Recent Submissions

  • Neutral-point-clamped DC-AC power converters 

    Busquets Monge, Sergio (2018-02-22)
    Part of book or chapter of book
    Open Access
    This article reviews the fundamentals of multilevel multiphase neutral-point-clamped DC–AC power converters. These converters are configured with one or more legs and a common DC-link. Each leg is functionally equivalent ...
  • 5GHz CMOS all-pass filter-based true time delay cell 

    Aghazadeh Dafsari, Seyed Rasoul; Martínez García, Herminio; Saberkari, Alireza (Multidisciplinary Digital Publishing Institute (MDPI), 2020)
    Part of book or chapter of book
    Open Access
    Analog CMOS time-delay cells realized by passive components, e.g., lumped LC delay lines, are inefficient in terms of area for multi-GHz frequencies. All-pass filters considered as active circuits can, therefore, be the ...
  • Comparative aspects of control strategies for hybrid DC/DC regulators with variable-switching frequency 

    Martínez García, Herminio; García Vílchez, Encarnación (Cambridge Scholars Publishing, 2020)
    Part of book or chapter of book
    Restricted access - publisher's policy
    Linear-assisted DC/DC regulators (or linear-switching hybrid DC/DC regulators) consist of a linear voltage regulator (classic NPN/nMOS topologies or PNP/pMOS low-dropout structures) connected in parallel with a switching ...
  • Low drop-out voltage regulator as a candidate topology for photovoltaic solar facilities 

    Martínez García, Herminio; García Vílchez, Encarnación (Cambridge Scholars Publishing, 2020)
    Part of book or chapter of book
    Open Access
    This chapter presents a design for a 4.5-V, 450-mA low drop-out (LDO) linear voltage regulator based on a two-stage cascode operational transconductance amplifier (OTA) as an error amplifier for photovoltaic solar DC-DC ...
  • Capacitorless DC/DC regulator as a candidate topology for photovoltaic solar 

    Martínez García, Herminio; García Vílchez, Encarnación (Cambridge Scholars Publishing, 2020)
    Part of book or chapter of book
    Restricted access - publisher's policy
    Linear-assisted DC/DC regulators (or linear-switching hybrid DC/DC regulators) consist of a linear voltage regulator (classic NPN/nMOS topologies or PNP/pMOS low-dropout structures) connected in parallel with a switching ...
  • An energy efficient envelope tracking technique for demanding wireless standards 

    Prakash, Suraj; Martínez García, Herminio; Naderi, Mohammad H.; Lee, Hoi; Silva Martinez, José (2020)
    Part of book or chapter of book
    Restricted access - publisher's policy
    The chapter deals with energy efficient envelope tracking solution in a power amplifier system for demanding wireless standards.
  • Technological layer 

    Rubio Sola, Jose Antonio; Canal Corretger, Ramon (The Institution of Engineering and Technology, 2020-10)
    Part of book or chapter of book
    Restricted access - publisher's policy
    This chapter describes the fundamental characteristics of Complementary Metal-Oxide-Semiconductor (CMOS) technology, and how it can be assessed for system reliability studies. After some definitions, the dominating ...
  • The scaling laws of HyperSurfaces 

    Taghvaee, Hamidreza; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto; Saeed, Taqwa; Pitsillides, Andreas; Tsilipakos, Odysseas; Liaskos, Christos; Tasolamprou, Anna; Kafesaki, Maria; Pitilakis, Alexandros; Kantartzis, Nikolaos V.; Soteriou, Vassos; Lestas, Marios (CRC Press, 2020)
    Part of book or chapter of book
    Restricted access - publisher's policy
    State-of-the-art, flat structures called metasurfaces can filter and steer light and sound, render an object completely invisible to electromagnetic waves, and much more. They can deliver automation, remote operation, and ...
  • Macroporous silicon for gas detection 

    Vega Bru, Didac; Rodríguez Martínez, Ángel (2018-11-14)
    Part of book or chapter of book
    Open Access
    Macroporous silicon (MPS) has been shown to be a promising material in many areas of technical interest. In particular, MPS has been applied for electronic devices and microfluidic applications. One of the most promising ...
  • High–efficiency power amplifiers 

    Velasco Quesada, Guillermo; Martínez García, Herminio; Conesa Roca, Alfons (CRC Press, 2018)
    Part of book or chapter of book
    Restricted access - publisher's policy
    This chapter describes amplifiers or amplification output stages that are capable of delivering high-output power levels. Since power amplifier stages may deliver high output power to low-impedance loads, they are significantly ...
  • Wavelet transform applied to internal defect detection by means of laser ultrasound 

    Mohamed Selim, Hossameldin; Piñal Moctezuma, Juan Fernando; Delgado Prieto, Miquel; Trull Silvestre, José Francisco; Romeral Martínez, José Luis; Cojocaru, Crina (2019-04-03)
    Part of book or chapter of book
    Open Access
    Laser-generated ultrasound represents an interesting nondestructive testing technique that is being investigated in the last years as performative alternative to classical ultrasonic-based approaches. The greatest difficulty ...
  • Sizing Factor Considerations of Grid-Connected Photovoltaics Systems 

    Velasco Quesada, Guillermo; Martínez García, Herminio (Nova Science Publishers, Inc., 2019-09-03)
    Part of book or chapter of book
    Restricted access - publisher's policy
    This chapter deals with the so-called sizing ratio (Rs) of grid-connected photovoltaic (GCPV) systems and the relationship of this parameter with the maximum available power at the output of the PV generator subsystem. ...

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