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We present a balun LNA with double feedforward and noise and distortion cancellation. This LNA combines a common-gate and a common-source stage, in which the resistive loads are replaced by transistors biased close to saturation. This allows low supply voltage, without gain degradation. The proposed feedforward approach boosts the LNA gain and reduces the noise figure (NF). Simulation results with...
In the clinical practice the concerns about the administration of hypnotics and analgesics for minimally invasive diagnostics and therapeutic procedures have enormously increased in the past years. The automatic detection of changes in the signals used to evaluate the depth of anesthesia is hence of foremost importance in order to decide how to adapt the doses of hypnotics and analgesics that should...
In this paper we present a balun LNA with gain adjustable continuously by a voltage. The LNA is based on the combination of a common-gate and a common-source stage to cancel the noise and distortion of the common-gate stage. To obtain higher gain with the same DC voltage drop we replace resistors by PMOS transistors. This also allows continuous gain control and we show that by proper design, the effect...
Back-to-front, show-through, or bleeding are the names given to the interference that appears whenever one writes or prints on both sides of translucent paper. Such interference degrades image binarization and document transcription via OCR. The technical literature presents several algorithms to remove the back-to-front noise, but no algorithm is good enough in all cases. This article presents a...
In this paper we present a MOSFET-only implementation of a balun LNA. This LNA is based on the combination of a common-gate and a common-source stage with cancelling of the noise of the common-gate stage. In this circuit, we replace resistors by transistors, to reduce area and cost, and minimize the effect of process and supply variations and mismatches. In addition we obtain a higher gain for the...
The use of GPS technology continues to grow and recent accuracy. augmentations will generate ever more innovative applications. The issue of GPS use under or near electric power lines has been raised since some GPS documents have vague wamings about such use. First, GPS and the satellite microwave signals used to determine position, velocity, and time are described. Then the potential effects of electromagnetic...
The new nationwide differential global positioning system network uses the 283.5-325 kHz hand to broadcast differential GPS (DOPS) correction messages. Concem has been expressed that power line corona and gap discharge noise could degrade the performance of DGPS receivers using this band. Previous work on power lines and the AM broadcast band identified corona and gap discharges as broadband noise...
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