) and fast response velocity (15 – 32 ms). Furthermore, GaSe phototransistors show an on-off current ratio of ~ 103 in the dark, which can be readily achieved without the need for complex design of drain/source contacts or gating techniques. The gate-dependent photoresponse shows that the phototransistors can be modulated by the gate voltage. These results demonstrate that liquid-phase exfoliated InSe and GaSe are valid candidates for low-cost high-performance (opto)electronic devices.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116442858","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814281
Shotaro Kodama, Yui Otagaki, H. Murata
A new antenna-coupled electrode electro-optic (EO) modulator for direct conversion from D-band wireless signals to optical signals is analyzed and designed. In this EO modulator, the modulation efficiency in the D-band is increased by using the stacked structure of a thin LiNbO3 film and fluorine-based resin substrate. In the simulation, modulation electric field of about 2500 times larger than received D-band wireless signal on the antenna surface was observed along the resonant standing-wave resonant electrode, which enables to have an effective signal conversion from D-band wireless to optical signals.
{"title":"Millimeter-Wave D-band Antenna-Coupled Electrode Electro-Optic Modulator","authors":"Shotaro Kodama, Yui Otagaki, H. Murata","doi":"10.23919/AT-AP-RASC54737.2022.9814281","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814281","url":null,"abstract":"A new antenna-coupled electrode electro-optic (EO) modulator for direct conversion from D-band wireless signals to optical signals is analyzed and designed. In this EO modulator, the modulation efficiency in the D-band is increased by using the stacked structure of a thin LiNbO3 film and fluorine-based resin substrate. In the simulation, modulation electric field of about 2500 times larger than received D-band wireless signal on the antenna surface was observed along the resonant standing-wave resonant electrode, which enables to have an effective signal conversion from D-band wireless to optical signals.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122018919","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814229
N. Sikirica, Weinmin Zhen, R. Filjar
Total Electron Content (TEC) affects GNSS positioning accuracy due to its effects on GNSS pseudorange measurement. GNSS resilience against the ionospheric effects requires improved accuracy of TEC predictive model. Here a contribution to the subject of self-adaptive positioning environment-aware TEC predictive model development is provided trough statistical analysis of mid-latitude TEC time series observed during rapidly developing short-term geomagnetic storms. Statistical properties of TEC sets and time series are examined to address similarities in range, variability, and information content in order to establish rapidly developing short-term geomagnetic storms as a separate class of the ionospheric event cases, with potential to degrade GNSS positioning accuracy. Results of the analysis show cases of rapidly developing short-term geomagnetic storm share similar statistical properties, notably Shannon entropy and spike index, of TEC observations, which renders them eligible to be addressed with a common TEC prediction model to rise GNSS resilience against the ionospheric effects.
{"title":"Statistical properties of mid-latitude TEC time series observed during rapidly developing short-term geomagnetic storms: A contribution to GNSS-related TEC predictive model development","authors":"N. Sikirica, Weinmin Zhen, R. Filjar","doi":"10.23919/AT-AP-RASC54737.2022.9814229","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814229","url":null,"abstract":"Total Electron Content (TEC) affects GNSS positioning accuracy due to its effects on GNSS pseudorange measurement. GNSS resilience against the ionospheric effects requires improved accuracy of TEC predictive model. Here a contribution to the subject of self-adaptive positioning environment-aware TEC predictive model development is provided trough statistical analysis of mid-latitude TEC time series observed during rapidly developing short-term geomagnetic storms. Statistical properties of TEC sets and time series are examined to address similarities in range, variability, and information content in order to establish rapidly developing short-term geomagnetic storms as a separate class of the ionospheric event cases, with potential to degrade GNSS positioning accuracy. Results of the analysis show cases of rapidly developing short-term geomagnetic storm share similar statistical properties, notably Shannon entropy and spike index, of TEC observations, which renders them eligible to be addressed with a common TEC prediction model to rise GNSS resilience against the ionospheric effects.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124011564","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 : 2022-05-29DOI: 10.23919/at-ap-rasc54737.2022.9814312
J.-F. Ripoil, T. Farges, D. Malaspina, G. Cunningham, E. Lay, G. Hospodarsky, C. Kletzing, J. Wygant, S. Pedeboy
This summary article gathers a series of new results related to the characterization of the electromagnetic properties of lightning strokes both on Earth and in space through lightning-generated whistlers.
{"title":"From the Electromagnetic Power of Lightning on Earth to Lightning-Generated Whistlers in Space","authors":"J.-F. Ripoil, T. Farges, D. Malaspina, G. Cunningham, E. Lay, G. Hospodarsky, C. Kletzing, J. Wygant, S. Pedeboy","doi":"10.23919/at-ap-rasc54737.2022.9814312","DOIUrl":"https://doi.org/10.23919/at-ap-rasc54737.2022.9814312","url":null,"abstract":"This summary article gathers a series of new results related to the characterization of the electromagnetic properties of lightning strokes both on Earth and in space through lightning-generated whistlers.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"394 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124455633","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814286
Savvas Chalkidis, E. Vassos, A. Feresidis
A dual function metasurface with transparent materials is investigated. The design has been inspired from both high impedance surface (HIS) and frequency selective surface (FSS) theories. In order to obtain reflective and transmissive functionality for different sides of the suggested surface, two different geometries are designed on each side of a quartz substrate. The front geometry of the unit cell comprises four stripes that contribute to the reflection of TE mode and the rear layer of the unit cell comprises a slotted patch that functions as a polarization filter for the TE mode allowing transmission of TM mode. The design and simulation of the unit cell presented within this document was produced using full wave simulation software (CST Microwave Studio). The single unit cell is simulated with periodic boundary conditions at the operating frequency of 26.5GΗz. Materials such as ITO, quartz and silver have been used for the rear element, the substrate and the ultra-thin stripes respectively, thus we can assume that the structure is at least semi-transparent.
{"title":"Polarization independent dual function metasurface using transparent materials","authors":"Savvas Chalkidis, E. Vassos, A. Feresidis","doi":"10.23919/AT-AP-RASC54737.2022.9814286","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814286","url":null,"abstract":"A dual function metasurface with transparent materials is investigated. The design has been inspired from both high impedance surface (HIS) and frequency selective surface (FSS) theories. In order to obtain reflective and transmissive functionality for different sides of the suggested surface, two different geometries are designed on each side of a quartz substrate. The front geometry of the unit cell comprises four stripes that contribute to the reflection of TE mode and the rear layer of the unit cell comprises a slotted patch that functions as a polarization filter for the TE mode allowing transmission of TM mode. The design and simulation of the unit cell presented within this document was produced using full wave simulation software (CST Microwave Studio). The single unit cell is simulated with periodic boundary conditions at the operating frequency of 26.5GΗz. Materials such as ITO, quartz and silver have been used for the rear element, the substrate and the ultra-thin stripes respectively, thus we can assume that the structure is at least semi-transparent.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125013709","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814380
M. Sokołowski, D. Price, R. Wayth
Despite hundreds of Fast Radio Burst (FRB) detections at frequencies above 400 MHz, only a handful of FRBs have been observed at lower frequencies, hence the FRB rates at frequencies below 350 MHz remain highly uncertain. This paper describes our efforts to increase the observing bandwidth (to ∼40 MHz) and imaging time resolution (to ∼10 ms) of the Engineering Development Array 2 (EDA2), a prototype station of the low-frequency Square Kilometre Array (SKA-Low), which will increase its sensitivity to short, FRB-like, radio pulses by two orders of magnitude and convert it into a high-time resolution all-sky monitor for FRBs and signals from extraterrestrial intelligence (techno-signatures). Based on highly uncertain FRB rates at these frequencies and sensitivity of SKA-Low stations, we expect to detect up to hundreds of FRBs per year and firmly establish the FRB rates in this relatively under-explored parameter space.
{"title":"A High Time Resolution All-Sky Monitor for Fast Radio Bursts and Technosignatures","authors":"M. Sokołowski, D. Price, R. Wayth","doi":"10.23919/AT-AP-RASC54737.2022.9814380","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814380","url":null,"abstract":"Despite hundreds of Fast Radio Burst (FRB) detections at frequencies above 400 MHz, only a handful of FRBs have been observed at lower frequencies, hence the FRB rates at frequencies below 350 MHz remain highly uncertain. This paper describes our efforts to increase the observing bandwidth (to ∼40 MHz) and imaging time resolution (to ∼10 ms) of the Engineering Development Array 2 (EDA2), a prototype station of the low-frequency Square Kilometre Array (SKA-Low), which will increase its sensitivity to short, FRB-like, radio pulses by two orders of magnitude and convert it into a high-time resolution all-sky monitor for FRBs and signals from extraterrestrial intelligence (techno-signatures). Based on highly uncertain FRB rates at these frequencies and sensitivity of SKA-Low stations, we expect to detect up to hundreds of FRBs per year and firmly establish the FRB rates in this relatively under-explored parameter space.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128748296","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814327
A. Bouchalkha, J. Coronel, A. Hableel, M. Meriac, G. Matras, C. Kasmi
The mini spectrometer design is discussed, and two models using finite elements approach are presented. The simplest optical design is used to reduce the optical signal losses. The two models considered are based on the use of transmission and reflection gratings respectively. The two designs are compared based on the obtained wavelength resolution. Our results showed that the spectrometer based on the transmission diffraction grating performed better and showed good wavelength resolution with a small footprint making it suitable for space deployment.
{"title":"Optical Design and Performance Evaluation of a Mini Spectrometer for Space Applications","authors":"A. Bouchalkha, J. Coronel, A. Hableel, M. Meriac, G. Matras, C. Kasmi","doi":"10.23919/AT-AP-RASC54737.2022.9814327","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814327","url":null,"abstract":"The mini spectrometer design is discussed, and two models using finite elements approach are presented. The simplest optical design is used to reduce the optical signal losses. The two models considered are based on the use of transmission and reflection gratings respectively. The two designs are compared based on the obtained wavelength resolution. Our results showed that the spectrometer based on the transmission diffraction grating performed better and showed good wavelength resolution with a small footprint making it suitable for space deployment.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128157503","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814276
R. Chakraborty, P. S. Menghal, M. Harshitha, M. Sodunke
In this study, it has been attempted to understand the role of various factors such as orography, moisture availability, aerosol nucleation, and atmospheric instability behind the spatio-temporal distribution of lightning properties over the Equatorial Central African region which experiences the most frequent lightning activity globally. Detailed statistical analysis using high-resolution satellite observations reveals very high lightning frequencies along the Virunga Mountain ranges during the summer season owing to its orographic advantage while the maximum flash radiances are observed over the relatively low-lying Congo River Basin during the month of June because of high moisture, instability, and aerosol availability in that region.
{"title":"Climatology of lightning activities across the Equatorial African region","authors":"R. Chakraborty, P. S. Menghal, M. Harshitha, M. Sodunke","doi":"10.23919/AT-AP-RASC54737.2022.9814276","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814276","url":null,"abstract":"In this study, it has been attempted to understand the role of various factors such as orography, moisture availability, aerosol nucleation, and atmospheric instability behind the spatio-temporal distribution of lightning properties over the Equatorial Central African region which experiences the most frequent lightning activity globally. Detailed statistical analysis using high-resolution satellite observations reveals very high lightning frequencies along the Virunga Mountain ranges during the summer season owing to its orographic advantage while the maximum flash radiances are observed over the relatively low-lying Congo River Basin during the month of June because of high moisture, instability, and aerosol availability in that region.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129648514","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 : 2022-05-29DOI: 10.23919/AT-AP-RASC54737.2022.9814177
Ana Buesa-Zubiria, J. Esteban
The characterization of different transmission media has been carried out using the canonical polyadic decomposition formulation of the multi-line TRL calibration. Some improvements to this approach are presented. The measurement of microstrip lines from 500 MHz to 20.5 GHz has been carried out and the results discussed. Furthermore, a pseudo-SIW waveguide has also been characterized in the band from 4.5 to 7.5 GHz.
{"title":"Multi-line TRL Calibration for the Characterization of Transmission Media","authors":"Ana Buesa-Zubiria, J. Esteban","doi":"10.23919/AT-AP-RASC54737.2022.9814177","DOIUrl":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814177","url":null,"abstract":"The characterization of different transmission media has been carried out using the canonical polyadic decomposition formulation of the multi-line TRL calibration. Some improvements to this approach are presented. The measurement of microstrip lines from 500 MHz to 20.5 GHz has been carried out and the results discussed. Furthermore, a pseudo-SIW waveguide has also been characterized in the band from 4.5 to 7.5 GHz.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130034016","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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