Axial mode helix antennas are used as RFID base station antennas but the number of winding of helix antennas are at least 10, making them too high for use as base station antennas. To address the problem, an integrated wire elliptical helical antenna with novel cuboids dielectric resonator loading f.....
[更多]
Conventional printed circuit boards (PCBs) cannot provide a sufficient bandwidth to meet the requirement of high transmission speed in future telecommunications and computing systems. The objective of the project is to develop optical PCBs, where all high-speed data is transmitted by optical wavegui.....
[更多]
The invention relates to an improved method for storing hydrogen in single-walled carbon nanotubes. Carbon nanotubes are dipped in hydrogen gas for absorption. The size of carbon nanotubes to be used depends on the density of hydrogen molecules, and generally, nanotubes of diameters from 0.5 to 1.2 .....
[更多]
The thin film transistors (TFT) have been built on patterned flexible bilayer acid/metal oxide dielectrics polymer substrate by solution process. Based on this TFT technology, RFID tags and amine sensors have been fabricated with low cost using inexpensive molecular materials. Fabrication through so.....
[更多]
During the turn-on and turn-off switching processes, power converters have to withstand high voltage and current, leading to high switching losses and stresses. The invention is a passive lossless snubber cell with minimum stress and wide soft-switching range. The energy reset / recirculation proces.....
[更多]
|< <- | [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] | -> >| |