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Listar por autor "Moscoso Mártir, Álvaro"
Mostrando ítems 1-7 de 7
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Butler Matrix Based Six-port Passive Junction
Moscoso Mártir, Álvaro; Ávila Ruiz, Juan Manuel; Durán Valdeiglesias, Elena; Moreno-Pozas, Laureano
; Molina-Fernández, Íñigo; Ortega-Moñux, Alejandro; De-Oliva-Rubio, José[et al.] (2014-02-03)
In this work we propose the utilization of the Butler matrix as a six-port I/Q demodulator. The inherent symmetry of its topology allows to overcome the intrinsic amplitude and phase imbalances of the traditional approaches ... -
Circuitos de Radiofrecuencia de Banda Ultra-Ancha en Tecnología Planar Integrada: Aplicación a Receptores de Seis Puertos
(Servicio de Publicaciones de l Universidad de Málaga, Servicio de Publicaciones, 2013)Se presenta el diseño, implementación y evaluación experimental de un demodulador I/Q de seis puertos analógico de altas prestaciones, capaz de operar en la banda de 3.1 a 10.6 GHz sin necesidad de técnicas de calibración. ... -
Discriminador de frecuencia basado en resonadores “dual-mode” sintonizables
In this paper a novel varactor-tuned frequency discriminator that makes use of two tunable dual-mode microstrip resonators is demonstrated. In this circuit, the two tuned modes of the resonators are used independently to ... -
Frequency locked loop architecture for phase noise reduction in wideband low-noise microwave oscillators.
Ávila Ruiz, Juan Manuel; Moreno-Pozas, Laureano; Durán Valdeiglesias, Elena; Moscoso Mártir, Álvaro; Molina-Fernández, Íñigo; De-Oliva-Rubio, José[et al.] (Wiley, 2013)
A frequency locked loop (FLL) for phase noise reduction of wideband voltage controlled oscillators is proposed. The key building block of the system is a low noise (−160 dBV/Hz) and high sensitivity (22 V/GHz) delay line ... -
Six-Port-Based Architecture for Phase NoiseMeasurement in the UWB Band
Ávila Ruiz, Juan Manuel; Moscoso Mártir, Álvaro; Durán Valdeiglesias, Elena; Moreno-Pozas, Laureano; De-Oliva-Rubio, José; Molina-Fernández, Íñigo[et al.] (Hindawi Publishing Corporation, 2014-06)
A six-port-based frequency discriminator for phase noise measurement is proposed. This circuit makes use of a delay line discriminator configuration, thus not requiring reference oscillator. Furthermore, the use of a ... -
Ultra-Wideband VCO Phase-Noise Reduction Loop Based on a Six-Port Phase-Shifterless Delay-Line Discriminator.
Ávila Ruiz, Juan Manuel; Molina-Fernández, Íñigo; Moreno-Pozas, Laureano; Moscoso Mártir, Álvaro (IEEE Transactions on Microwave Theory and Techniques, 2014-11-14)
In this paper, a novel frequency-locked loop (FLL) architecture for phase-noise reduction of wideband voltage-controlled oscillators (VCO) is presented. The circuit makes use of a phase-shifterless frequency discriminator, ... -
Varactor-Tuned Dual-Mode Frequency Discriminator for Instantaneous Frequency Measurements
Moscoso Mártir, Álvaro; Molina-Fernández, Íñigo; Hong, Jiasheng (IEEE European Microwave Week, 2013)
In this paper a novel varactor-tuned frequency discriminator that makes use of two tunable dual-mode microstrip resonators is demonstrated which doubles the discriminator tuning bandwidth. To prove its validity a prototype ...