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A power-efficient high data-rate OFDM based wideband radio front-end implemented in 90nm CMOS technology using a combination of circuit, system, silicon integration, and analog built-in-self calibration techniques is presented. These techniques are illustrated in the context of a direct conversion wideband DVB-H/ISDB-T receiver front-end signal path operating over the 470 to 702MHz bands, including...
The field of sputter deposition has gained an impetus due to its benefits such as higher adhesion, higher deposition rate, and uniform thickness over large substrates and better stoichiometric deposition as compared to the conventional PVD techniques. Different types of power sources are prevalent such as radio frequency (RF), direct current (DC) and pulsed DC voltage. Using the power supply in a...
The recently allocated 71-76 GHz and 81-86 GHz bands provide an opportunity for Line Of Sight (LOS) links for directional point-to-point “last mile” links. An efficient use of this spectrum may allow wireless to finally “catch up” with wires, leading to systems such as “multi-Gigabit wireless Ethernet,” and “wireless fiber.” However, the transmission at such a frequency range is characterized by several...
A low cost, fast yet highly accurate method for determining liquid level inside small containers, e.g. vials is described. The non-invasive technique can easily resolve sub-1% levels in vials containing a few ml or less of liquid and potentially be order of magnitude more accurate than capacitive level sensors. The vial is placed inside an electrically conducting holder to guide a radio-frequency...
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