INNOVANDO EN TECNOLOGIAS RADIO PARA REDES 5G. PROPAGACION
TEC2014-55735-C3-3-R
•
Nombre agencia financiadora Ministerio de Economía y Competitividad
Acrónimo agencia financiadora MINECO
Programa Programa Estatal de I+D+I Orientada a los Retos de la Sociedad
Subprograma Todos los retos
Convocatoria Retos Investigación: Proyectos de I+D+I (2014)
Año convocatoria 2014
Unidad de gestión Dirección General de Investigación Científica y Técnica
Centro beneficiario UNIVERSIDAD DE VIGO
Centro realización DEPARTAMENTO TEORÍA DE LA SEÑAL Y COMUNICACIONES
Identificador persistente http://dx.doi.org/10.13039/501100003329
Publicaciones
Found(s) 7 result(s)
Found(s) 1 page(s)
Found(s) 1 page(s)
Synthesis of one dimensional electromagnetic bandgap structures with fully controlled parameters
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Arnedo Gil, Israel
- Chudzik, Magdalena
- Percaz Ciriza, Jon Mikel
- Arregui Padilla, Iván
- Teberio Berdún, Fernando
- Benito Pertusa, David
- Lopetegui Beregaña, José María
- Gómez Laso, Miguel Ángel
In this paper, we propose a novel synthesis strategy
for the design of one dimensional electromagnetic bandgap (1-
D-EBG) structures where all the performance parameters of
these devices can fully be controlled, i.e., the central frequency
of the forbidden band, its attenuation level and bandwidth,
and the ripple level at the passbands. The novel synthesis
strategy employs a new inverse-scattering technique to accurately
synthesize the 1-D-EBG structure, targeting a properly
interpolated version of a classical periodic filter fulfilling the
required frequency specifications. The new inverse-scattering
technique follows a continuous layer peeling approach and relies
on the coupled-mode theory to precisely model the microwave
structures. Telecommunication and radar systems, as well as
material characterization devices, will be profited by this proposal
with which enhanced filters, sensors, power dividers, couplers,
mixers, oscillators, and amplifiers can be designed in many
different technologies. As a proof of concept, a 1-D-EBG structure
in microstrip technology with a single forbidden band (free of
spurious stopband replicas), with attenuation level of 30 dB,
fractional bandwidth larger than 100%, and return loss level
at the passbands of 20 dB, has been designed and fabricated.
The measurements obtained are in very good agreement with
the simulations and target specifications, being free of spurious
replicas up to the 15th harmonic, showing the robustness and
very good performance of the novel design strategy proposed., This work was supported by MINECO (Spain) under Projects TEC2014-51902-C2-2-R and TEC2014-55735-C3-R.
for the design of one dimensional electromagnetic bandgap (1-
D-EBG) structures where all the performance parameters of
these devices can fully be controlled, i.e., the central frequency
of the forbidden band, its attenuation level and bandwidth,
and the ripple level at the passbands. The novel synthesis
strategy employs a new inverse-scattering technique to accurately
synthesize the 1-D-EBG structure, targeting a properly
interpolated version of a classical periodic filter fulfilling the
required frequency specifications. The new inverse-scattering
technique follows a continuous layer peeling approach and relies
on the coupled-mode theory to precisely model the microwave
structures. Telecommunication and radar systems, as well as
material characterization devices, will be profited by this proposal
with which enhanced filters, sensors, power dividers, couplers,
mixers, oscillators, and amplifiers can be designed in many
different technologies. As a proof of concept, a 1-D-EBG structure
in microstrip technology with a single forbidden band (free of
spurious stopband replicas), with attenuation level of 30 dB,
fractional bandwidth larger than 100%, and return loss level
at the passbands of 20 dB, has been designed and fabricated.
The measurements obtained are in very good agreement with
the simulations and target specifications, being free of spurious
replicas up to the 15th harmonic, showing the robustness and
very good performance of the novel design strategy proposed., This work was supported by MINECO (Spain) under Projects TEC2014-51902-C2-2-R and TEC2014-55735-C3-R.
Design procedure for new compact waffle-iron ilters with transmission zeros
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Teberio Berdún, Fernando
- Percaz Ciriza, Jon Mikel
- Arregui Padilla, Iván
- Martín Iglesias, Petronilo
- Lopetegui Beregaña, José María
- Gómez Laso, Miguel Ángel
- Arnedo Gil, Israel
In this paper, a novel waffle-iron filter with
transmission zeros at multiple frequencies, along with its design
procedure, is presented. The proposed filter features a high-power
behavior and a wide rejected band in a single compact structure
by means of a set of transmission zeros that can also be placed close
to the passband. Its design method rests on a divide-and-rule
strategy, where the physical dimensions of the constituent design
entities (DEs) can be easily computed in a very short time. A novel
high-power compact waffle-iron filter with transmission zeros at
multiple frequencies has been designed as well as several classical
waffle-iron filters with transmission zeros at one frequency only,
using a detailed step-by-step procedure which avoids the bruteforce
optimizations needed until now. Multipactor and corona
simulations have been conducted proving a high-power handling
capability of 1.8 kW and 78.6 W, respectively. A prototype of the
novel filter has been fabricated, obtaining a remarkable
accordance between the simulated and measured results., This work was supported in part by the ESA’s
Networking/Partnering Initiati
ve under Contract 4000114859/15/NL/HK and
in part by the MINECO (Spain) under Project TEC2017-85529-C3-2-R,
Project TEC2014-55735-C3-R, and Project TEC2014-51902-C2-2-R. This
paper is an expanded version from the
2018 International Microwave Sym-
posium, Philadelphia, PA, USA, June 10–15 2018.
(Corresponding author:
Fernando Teberio.)
transmission zeros at multiple frequencies, along with its design
procedure, is presented. The proposed filter features a high-power
behavior and a wide rejected band in a single compact structure
by means of a set of transmission zeros that can also be placed close
to the passband. Its design method rests on a divide-and-rule
strategy, where the physical dimensions of the constituent design
entities (DEs) can be easily computed in a very short time. A novel
high-power compact waffle-iron filter with transmission zeros at
multiple frequencies has been designed as well as several classical
waffle-iron filters with transmission zeros at one frequency only,
using a detailed step-by-step procedure which avoids the bruteforce
optimizations needed until now. Multipactor and corona
simulations have been conducted proving a high-power handling
capability of 1.8 kW and 78.6 W, respectively. A prototype of the
novel filter has been fabricated, obtaining a remarkable
accordance between the simulated and measured results., This work was supported in part by the ESA’s
Networking/Partnering Initiati
ve under Contract 4000114859/15/NL/HK and
in part by the MINECO (Spain) under Project TEC2017-85529-C3-2-R,
Project TEC2014-55735-C3-R, and Project TEC2014-51902-C2-2-R. This
paper is an expanded version from the
2018 International Microwave Sym-
posium, Philadelphia, PA, USA, June 10–15 2018.
(Corresponding author:
Fernando Teberio.)
Chirping techniques to maximize the power-handling capability of harmonic waveguide low-pass filters
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Teberio Berdún, Fernando
- Arregui Padilla, Iván
- Gómez Torrent, Adrián
- Arnedo Gil, Israel
- Chudzik, Magdalena
- Zedler, Michael
- Goertz, Franz-Josef
- Jost, Rolf
- Lopetegui Beregaña, José María
- Gómez Laso, Miguel Ángel
A novel chirping technique is applied to the design
of very high-power waveguide harmonic low-pass filters. The
technique could be used, for instance, to avoid multipactor
testing in multicarrier systems such as the output multiplexer
of a communications satellite. The novel chirped filter shows
low insertion loss, all higher order mode suppression, and broad
stopband rejection up to the third harmonic. This paper focuses
on the maximization of the filter power-handling capability
without affecting its excellent frequency behavior. Given a certain
frequency response, the E-plane mechanical gap of the structure
and the length (in the propagation direction) of the waveguide
sections between its constituent bandstop elements can be considered
to improve the high-power behavior. However, the power
performance may not be sufficient yet in some applications if
we wish, for instance, multipactor testing to be avoided. This
becomes feasible by chirping the length (in the propagation
direction) of the bandstop elements. An example for Ku band is
discussed for relevant frequency specifications. An improvement
from ∼8 kW (non-chirped filter) to more than 100 kW (chirped
filter) is obtained. As a reference, the equivalent waffle-iron filter
can handle only 0.15 kW. Such high-power threshold levels have
never been reported before for such kind of filters., This work was supported by the Spanish Ministry of Science and Innovation under Project TEC 2014-55735‐C3‐R.
of very high-power waveguide harmonic low-pass filters. The
technique could be used, for instance, to avoid multipactor
testing in multicarrier systems such as the output multiplexer
of a communications satellite. The novel chirped filter shows
low insertion loss, all higher order mode suppression, and broad
stopband rejection up to the third harmonic. This paper focuses
on the maximization of the filter power-handling capability
without affecting its excellent frequency behavior. Given a certain
frequency response, the E-plane mechanical gap of the structure
and the length (in the propagation direction) of the waveguide
sections between its constituent bandstop elements can be considered
to improve the high-power behavior. However, the power
performance may not be sufficient yet in some applications if
we wish, for instance, multipactor testing to be avoided. This
becomes feasible by chirping the length (in the propagation
direction) of the bandstop elements. An example for Ku band is
discussed for relevant frequency specifications. An improvement
from ∼8 kW (non-chirped filter) to more than 100 kW (chirped
filter) is obtained. As a reference, the equivalent waffle-iron filter
can handle only 0.15 kW. Such high-power threshold levels have
never been reported before for such kind of filters., This work was supported by the Spanish Ministry of Science and Innovation under Project TEC 2014-55735‐C3‐R.
Proyecto: MINECO//TEC2014-55735-C3-3-R
Routing with classical corrugated waveguide low-pass filters with embedded bends
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Teberio Berdún, Fernando
- Percaz Ciriza, Jon Mikel
- Arregui Padilla, Iván
- Martín Iglesias, Petronilo
- Lopetegui Beregaña, José María
- Gómez Laso, Miguel Ángel
- Arnedo Gil, Israel
A very simple design method to embed routing capabilities in classical corrugated filters
is presented in this paper. The method is based on the calculation of the heights and lengths of the
so-called filters design building blocks, by means of a consecutive and separate extraction of their local
reflection coefficients along the device. The proposed technique is proved with a 17th-order Zolotarev filter
whose topology is bent twice so that the input and output ports are in the same plane while
preserving the in-line filters behaviour. This new filter allows the possibility of eliminating subsequent
bending structures, reducing the insertion loss, weight, and PIM., This work was supported by MINECO (Spain) (grant TEC2014-55735-C3-R, TEC2014-51902-C2-2-R,
and TEC2017-85529-C3-2-R).
is presented in this paper. The method is based on the calculation of the heights and lengths of the
so-called filters design building blocks, by means of a consecutive and separate extraction of their local
reflection coefficients along the device. The proposed technique is proved with a 17th-order Zolotarev filter
whose topology is bent twice so that the input and output ports are in the same plane while
preserving the in-line filters behaviour. This new filter allows the possibility of eliminating subsequent
bending structures, reducing the insertion loss, weight, and PIM., This work was supported by MINECO (Spain) (grant TEC2014-55735-C3-R, TEC2014-51902-C2-2-R,
and TEC2017-85529-C3-2-R).
Resonant quasi-periodic structure for rectangular waveguide technology with wide stopband and band-pass behavior
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Arregui Padilla, Iván
- Teberio Berdún, Fernando
- Arnedo Gil, Israel
- Percaz Ciriza, Jon Mikel
- Gómez Torrent, Adrián
- Chudzik, Magdalena
- Gómez Laso, Miguel Ángel
- Lopetegui Beregaña, José María
In this paper, a novel quasi-periodic structure for rectangular waveguide technology is
proposed. The constituent unit cells of the structure feature a resonant behavior, providing high
attenuation levels in the stopband with a compact (small period) size. By applying a smooth taper-like
variation to the height of the periodic structure, very good matching is achieved in the passband while
the bandwidth of the stopband is strongly increased. Moreover, by smoothly tapering the width of the
structure, a band-pass frequency behavior is obtained. In order to demonstrate the capabilities of the
novel quasi-periodic structure proposed, a band-pass structure with good matching, wide rejected band,
and high-power handling capability has been designed, fabricated, and measured obtaining very good
results., This work was supported by MINECO (Spain) under projects TEC2014-51902-C2-2-R and TEC2014-
55735-C3-R.
proposed. The constituent unit cells of the structure feature a resonant behavior, providing high
attenuation levels in the stopband with a compact (small period) size. By applying a smooth taper-like
variation to the height of the periodic structure, very good matching is achieved in the passband while
the bandwidth of the stopband is strongly increased. Moreover, by smoothly tapering the width of the
structure, a band-pass frequency behavior is obtained. In order to demonstrate the capabilities of the
novel quasi-periodic structure proposed, a band-pass structure with good matching, wide rejected band,
and high-power handling capability has been designed, fabricated, and measured obtaining very good
results., This work was supported by MINECO (Spain) under projects TEC2014-51902-C2-2-R and TEC2014-
55735-C3-R.
Wideband channel modeling for mm-wave inside trains for 5G-related applications
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Moreno García-Loygorri, Juan
- Briso Rodríguez, César
- Arnedo Gil, Israel
- Calvo, César
- Gómez Laso, Miguel Ángel
- He, Danping
- Jiménez, Florentino
- González Posadas, Vicente
Passenger trains and especially metro trains have been identified as one of the key scenarios for 5G deployments. The wireless
channel inside a train car is reported in the frequency range between 26.5GHz and 40GHz. These bands have received a lot of
interest for high-density scenarios with a high-traffic demand, two of the most relevant aspects of a 5G network. In this paper we
provide a full description of the wideband channel estimating Power-Delay Profiles (PDP), Saleh-Valenzuela model parameters,
time-of-arrival (TOA) ranging, and path-loss results.Moreover, the performance of an automatic clustering algorithm is evaluated.
The results show a remarkable degree of coherence and general conclusions are obtained., Enabling 5G TEC2014-55735-C3-2-R is funded by the Spanish
Ministry of Economy and Competitiveness and also is
funded by the Chinese Strategic International Cooperative
Project of National key R&D Plan, 2016YFE0200200.
channel inside a train car is reported in the frequency range between 26.5GHz and 40GHz. These bands have received a lot of
interest for high-density scenarios with a high-traffic demand, two of the most relevant aspects of a 5G network. In this paper we
provide a full description of the wideband channel estimating Power-Delay Profiles (PDP), Saleh-Valenzuela model parameters,
time-of-arrival (TOA) ranging, and path-loss results.Moreover, the performance of an automatic clustering algorithm is evaluated.
The results show a remarkable degree of coherence and general conclusions are obtained., Enabling 5G TEC2014-55735-C3-2-R is funded by the Spanish
Ministry of Economy and Competitiveness and also is
funded by the Chinese Strategic International Cooperative
Project of National key R&D Plan, 2016YFE0200200.
Proyecto: MINECO//TEC2014-55735-C3-3-R
High temporal resolution refractivity retrieval from radar phase measurements
Investigo. Repositorio Institucional de la Universidade de Vigo
- Nocelo López, Rubén
- Santalla del Río, Maria Veronica
Knowledge of the spatial and temporal variability of near-surface water vapor is of great importance to successfully model reliable radio communications systems and forecast atmospheric phenomena such as convective initiation and boundary layer processes. However, most current methods to measure atmospheric moisture variations hardly provide the temporal and spatial resolutions required for detection of such atmospheric processes. Recently, considering the high correlation between refractivity variations and water vapor pressure variations at warm temperatures, and the good temporal and spatial resolution that weather radars provide, the measurement of the refractivity with radar became of interest. Firstly, it was proposed to estimate refractivity variations from radar phase measurements of ground-based stationary targets returns. For that, it was considered that the backscattering from ground targets is stationary and the vertical gradient of the refractivity could be neglected. Initial experiments showed good results over flat terrain when the radar and target heights are similar. However, the need to consider the non-zero vertical gradient of the refractivity over hilly terrain is clear. Up to date, the methods proposed consider previous estimation of the refractivity gradient in order to correct the measured phases before the refractivity estimation. In this paper, joint estimation of the refractivity variations at the radar height and the refractivity vertical gradient variations using scan-to-scan phase measurement variations is proposed. To reduce the noisiness of the estimates, a least squares method is used. Importantly, to apply this algorithm, it is not necessary to modify the radar scanning mode. For the purpose of this study, radar data obtained during the Refractivity Experiment for H2O Research and Collaborative Operational Technology Transfer (REFRACTT_2006), held in northeastern Colorado (USA), are used. The refractivity estimates obtained show a good performance of the algorithm proposed compared to the refractivity derived from two automatic weather stations located close to the radar, demonstrating the possibility of radar based refractivity estimation in hilly terrain and non-homogeneous atmosphere with high spatial resolution., Ministerio de Economía y Competitividad | Ref. TEC2014-55735-C3-3-R, Xunta de Galicia | Ref. GRC2015/019
Proyecto: MINECO//TEC2014-55735-C3-3-R