Search results for: Eduard Alarcon

Items from 1 to 20 out of 133 results

article

Tunable Active Inductor-Based Second-Order All-Pass Filter as a Time Delay Cell for Multi-GHz Operation

Seyed Rasoul Aghazadeh, Herminio Martinez, Alireza Saberkari, Eduard Alarcon

Circuits, Systems, and Signal Processing > 2019 > 38 > 8 > 3644-3660

In this paper, a CMOS wideband second-order voltage-mode all-pass filter as a time delay cell is proposed. The proposed all-pass filter is made up of solely two transistors as active elements and four passive components. This filter demonstrates a group delay of approximately 60 ps within a bandwidth of 5 GHz, achieving maximum delay–bandwidth product. The proposed circuit is highly linear and has...

article

Applying autonomy to distributed satellite systems: Trends, challenges, and future prospects

Carles Araguz, Elisenda Bou‐Balust, Eduard Alarcón

Systems Engineering > 21 > 5 > 401 - 416

While monolithic satellite missions still pose significant advantages in terms of accuracy and operations, novel distributed architectures are promising improved flexibility, responsiveness, and adaptability to structural and functional changes. Large satellite swarms, opportunistic satellite networks or heterogeneous constellations hybridizing small‐spacecraft nodes with high‐performance satellites...

article

Influence of neighboring absorbing receivers upon the inter-symbol interference in a diffusion-based molecular communication system

Simon S. Assaf, Shirin Salehi, Raul G. Cid-Fuentes, Josep Solé-Pareta, more

Nano Communication Networks > 2017 > 14 > C > 40-47

A Diffusion-based Molecular Communication (DMC) system is based on the free diffusion of particles that carry the message between the transmitter and the receivers. One of the main problems which lead to decreased data rates in such network is the Inter Symbol Interference (ISI) caused by the heavy tail of the impulse response. In this paper, we study the influence of neighboring absorbing receivers...

article

Enhanced Intrinsic Voltage Gain in Artificially Stacked Bilayer CVD Graphene Field Effect Transistors

Himadri Pandey, Jorge‐Daniel Aguirre‐Morales, Satender Kataria, Sebastien Fregonese, more

Annalen der Physik > 529 > 11 > n/a - n/a

We report on electronic transport in dual‐gate, artificially stacked bilayer graphene field effect transistors (BiGFETs) fabricated from large‐area chemical vapor deposited (CVD) graphene. The devices show enhanced tendency to current saturation, which leads to reduced minimum output conductance values. This results in improved intrinsic voltage gain of the devices when compared to monolayer graphene...

chapter

A graphene based plasmonic antenna design for communication in the THz regime

Christoph Suessmeier, Stephan Schaeffer, Sergi Abadal, Eduard Alarcon, more

2017 Conference on Lasers and Electro-Optics (CLEO) > 1

2017 Conference on Lasers and Electro-Optics (CLEO)

We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential μ_c and relaxation time τ.

chapter

A PLL control for self-tuning of parallel wireless power transfer receivers utilizing switch-mode gyrator emulated inductors

Mohamed Saad, Herminio Martinez-Garcia, Pedro Alou, Eduard Alarcon

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe) > P.1 - P.10

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)

In multiple receivers wireless power transfer (WPT) systems, it is preferable to retune the resonant frequency of every receiver to the transmitter operating frequency in front of frequency mismatches. This paper discusses a proposal for electronic tuning for WPT receivers by means of a variable active switch-mode inductance. The proposed method benefits from the gyrator concept to emulate a variable...

chapter

Material-Dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures

Christoph Suessmeier, Sergi Abadal, Daniel Stock, Stephan Schaeffer, more

2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) > 1 - 2

2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

Graphene supports surface plasmon polaritons with comparatively slow propagation velocities in the THz region, which becomes increasingly interesting for future communication technologies. This ability can be used to realize compact antennas, which are up to two orders of magnitude smaller than their metallic counterparts. For a proper functionality of these antennas some minimum material requirements...

chapter

Graphene-Based terahertz antennas for area-constrained applications

Sergi Abadal, Seyed Ehsan Hosseininejad, Albert Cabellos-Aparicio, Eduard Alarcon

2017 40th International Conference on Telecommunications and Signal Processing (TSP) > 817 - 820

2017 40th International Conference on Telecommunications and Signal Processing (TSP)

Graphene is enabling a plethora of applications in a wide range of fields due to its unique electrical, mechanical, and optical properties. In the realm of wireless communications, graphene shows great promise for the implementation of miniaturized and tunable antennas in the terahertz band. These unique advantages open the door to disruptive wireless applications in highly integrated scenarios where...

chapter

Machine learning-based network modeling: An artificial neural network model vs a theoretical inspired model

Josep Garner, Albert Mestres, Eduard Alarcon, Albert Cabellos

2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN) > 522 - 524

2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)

Recent trends in networking are proposing the use of Machine Learning (ML) techniques for the control and operation of the network. The application of ML to networking brings several use-cases as well as challenges. In this paper we focus on a rather fundamental problem in networking: estimating the delays of a network. In particular, we aim to assess the performance of models inspired by the existing...

chapter

Extracting a closed-form I–V equation and noise analysis for CNFET in analog/RF applications

Omid Khorgami, Alireza Saberkari, Javad Bagheri, Seyed Mohsen Hosseini-Golgoo, more

2017 15th IEEE International New Circuits and Systems Conference (NEWCAS) > 229 - 232

2017 15th IEEE International New Circuits and Systems Conference (NEWCAS)

This paper aims to extract a closed-form current-voltage (I–V) equation for short channel carbon nanotube field-effect transistors (CNFETs) in saturation region based on the Stanford model and ballistic relation of one channel CNFET. In order to obtain the goal, firstly, the ballistic relation is simplified to a closed-form I–V equation, and then, it is verified by a linear system identification method...

chapter

System-level implementation of output-capacitorless sliding-mode control based-digital LDO regulator

Alireza Saberkari, Javad Bagheri, Omid Khorgami, Reza Shahnazi, more

2017 15th IEEE International New Circuits and Systems Conference (NEWCAS) > 17 - 20

2017 15th IEEE International New Circuits and Systems Conference (NEWCAS)

Digital low-dropout regulators (DLDOs) draw great attention because of their low voltage operation and process scalability. Several works done to improve the stability and transient performance of DLDOs are based on using a clock-based comparator as an error amplifier. This paper aims to propose the use of sliding-mode control (SMC), as the controller of DLDO instead of the conventional clock-based...

article

Study of hybrid and pure plasmonic terahertz antennas based on graphene guided-wave structures

Seyed Ehsan Hosseininejad, Eduard Alarcón, Nader Komjani, Sergi Abadal, more

Nano Communication Networks > 2017 > 12 > C > 34-42

Graphene is a unique material for the implementation of terahertz antennas due to extraordinary properties of the resulting devices, such as tunability and compactness. Existing graphene antennas are based on pure plasmonic structures, which are compact but show moderate to high losses. To achieve higher efficiency with low cost, one can apply the theory behind dielectric resonator antennas widely...

chapter

Switch-mode gyrator-based emulated inductor enabling self-tunability in WPT receivers

Mohamed Saad, Elisenda Bou-Balust, Eduard Alarcon

2017 IEEE International Symposium on Circuits and Systems (ISCAS) > 1 - 4

2017 IEEE International Symposium on Circuits and Systems (ISCAS)

Magnetic resonance wireless power transfer (WPT) is a very promising technology for a wide range of applications. The transmission range and efficiency of wireless power transfer have been reasonably enhanced by resonating transmitter and receiver coil at a common frequency. The transmitter and receiver sides have to be perfectly tuned, otherwise power transfer capability is greatly reduced. This...

chapter

Low power output-capacitorless class-AB CMOS LDO regulator

Vahideh Shirmohammadli, Alireza Saberkari, Herminio Martinez-Garcia, Eduard Alarcon-Cot

2017 IEEE International Symposium on Circuits and Systems (ISCAS) > 1 - 4

2017 IEEE International Symposium on Circuits and Systems (ISCAS)

This paper presents an output-capacitorless class-AB low-dropout (LDO) regulator with load current sinking and sourcing ability. The proposed LDO consists of two complementary pass transistors, controlled using a level shifter technique. The transient improvement section applied to the gates of the pass devices enhances the transient performance of the LDO. The proposed LDO is designed in TSMC 0.18...

article

Steady-State Analysis of Isolated Class-E$^2$ Converter Outside Nominal Operation

Tomoharu Nagashima, Xiuqin Wei, Elisenda Bou, Eduard Alarcon, more

IEEE Transactions on Industrial Electronics > 2017 > 64 > 4 > 3227 - 3238

This paper presents a steady-state analysis of the isolated class-E

$^2$

converter outside nominal operation. By transforming the isolated class-E

$^2$

converter into the typical topology of the class-E inverter, the switching patterns can be comprehended on the parameter spaces easily. The output power and the power-conversion efficiency can be expressed as functions of circuit parameters such as...

article

Releasing rate optimization in a single and multiple transmitter local drug delivery system with limited resources

Shirin Salehi, Naghmeh S. Moayedian, Simon S. Assaf, Raul G. Cid-Fuentes, more

Nano Communication Networks > 2017 > 11 > C > 114-122

Drug delivery is one of the most important applications of molecular communication. Drug transmitters have limited resources in terms of energy and reservoir and these limitations should be taken into consideration when designing a drug delivery system. Drug molecules may also be expensive and releasing a large amount of them can have harmful effects on the healthy parts of the body. In this paper,...

article

Computing and Communications for the Software-Defined Metamaterial Paradigm: A Context Analysis

Sergi Abadal, Christos Liaskos, Ageliki Tsioliaridou, Sotiris Ioannidis, more

IEEE Access > 2017 > 5 > 6225 - 6235

Metamaterials are artificial structures that have recently enabled the realization of novel electromagnetic components with engineered and even unnatural functionalities. Existing metamaterials are specifically designed for a single application working under preset conditions (e.g., electromagnetic cloaking for a fixed angle of incidence) and cannot be reused. Software-defined metamaterials (SDMs)...

article

On the Scalability of Energy in Wireless RF Powered Internet of Things

Raul G. Cid-Fuentes, M. Yousof Naderi, Kaushik R. Chowdhury, Albert Cabellos-Aparicio, more

IEEE Communications Letters > 2016 > 20 > 12 > 2554 - 2557

Wireless RF power transfer requires the deployment of multiple energy transmitters (ETs) to cover an entire area of interest. This letter aims at bounding the minimum cumulative power that ETs need to inject into the network, such that the recipient nodes harvest sufficient power to operate. The main findings are that, in the worst case, this scales as

$O(s^{1-\alpha /2})$

, where

$s$

and

$\alpha $

...

article

Guest Editorial

Alyssa B. Apsel, Chai Wah Wu, Eduard Alarcon

IEEE Transactions on Circuits and Systems II: Express Briefs > 2016 > 63 > 12 > 1089 - 1090

The issue that you are holding represents a milestone for a new initiative called “Late Breaking News” (LBN). This is the inaugural Special Issue of IEEE Transaction on Circuits and Systems II (TCAS II), presenting the best work submitted to the LBN track of International Symposium on Circuits and Systems (ISCAS) 2016. The purpose of the LBN initiative is to recognize the quickly changing nature of...

chapter

LDO-assisted vs. linear-assisted DC/DC converters: A comprehensive study and comparison

Vahideh Shirmohammadli, Alireza Saberkari, Herminio Martinez-Garcia, Eduard Alarcon-Cot

2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS) > 105 - 108

2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS)

This paper deals with a comprehensive study and comparison on the conventional linear-assisted converter and a new structure named, LDO-assisted converter based on a new class-AB LDO regulator instead of the conventional linear one, in terms of efficiency, output ripple, and load transient response. The new structure reduces difference between input and output voltages and also switching frequency...

Publication date

Set your own date range

Content availability

Available (131)
None (2)

Publication type

book (77)
article (56)

Keywords

SWITCHES (21)
WIRELESS COMMUNICATION (20)
GRAPHENE (13)
COUPLINGS (11)
REGULATORS (11)
CAPACITORS (10)
RECEIVERS (10)
INTEGRATED CIRCUIT MODELING (9)
NANONETWORKS (9)
SCALABILITY (9)
TRANSIENT ANALYSIS (9)
TRANSISTORS (9)
VOLTAGE CONTROL (9)
MATHEMATICAL MODEL (8)
NETWORK-ON-CHIP (8)
CAPACITANCE (7)
INVERTERS (7)
TRANSMITTERS (7)
WIRELESS SENSOR NETWORKS (7)
IMPEDANCE (6)
INDUCTORS (6)
LOGIC GATES (6)
MOLECULAR COMMUNICATION (6)
RADIO FREQUENCY (6)
RESONANT FREQUENCY (6)
SWITCHING FREQUENCY (6)
TRANSIENT RESPONSE (6)
ANALYTICAL MODELS (5)
BROADCAST (5)
COILS (5)
ENERGY HARVESTING (5)
INDUCTANCE (5)
LOW-DROPOUT REGULATOR (5)
WIRELESS POWER TRANSFER (5)
ANTENNAS (4)
BANDWIDTH (4)
BUCK CONVERTER (4)
CHEMICALS (4)
COMPUTATIONAL MODELING (4)
EFFICIENCY (4)
MULTICAST (4)
OUTPUT RIPPLE (4)
PLASMONS (4)
QUANTIZATION (4)
SYSTEM-ON-CHIP (4)
TOPOLOGY (4)
ZERO VOLTAGE SWITCHING (4)
ACTIVE INDUCTOR (3)
CIRCUIT STABILITY (3)
CLASS-E ZVS/ZDS CONDITIONS (3)
CLOCKS (3)
CMOS INTEGRATED CIRCUITS (3)
COMPUTER ARCHITECTURE (3)
CONDUCTIVITY (3)
DIFFUSION (3)
DIFFUSION-BASED MOLECULAR COMMUNICATION (3)
DIGITAL CONTROL (3)
DIPOLE ANTENNAS (3)
EQUATIONS (3)
GYRATOR (3)
GYRATORS (3)
LDO-ASSISTED (3)
LOAD MODELING (3)
LOW-DROPOUT (3)
MAGNETIC RESONANCE (3)
MANYCORE PROCESSORS (3)
MODULATION (3)
NANOBIOSCIENCE (3)
ON-CHIP TRAFFIC ANALYSIS (3)
RESISTANCE (3)
RLC CIRCUITS (3)
SENSORS (3)
STEADY-STATE (3)
SWITCH-MODE (3)
TRAJECTORY (3)
ABSORPTION (2)
AMPLIFICATION (2)
AREA (2)
BIFURCATION (2)
BIO-INSPIRED (2)
BRIDGE CIRCUITS (2)
CIRCUIT SYNTHESIS (2)
CLASS-E INVERTER (2)
CLASS-E² DC-DC CONVERTER (2)
CMOS TECHNOLOGY (2)
CONTEXT (2)
DC-DC POWER CONVERTERS (2)
DELAY (2)
DESIGN SPACE EXPLORATION (2)
DNA PACKET (2)
ENCODING (2)
ERROR AMPLIFIER (2)
FAST TRANSIENT (2)
FAST TRANSIENT RESPONSE (2)
FINITE ELEMENT ANALYSIS (2)
GRAPHENE ANTENNAS (2)
GRAPHENE-BASED ANTENNAS (2)
GRAPHENE-ENABLED WIRELESS COMMUNICATIONS (2)
GRAPHENNAS (2)
HIGH OVERALL EFFICIENCY (2)
more

Data set

ieee (87)
Springer (25)
Elsevier (15)
Wiley (6)

INFONA - science communication portal

Search results for: Eduard Alarcon

Tunable Active Inductor-Based Second-Order All-Pass Filter as a Time Delay Cell for Multi-GHz Operation

Applying autonomy to distributed satellite systems: Trends, challenges, and future prospects

Influence of neighboring absorbing receivers upon the inter-symbol interference in a diffusion-based molecular communication system

Enhanced Intrinsic Voltage Gain in Artificially Stacked Bilayer CVD Graphene Field Effect Transistors

A graphene based plasmonic antenna design for communication in the THz regime

A PLL control for self-tuning of parallel wireless power transfer receivers utilizing switch-mode gyrator emulated inductors

Material-Dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures

Graphene-Based terahertz antennas for area-constrained applications

Machine learning-based network modeling: An artificial neural network model vs a theoretical inspired model

Extracting a closed-form I–V equation and noise analysis for CNFET in analog/RF applications

System-level implementation of output-capacitorless sliding-mode control based-digital LDO regulator

Study of hybrid and pure plasmonic terahertz antennas based on graphene guided-wave structures

Switch-mode gyrator-based emulated inductor enabling self-tunability in WPT receivers

Low power output-capacitorless class-AB CMOS LDO regulator

Steady-State Analysis of Isolated Class-E$^2$ Converter Outside Nominal Operation

Releasing rate optimization in a single and multiple transmitter local drug delivery system with limited resources

Computing and Communications for the Software-Defined Metamaterial Paradigm: A Context Analysis

On the Scalability of Energy in Wireless RF Powered Internet of Things

Guest Editorial

LDO-assisted vs. linear-assisted DC/DC converters: A comprehensive study and comparison

Filter options

Publication date

Content availability

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Eduard Alarcon

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options