J. E. López

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—An original and flexible pyramidal antenna for satellite or terrestrial application services is presented. The ground plane of the antenna is perforated and loaded with a cutoff open-ended waveguide: this original configuration leads to a good tradeoff between rear radiation and impedance matching. Trap-loads are used to achieve multiband operation while(More)
BACKGROUND AND OBJECTIVE Cardiovascular (CV) risk stratification is a highly complex process involving an extensive set of clinical trials to support the clinical decision-making process. There are many clinical conditions (e.g. diabetes, obesity, stress, etc.) that can lead to the early diagnosis or establishment of cardiovascular disease. In order to(More)
—A new pyramidal antenna for satellite application is presented. Sierpinski triangle antennas are chosen as radiating elements for their multiband features. The ground plane of the antenna is perforated and loaded with a cutoff open-ended wave-guide: this original configuration leads to a good tradeoff between rear radiation and impedance matching. Ideal(More)
— A novel reconfigurable and circularly polarized antenna topology for satellite application services, based on a pyramidal geometry, is proposed. Frequency agility is simply obtained by loading the radiating elements by Radio-Frequency switches. The ground plane of the antenna is perforated and loaded by a cutoff and open-ended waveguide. The length of(More)
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