Browsing by Subject "Circuits de microones"

Now showing items 1-20 of 64

    • A multistate single-connection calibration for microwave microfluidics 

      Orloff, Nathan D.; Ma, Xiao; Little, Charles A. E.; Mateu Mateu, Jordi (IEEE Microwave Theory and Techniques Society, 2018-02)
      Article
      Open Access
      With emerging medical, chemical, and biological applications of microwave-microfluidic devices, many researchers desire a fast and accurate calibration that can be achieved in a single connection. However, traditional ...

    • A translinear, log-domain FPAA on standard CMOS technology 

      Fernández, Daniel; Martínez Alvarado, Luis Arturo; Madrenas Boadas, Jordi (2012-02)
      Article
      Restricted access - publisher's policy
      A field-programmable analog array (FPAA) using a standard-CMOS wide-dynamic-range translinear element (TE) is introduced. The FPAA configurable analog blocks (CABs) are based on a reconfigurable translinear cell (RTC), ...

    • Amplificador Wi-fi 

      Fernandez Ducable, Didac (Universitat Politècnica de Catalunya, 2008-02)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Este trabajo explica detalladamente el proceso de fabricación de un circuito de Microondas, es decir; que opera a altas frecuencias. En él, se ha detallado específicamente todos los pasos que se deben dar para que dicho ...

    • Análisis de geometrías fractales para resonadores microstrip 

      Extremera Extremera, Manuel Jesus (Universitat Politècnica de Catalunya, 2016-02-25)
      Master thesis (pre-Bologna period)
      Open Access
      Usage and popularity growth of communications satellites has increased the interest on filter synthesis research. Nowadays, the improvement of the trade-off between size, weight, cost and performance is the golden rule. ...

    • Automatización y control de un motor a pasos para la sintonización de filtros de microondas 

      Benet Freissinier, Josep (Universitat Politècnica de Catalunya, 2010-12-15)
      Master thesis (pre-Bologna period)
      Open Access
      Català: L'objectiu del projecte és ajustar de forma automàtica la freqüència central de un ressonador de microones a la freqüència que desitgi l'usuari. Per aconseguir-ho, s'introdueix la freqüència desitjada al software ...

    • Caracterización de estructuras finline en banda K mediante la técnica de calibración TRL 

      Martorell, J. M.; Pradell i Cara, Lluís (1990)
      Conference report
      Open Access

    • Circuit model for a coplanar-slotline cross 

      Ribó i Pal, Miquel; Pradell i Cara, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-12-31)
      Article
      Open Access
      A new 6-port “circuit-model” for coplanar-slotline crosses is presented. The model is based on the separation of the two fundamental Coplanar Waveguide (CPW) modes (even and odd) into different ports. It generalizes previous ...

    • Circuit model for coplanar-slotline tees 

      Ribó i Pal, Miquel; Pradell i Cara, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-05-31)
      Article
      Open Access
      Coplanar-slotline tees have been used in a number of microwave circuits, although no complete models were available to explain their behavior. In this letter, a new “circuit-model” for a coplanar-slotline tee is presented. ...

    • Circuit Model for mode conversion in coplanar waveguide assymmetric shunt impedances 

      Ribó i Pal, Miquel; Pradell i Cara, Lluís (IEE-INST ELEC ENG, 1999-04-30)
      Article
      Open Access
      A new `circuit model' for the conversion between even and odd modes in coplanar waveguide asymmetric shunt impedances is presented. The model is based on the separation of modes into two input and two output ports. In ...

    • Circuit model for mode conversion in coplanar waveguide asymmetric series-impedances 

      Ribó i Pal, Miquel; Cruz Llopis, Luis Javier de la; Pradell i Cara, Lluís (IEE-INST ELEC ENG, 1999-10-31)
      Article
      Open Access
      A new `circuit model' for converting between even and odd modes in asymmetric series impedances in the ground plane of a coplanar waveguide is presented. The model is based on the separation of modes into two input and two ...

    • Circuitos de microondas con líneas de transmisión 

      Bará Temes, Francisco Javier (Edicions UPC, 1994)
      Book
      Open Access
      El libro propone una introducción a las microondas sin recurrir al análisis electromagnético. Comienza por las líneas de transmisión, la carta de Smith y sus aplicaciones, y continua por la descripción de los circuitos de ...

    • Circuits de microones amb línies de transmissió 

      Bará Temes, Francisco Javier (Edicions UPC, 1993)
      Book
      Open Access
      El llibre proposa una introducció a les microones sense recórrer a l'anàlisi electromagnètica. Comença per les línies de transmissió, la carta de Smith i les seves aplicacions, i continua per la descripció de circuits de ...

    • Combining SMOS with visible and near/shortwave/thermal infrared satellite data for high resolution soil moisture estimates 

      Sanchez Ruiz, Sergio; Piles Guillem, Maria; Sanchez, Nilda; Martinez Fernandez, Jose; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José (Elsevier, 2014-08-04)
      Article
      Restricted access - publisher's policy
      Sensors in the range of visible and near-shortwave-thermal infrared regions can be used in combination with passive microwave observations to provide soil moisture maps at much higher spatial resolution than the original ...

    • Conmutador de microondas con transistor MESFET encapsulado 

      Comerón Tejero, Adolfo; Elias Fusté, Antoni (1985)
      Conference report
      Open Access
      A packaged GaAs MESFET has been used to implement a fast switch at frequencies around 12 GHz. The insertion loss in the ON state is approximately 2 dB between 9 and 13 GHz. In the OFF state the insertion loss can be higher ...

    • Contribucions a instruments per a reflectometria de senyals de posicionament global 

      Onrubia Ibáñez, Raúl (Universitat Politècnica de Catalunya, 2014-12)
      Master thesis
      Restricted access - publisher's policy
      [ANGLÈS] The thesis presents 4 papers written about the contributions made to two different instruments being developed at RSLab, mainly at hardware level. The first instrument is a dual-band (L1 and L5) conventional and ...

    • Desenvolupament de BALUNS multimodals basats en tes coplanars 

      Queralt Jarne, Martí (Universitat Politècnica de Catalunya, 2016)
      Master thesis (pre-Bologna period)
      Open Access

    • Desenvolupament i estudi comparatiu d'oscil·ladors locals per a un radiòmetre en banda L 

      Castro Ríos, Eva (Universitat Politècnica de Catalunya, 2016-09)
      Master thesis (pre-Bologna period)
      Open Access
      This thesis has been developed in the frame of the ESA scientific mission SMOS. Its purpose is to retrieve data about the soil moisture and ocean salinity in order to track extreme meteorological phenomena and to improve ...

    • Design and fabrication of coplanar YBCO structures on lithium niobate substrates 

      Rozan, Edouard; Collado Gómez, Juan Carlos; García, A.; O'Callaghan Castellà, Juan Manuel; Pous Andrés, Rafael; Fàbrega i Soler, Lluís; Rius Casals, Juan Manuel; Rubí, R.; Fontcuberta, Josep; Harackiewicz, F. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-06-30)
      Article
      Open Access
      YBa2Cu3O7-δ (YBCO) with low RF losses has been successfully deposited onto lithium niobate (LNO) to improve the performance of electrooptic Mach-Zender modulators. Epitaxial, c-axis oriented superconducting YBCO thin films ...

    • Design and testing of microwave circuits for optimized radio over fiber data transmission 

      Ucar, Yilmaz (Universitat Politècnica de Catalunya, 2021-02)
      Master thesis
      Open Access
      Inevitable increase in number of wireless communication users led to search for solutions to provide higher bandwidth requirement. Most famous candidate is Radio-over-Fiber systems to fulfil bandwidth necessity even though ...

    • Design of a Chipless Harmonic Radar Temperature Sensor 

      Romeu Gómez, Jordi (Universitat Politècnica de Catalunya / Technische Universität Darmstadt, 2013-09-10)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Technische Universität Darmstadt
      [ANGLÈS] Passive chipless wireless sensor tags are used in environments with specific conditions where chips, wires or power supplies cannot be used. Nowadays a huge part of these sensors use Surface Acoustic Wave (SAW) ...