Radiation pattern
Diseño de un arreglo de antena plana con capacidad de control del patrón de radiación a frecuencias de microondasDesign of a planar antenna array capable to control the radiation pattern at microwave frequenciesp
... the radiation pattern, for operation at ...the radiation pattern ± 30 degrees, with an impedance bandwidth between 380-545MHz, being more than ...
155
Reconfiguración dinámica del patrón de radiación en agrupamientos de antenas a bordo de satélites de órbita bajaDynamic reconfiguration of the radiation pattern in antenna arrays onboard low earth orbit satellites
... array radiation pattern, directing adaptively the main lobe onboard the satellite towards a specific direction over the Earth, within its visibility ...
127
Multibeam Network Design and Measurement for Triangular Array of Three Radiating Elements
... The radiating element consists of two stacked circular patches. The principal patch is fed in quadrature in two points separated 90º, in order to get circular polarization. The coupled patch, which has smaller size, is ...
5
Demonstration of a Shaped Beam Reflectarray Using Aperture-Coupled Delay Lines for LMDS Central Station Antenna
... In the first step, assuming a fixed amplitude distribution on the reflectarray sur- face given by the feed radiation pattern, a phase-only synthesis is applied to compute the phase of [r] ...
9
Design of a printed antenna for a communication system working at C band for unmanned aerial vehicles.
... For over two decades, research scientists have developed several methods to increase the bandwidth of a patch antenna. Many of these techniques involve adjusting the placement or type of element used to feed the antenna. ...
67
Application of Genetic Algorithms to the Manufacturing of Large Planar Array Antennas on RADAR Applications
... During the antenna design process all these parameters are optimized according to the radar requirements. However, the commented slight differences among the linear arrays introduce small variations that can be used to ...
5
Design and Optimization of Rectangular Microstrip Patch Array Antenna Using Frequency Selective Surfaces for 60 GHz
... The application of FSSs in the antennas proved to be a good solution to enhance radiation parameters of the antenna. The parameters of the original antenna have been improved after optimization, in particular the ...
9
Radiation-induced breast angiosarcoma: a case report.
... In the first review, the patient again had multiple skin lesions in the inferior-internal and superior-external quadrants of the left breast. After having ruled out the existence of deep plane invasion by CT scan, it was ...
6
Combined low initial DNA damage and high radiation-induced apoptosis confers clinical resistance to long-term toxicity in breast cancer patients treated with high-dose radiotherapy
... ionizing radiation. It has been suggested that the radiation-induced damage measured on lymphocytes could be proportional to the acute damage evaluated on the skin of treated patients ...
8
A Security Pattern for Cloud service certification
... Cloud computing is interesting from the economic, operational and even energy consumption perspectives but it still raises concerns regarding the security, privacy, governance and compliance of the data and software ...
8
Núm. 41 (2007)
... [17]. Radiation toxicity studies of therapeutic biological radiopharmaceuticals should include some levels (the maximal dose should be at least twice the maximum planned human radiation dose) to identified ...
5
The radiation impedance of orbiting conductors
... Taking into account a nonvanishing contactor length along the tether proves essential for a proper model and yields an impedance varying as the inverse of contactor area.. Simple resu[r] ...
10
Pattern Definitions and Semantically Annotated Instances
... how pattern instantiations can be formalised as a substitution of the parameters in a pattern ontology, providing formal definitions for both ...multiple pattern instantiation, and suggested ontology ...
8
Rietveld quantitative phase analysis with molybdenum radiation
... In a standard laboratory instrument, the X-rays are produced in a sealed-tube source, in the same way as they were produced in the original tube discovered by W. C. Rontgen in 1895, where electrons accelerated by a ...
33
Radiation Physics for Medical Physiscists – E.B. Podgorsak
... Dose monitoring systems in medical linacs are based on transmission ion- ization chambers permanently imbedded in the linac clinical photon and electron beams. The chambers are used to monitor the beam output (pa- tient ...
457
The distributed nature of pattern generalization
... In a series of papers, Radford (1999, 2000, 2001a, 2001b, 2003, 2006) em- pirically demonstrates the semiotic emergence of direct or closed variable-based expressions in the context of culturally mediated activity. ...
27
Pattern-based OWL Ontology Debugging Guidelines
... - Guidelines (G). They represent complex expressions used in an ontology component denition that are correct from the logical and cognitive points of view, but for which the ontology developer could have used other ...
15
Automated Measurement Procedure for the Calibration of Planar Active Arrays
... For the S coupling parameter test, it was applied a carefully measurement campaign to the radiating element’s ports of the antenna array. The S coupling measured parameters were used in the simulation with the Pozar’s ...
5
KEYWORDS/ TOPIC INDEX
... Radioimmunoguided intraoperative radiation therapy: 0-20.. Rectum or Rectosigmoid:.[r] ...
7
Pattern formation in clonal plants
... the right. We notice that having a larger number of plants distributed on a larger circle may give rise to other patterns which include separated solitons. If, for example, we have an original amount of 400 plants than ...
33
