Browsing by Author "Giacomozzi, Flavio"

Now showing items 1-17 of 17

    • A highly-repeatable, broadband 180º phase switch for integrated MEMS processes 

      Llamas Morote, Marco Antonio; Girbau Sala, David; Ribó, M.; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, S.; Coccetti, Favio; Aouba, Stephane (2011)
      Conference report
      Restricted access - publisher's policy
      A broadband 0º/180º phase switch based on a slotline-coplanar-waveguide cross loaded with two MEMS switches in opposed (ON/OFF or OFF/ON) states, is reported. The fabrication was made on high-resistivity silicon substrates ...

    • A RF-MEMS switchable CPW air-bridge 

      Contreras, Adrián; Casals Terré, Jasmina; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, Sabrina; Iannacci, Jacopo; Ribó, Miquel (2012)
      Conference lecture
      Open Access
      This work presents a new shunt-type ohmic contact RF-MEMS switch specifically designed as a switchable CPW air bridge. The switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective ...

    • Analytical energy model for the dynamic behavior of RF MEMS switches under increased actuation voltage 

      Casals Terré, Jasmina; Llamas, Marco Antonio; Girbau Sala, David; Pradell i Cara, Lluís; Lázaro Guillén, Antonio; Giacomozzi, Flavio; Colpo, Sabrina (2014-12-01)
      Article
      Restricted access - publisher's policy
      In this paper, the dynamic behavior of electrostatically actuated radio frequency-microelectromechanical system (RF-MEMS) switches is analyzed using energy considerations. An analytical model for bridge-type RF-MEMS switches ...

    • Capacitive and resistive RF-MEMS switches 2.5D & 3D Electromagnetic and Circuit modelling 

      Giacomozzi, Flavio; Colpo, S.; Plana, Robert; Llamas Morote, Marco Antonio; Girbau Sala, David; Pausas, Esther; Pradell i Cara, Lluís; Aouba, Stephane; Villneuve, C.; Puyal, Vincent; Pons, Patrick (2009)
      Conference report
      Open Access
      this paper proposes different strategies for the electrical modelling of capacitive and resistive RF-MEMS switches which take into account the dependence of the electrical performance on the mechanical properties and ...

    • Characterization of dynamics in RF-MEMS switches 

      Llamas Morote, Marco Antonio; Girbau Sala, David; Pradell i Cara, Lluís; Lázaro Guillén, Antoni; Giacomozzi, Flavio; Colpo, S (2009)
      Conference report
      Open Access
      This paper proposes a new method to measure dynamics and power handling of RF microelectromechanical systems (MEMS) devices based on a mobile membrane. The method uses in-phase/quadrature demodulation of an RF signal ...

    • Conmutadores RF-MEMS de baja tensión 

      Contreras Lizarraga, Adrián Arturo; Casals Terré, Jasmina; Pradell i Cara, Lluís; Colpo, Sabrina; Iannacci, Jacopo; Ribó, Miquel; Giacomozzi, Flavio (2012)
      Conference report
      Open Access
      This work shows experimental results of capacitive and ohmic RF-MEMS switches with low actuation voltage. The isolation of capacitive switches is better than 20 dB from 15 GHz and up to 80 GHz according to simulations. ...

    • Enhanced robustness of a bridge-type Rf-Mems switch for enabling applications in 5G and 6G communicationsr 

      Casals Terré, Jasmina; Pradell i Cara, Lluís; Heredia, Julio; Giacomozzi, Flavio; Iannacci, Jacopo; Contreras Lizárraga, Adrián; Ribó Pal, Miquel (2022-11-01)
      Article
      Open Access
      In this paper, new suspended-membrane double-ohmic-contact RF-MEMS switch configurations are proposed. Double-diagonal (DDG) beam suspensions, with either two or three anchoring points, are designed and optimized to minimize ...

    • Filtro paso-banda con control preciso de frecuencia central y ancho de banda usando interruptores RF MEMS 

      Brito Brito, Zabdiel; Llamas Garro, Ignacio; Perruisseau Carrier, Julien; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, Sabrina (2012)
      Conference report
      Restricted access - publisher's policy
      In this paper a reconfigurable bandpass filter is presented. The filter is able to switch between two different states with a center frequency tunable range of 24 % in C band. Center frequency and bandwidth are precisely ...

    • Frequency and bandwidth control of switchable microstrip bandpass filters using RF-MEMS ohmic switches 

      Brito Brito, Zabdiel; Llamas, Ignacio; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, Sabrina (2013)
      Conference report
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      In this paper a reconfigurable bandpass filter is designed using ohmic-contact cantilever-type Micro Electro Mechanical Systems (MEMS) switches., Tthe filter can switch between two different states with a center frequency ...

    • K-band RF-MEMS uniplanar reconfigurable-bandwidth bandpass filter using multimodal immittance inverters 

      Contreras Lizarraga, Adrián Arturo; Ribó i Pal, Miquel; Pradell i Cara, Lluís; Casals Terré, Jasmina; Giacomozzi, Flavio; Iannacci, Jacopo (Institution of Electrical Engineers, 2013-05-23)
      Article
      Restricted access - publisher's policy
      A K-band RF-MEMS uniplanar second-order bandpass filter with reconfigurable bandwidth is presented. The filter is based on inductively-coupled half-wavelength slotline resonators and CPW-slotline multimodal immittance ...

    • Low voltage capacitive and Ohmic RF-MEMS Switches 

      Contreras Lizarraga, Adrián Arturo; Casals Terré, Jasmina; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, Sabrina; Iannacci, Jacopo; Ribó, Miquel (2012)
      Conference report
      Restricted access - publisher's policy
      This work presents experimental results of capacitive and ohmic-contact RF-MEMS switches. The suspension has been designed to compensate stress-gradient effects, and to obtain low pull-in voltages. The measured actuation ...

    • Reconfigurable multimodal bandpass filter based on RF-MEMS switchable CPW air-bridges 

      Contreras Bleda, Adrián; Casals Terré, Jasmina; Pradell i Cara, Lluís; Giacomozzi, Flavio; Iannacci, Jacopo; Ribó i Pal, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, a uniplanar RF-MEMS secondorder bandpass filter with reconfigurable centre frequency is presented. It is based on quarter-wavelength slotline resonators and CPW-slotline multimodal immittance inverters (MIIs), ...

    • Reconfigurable uniplanar bandpass filter based on RF-MEMS switched capacitors 

      Contreras, Adrián; Pradell i Cara, Lluís; Casals Terré, Jasmina; Giacomozzi, Flavio; Iannacci, Jacopo; Ribó, Miquel (2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, an uniplanar RF-MEMS second-order bandpass filter with reconfigurable centre frequency is presented. It is based on half-wavelength slotline resonators, which are loaded using RF-MEMS switches connected ...

    • RF-MEMS switches designed for high-performance uniplanar microwave and mm-wave circuits 

      Pradell i Cara, Lluís; Girbau Sala, David; Ribó Pal, Miquel; Casals Terré, Jasmina; Lázaro Guillén, Antonio; Contreras Lizárraga, Adrián; Llamas Morote, Marco Antonio; Heredia Vega, Julio César; Giacomozzi, Flavio; Margesin, Benno (IntechOpen, 2018-07-18)
      Part of book or chapter of book
      Open Access
      Radio frequency microelectromechanical system (RF-MEMS) switches have demonstrated superior electrical performance (lower loss and higher isolation) compared to semiconductor-based devices to implement reconigurable microwave ...

    • RF-MEMS switches for a full control of the propagating modes in uniplanar microwave circuits and their application to reconfigurable multimodal microwave filters 

      Contreras Lizarraga, Adrián Arturo; Casals Terré, Jasmina; Pradell i Cara, Lluís; Ribó i Pal, Miquel; Heredia Vega, Julio César; Giacomozzi, Flavio; Margesin, Benno (2017-03-29)
      Article
      Open Access
      In this paper, new RF-MEMS switch configurations are proposed to enable control of the propagating (even and odd) modes in multimodal CPW transmission structures. Specifically, a switchable air bridge (a switchable ...

    • RF-MEMS uniplanar 180° phase switch based on a multimodal air-bridged CPW cross 

      Llamas Morote, Marco Antonio; Girbau Sala, David; Ribó, M.; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, S (2011-07)
      Article
      Restricted access - publisher's policy
      In this paper, a new compact broadband uniplanar 180 phase switch, based on an air-bridged coplanar-waveguide (CPW) cross loaded with two capacitive-contact microelectromechancial systems (MEMS) switches in opposed (ON/OFF) ...

    • RF-MEMS uniplanar 180º Phase Switch based on switching between two out-of-phase paths 

      Llamas Morote, Marco Antonio; Pradell i Cara, Lluís; Girbau Sala, David; Ribó, Miquel; Lázaro Villa, José Antonio; Giacomozzi, Flavio; Margesin, Benno (2011)
      Article
      Restricted access - publisher's policy
      A phase switch based on switching between two twoport passive networks with a phase difference of 180º is reported. Two RF MEMS single-pole-double-throw structures are used to select the phase path. The fabrication is ...