Zobrazeno 1 - 10
of 32
pro vyhledávání: '"George Hotopan"'
Autor:
George Hotopan, Andreea Hadarig, Miguel Garcia, Samuel Ver Hoeye, Fernando Las-Heras Andres, Rene Camblor Diaz, Carlos Vazquez Antuna
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:1361-1369
A millimeter-wave subharmonic-mixer topology based on a few-layer graphene component has been designed, manufactured, and experimentally characterized. The circuit has been conceived to perform the up/downconversion of a signal in the WR-3 band, betw
Autor:
Ana Arboleya-Arboleya, George Hotopan, Miguel Fernandez-Garcia, Fernando Las-Heras, Yuri Alvarez-Lopez, Rene Camblor-Diaz, Carlos Vazquez-Antuna, Jaime Laviada, Cebrian Garcia-Gonzalez, Samuel Ver Hoeye
Publikováno v:
IET Microwaves, Antennas & Propagation. 8:1170-1178
A phaseless setup for a submillimetre-wave frequency scanning-based radar system is presented. The phase retrieval setup is implemented by modifying a previous implementation at microwave frequencies. In the new setup, the number of involved componen
Autor:
Miguel Fernandez, Andreea Hadarig, Fernando Las Heras, R. Camblor, Samuel Ver Hoeye, George Hotopan, Carlos Vazquez
Publikováno v:
Applied Physics A. 118:83-89
In this work, the nonlinear electromagnetic response of a few-layer graphene sheet is experimentally analyzed. The few-layer graphene sheet is obtained through mechanical exfoliation from highly ordered pyrolytic graphite and embedded in a rectangula
Autor:
Jaime Laviada, Andreea Hadarig, Miguel Fernandez, Yuri Alvarez, George Hotopan, Cebrian Garcia, Samuel Ver-Hoeye, Carlos Vazquez, Fernando Las-Heras, R. Camblor, Ana Arboleya
Publikováno v:
IEEE Transactions on Antennas and Propagation. 61:5689-5696
A new submillimeter-wave imaging system based on the frequency scanning concept is presented. Using significantly less information than beam-steering techniques, frequency scanning-based imaging systems are able to provide angular information in rang
Autor:
George Hotopan, Carlos Vazquez-Antuna, Samuel Ver-Hoeye, Andreea Hadarig, Fernando Las-Heras Andres, Miguel Fernandez-Garcia, Rene Camblor-Diaz
Publikováno v:
Scopus-Elsevier
Autor:
Carlos Vazquez-Antuna, Samuel Ver-Hoeye, Marta Gonzalez Corredoiras, Rene Camblor-Diaz, Miguel Fernandez-Garcia, George Hotopan, Fernando Las-Heras Andres
Publikováno v:
Scopus-Elsevier
Autor:
George Hotopan, Samuel Ver-Hoeye, Fernando Las-Heras, Yuri Alvarez-Lopez, R. Camblor, Cebrian Garcia-Gonzalez, Miguel Fernandez-Garcia, Carlos Vazquez-Antuna, Jaime Laviada
Publikováno v:
Journal of Electromagnetic Waves and Applications. 27:430-438
A phase retrieval technique for multifrequency scattered field acquisition is presented in this paper. The proposed setup is based on indirect holography schemes so that it combines the desired signal with a known reference signal. The setup is used
Autor:
Fernando Las Heras, Samuel Ver Hoeye, George Hotopan, Carlos Vazquez, Miguel Garcia, R. Camblor
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 60:2494-2504
In this paper an in-depth study of the behavior of rationally synchronized oscillators (RSO) is presented. The circuit is optimized in order to achieve a broad synchronization bandwidth with low reference signal power through the selection of the ade
Autor:
George Hotopan, Miguel Fernandez-Garcia, Rene Camblor-Diaz, Carlos Vazquez-Antuna, and Fernando Las Heras Andres, Samuel Ver-Hoeye
Publikováno v:
Progress In Electromagnetics Research. 126:149-168
In this work, the linearity of a high gain Harmonic Self Oscillating Mixer (HSOM) is analyzed. In order to obtain high conversion gain, the working point of the HSOM is established close to a Hopf bifurcation point. The traditional flgures of merit u
Autor:
S. Ver Hoeye, Miguel Fernandez, George Hotopan, Carlos Vazquez, Fernando Las-Heras, R. Camblor
Publikováno v:
Journal of Electromagnetic Waves and Applications. 26:468-479
In this work, a frequency scanning array of antipodal linearly tapered slot antennas is presented. The system is capable of performing beam steering from –11 to 10 degrees while sweeping the frequency from 8.25 GHz to 11.5 GHz. The beam scanning is