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A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. [2] In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism (such as RF switches, varactors, mechanical actuators or tunable materials) that enable the intentional redistribution of the RF currents over the ...
Reconfigurable computing: changing the data path of a computing system in addition to the control flow; Control reconfiguration: changing the loop structure and controller parameters in an automatic control loop; Reconfigurable antenna: changing the antenna physically or electrically to control its antenna properties
Smart antennas (also known as adaptive array antennas, digital antenna arrays, multiple antennas and, recently, MIMO) are antenna arrays with smart signal processing algorithms used to identify spatial signal signatures such as the direction of arrival (DOA) of the signal, and use them to calculate beamforming vectors which are used to track and locate the antenna beam on the mobile/target.
This antenna has fixed cell delays, configured by different cutout sizes in each cell, as can be seen in the top-right inset. Larger cutouts produce the dark rings visible in the overview. A reflectarray antenna (or just reflectarray ) consists of an array of unit cells, illuminated by a feeding antenna (source of electromagnetic waves ).
The image antenna is used in calculating electric field vectors, magnetic field vectors, and electromagnetic fields emanating from the real antenna, particularly in the vicinity of the antenna and along the ground. Each charge and current in the real antenna has its counterpart in the image, and may also be considered as a source of radiation.
Luigi Mangione, who has been charged in last week's murder of UnitedHealthcare CEO Brian Thompson in New York City, was taken into custody on unrelated charges in Pennsylvania earlier on Monday.
When costumers buy one full-priced item from the McValue menu, they may add an additional item for just $1. "When it comes to value, we know there's no one-size-fits-all. We've worked closely with ...
Some of President-elect Donald Trump's cabinet picks are facing hurdle after hurdle on the road to confirmation but not those on his economic team (at least so far).