Search Results - "La Valle, Ramon Lopez"

Dual-Antenna Dual-Band High Performance Cubesat-Compatible GPS Receiver by Rodriguez, Santiago, Garcia, Javier G., Scillone, German, Diaz, Juan G., Lopez, Ernesto M., Lopez La Valle, Ramon

“…Nanosatellites are revolutionizing the space industry allowing low-cost educational, scientific or commercial space missions. Among them, the CubeSats play a…”
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Simple and Effective GNSS Spatial Processing Using a Low-Cost Compact Antenna Array by Marranghelli, Ezequiel A., La Valle, Ramon Lopez, Roncagliolo, Pedro A.

“…A compact planar four-element antenna array that can be used to improve the robustness and accuracy in applications of satellite-based navigation systems that…”
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Low-Cost Satellite-Based Correction Service for Precise Point Positioning in Latin America by Lopez La Valle, Ramon, Lopez, Ernesto, Garcia, Javier

“…Global Navigation Satellite Systems (GNSS) applications have been continuously expanding during the last years. When centimeter-level accuracy is required, the…”
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A Dual-Band RF Front-End Architecture for Accurate and Reliable GPS Receivers by La Valle, Ramon Lopez, Garcia, Javier G., Roncagliolo, Pedro A.

“…This paper presents a dual-band RF front-end architecture designed for simultaneously receiving the L1 and L5 signals of the Global Positioning System (GPS)…”
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Analysis and compensation of the effect of the enclosure in a multichannel RF front-end by Valle, Ramon Lopez La, Garcia, Javier G., Roncagliolo, Pedro A.

“…The aim of this work is to analyze the resonant frequencies of the enclosure of a multichannel RF front-end intended for receiving the GPS signals. The…”
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Antenna Coupling and Out of Band Interference Effects on a High Precision GNSS Receiver by La Valle, Ramon Lopez, Garcia, Javier G., Roncagliolo, Pedro A.

“…In this work we analyze the coupling between two patch antennas designed to be placed on a vehicle. One antenna transmits high power signals, while the other…”
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A Novel Microwave Modulator Based on Complex Impedance Loads by Venere, Alejandro, La Valle, Ramon Lopez, Hurtado, Martin

“…A compact circuit architecture for a direct-carrier modulator is proposed. It consists of a quadrature hybrid coupler connected to two variable loads capable…”
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Design of a dual-antenna and dual-band GPS receiver for CubeSats by Rodriguez, Santiago, Lopez La Valle, Ramon, Puga, Gerardo L., Garcia, Javier G., Roncagliolo, Pedro A.

“…During the last few years, there has been a rise in the use of nanosatellites because they offer a low cost and short development time alternative to larger…”
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Dual-band bandpass filter with wide stopband and low insertion loss for GNSS signals by Lopez La Valle, Ramon, Garcia, Javier G., Roncagliolo, Pedro A.

“…We present the design of a dual-band bandpass filter for GNSS signals based on microstrip open-loop resonators. The filter has two frequency bands intended for…”
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Orthonormal method for compact Global Navigation Satellite Systems antenna array designs by Marranghelli, Ezequiel A., López La Valle, Gerardo Ramón, Roncagliolo, Pedro A.

“…Compact antenna arrays require special considerations at design time not to degrade its efficiency and also the spatial diversity becomes reduced in terms of…”
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Compact Filtering Power Divider with Low Insertion Loss for GNSS Signals by La Valle, Ramon Lopez

“…This paper presents the design of a two-way filtering power divider for Global Navigation Satellite Systems (GNSS) receivers. The implemented device has a…”
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Dual-Antenna Dual-Band High Performance Cubesat-Compatible GPS Receiver by Rodriguez, Santiago, Garcia, Javier G., Scillone, German, Diaz, Juan G., Lopez, Ernesto M., Lopez La Valle, Ramon

“…Nanosatellites are revolutionizing the space industry allowing low-cost educational, scientific or commercial space missions. Among them, the CubeSats play a…”
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A practical RF front-end for high performance GNSS receivers by La Valle, R. L., Garcia, J. G., Roncagliolo, P. A., Muravchik, C. H.

“…We present the design and implementation of a GNSS front-end intended for receiving the L1/E1 band of GPS/Galileo and GLONASS signals. The proposed scheme…”
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A Simple Microwave Power Combining Amplifier with Enhanced Linearity and High Out-of-Band Rejection by Nunez, Francisco, La Valle, Ramon Lopez, Lombardozzo, Simon

“…We present the design and implementation of a power combining amplifier that has a bandpass response, providing high rejection to spurious frequencies and…”
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Space-Frequency Orthonormal Compensation Method for GNSS Compact Antenna Array Designs by Marranghelli, Ezequiel A., Lopez La Valle, Ramon, Roncagliolo, Pedro A.

“…In the global navigation satellites systems, the trav-eling time determination of the travelling signals is the main task of the receivers. For precise…”
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An Experimental L1/L2 GNSS Receiver for High Precision Applications by Lopez La Valle, Ramon, Garcia, J. G., Roncagliolo, P. A., Muravchik, C. H.

“…In this work we present the design and implementation of a GNSS receiver that can work with the civil signals of the L1 and L2 bands of GPS and GLONASS, and…”
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A Spatial Signal Processing Review for Practical GNSS Antenna Arrays by Marranghelli, Ezequiel A., Ramon Lopez La Valle, G., Roncagliolo, Pedro A.

“…The performance of an isolated antenna compared with itself but embedded (in-situ) in an array is not the same mostly due to the influence of mutual coupling…”
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New Design of a Variable Impedance Based on Polarized Diodes at Microwave Frequency by Venere, Alejandro J., Hurtado, Martin, Lopez La Valle, Ramon, Muravchik, Carlos H.

“…In this letter, we present a new variable impedance termination consisting of two polarized diodes. To generate a complex-valued impedance, two controlled…”
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High-Speed Data Acquisition System for GNSS Applications by Leanez, Jorge G. Vega, Barberia, Jose I., Rodriguez, Santiago, Diaz, Juan G., La Valle, Ramon Lopez, Garcia, Javier G., Muravchik, Carlos H.

“…This paper presents the design and implementation of a versatile high speed data acquisition system for GNSS signals capable of transferring large amounts of…”
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Diseño de las Antenas de Comunicaciones para la Misión USAT I by Lombardozzo, Simon M., La Valle, Ramon Lopez, Roncagliolo, Pedro A.

“…En este trabajo se presenta el diseño de las antenas de comunicaciones para el nanosatélite de la Universidad Nacional de La Plata USAT I, el cual posee un…”
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