Fitchburg State University
Industrial Technology
An overview of important pattern density requirements and tradeoffs for advanced RF, analog and digital technologies is presented. This paper reviews process sensitivities to pattern density, the advantage of pattern density compliant... more
An overview of important pattern density requirements and tradeoffs for advanced RF, analog and digital technologies is presented. This paper reviews process sensitivities to pattern density, the advantage of pattern density compliant designs, performance and modeling considerations, and presents methods of detecting and enhancing pattern density deficiencies to improve overall manufacturability.
- by Howard Landis and +1
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Providing all band power amplification and harmonic rejection are objectives with orthogonal implementations. This paper is a review of a new distributed power amplifier (DPA) architecture using programmable frequency dispersion. This... more
Providing all band power amplification and harmonic rejection are objectives with orthogonal implementations. This paper is a review of a new distributed power amplifier (DPA) architecture using programmable frequency dispersion. This frequency domain dispersion is designed to achieve electronic harmonic filtering within the intended frequency band. Tunable reactive components are not practical in a high power transmitter network. Instead vector
- by Alvin Joseph and +1
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- Signal Processing, Time Delay, High Power, Power Amplifier
Statistical phase noise analysis and measurements are presented for a population of RF CMOS VCOs. The measured mean values for phase noise at 1 kHz and 1 MHz offset frequencies are -46 dBc/Hz and -130 dBc/Hz respectively. However a large... more
Statistical phase noise analysis and measurements are presented for a population of RF CMOS VCOs. The measured mean values for phase noise at 1 kHz and 1 MHz offset frequencies are -46 dBc/Hz and -130 dBc/Hz respectively. However a large variation from the mean (+/-3 dBc/Hz) is observed for the close-in phase noise. This variation is attributed to the upconverted
- by Randy Wolf and +1
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- Statistical Analysis, 1/f Noise, Phase Noise
A cascode low noise amplifier (LNA) at 2V power supply has been implemented in 0.18um IBM SiGe BiCMOS technology. The circuit is highly integrated with ESD protection circuits. The die is packaged and mounted on the test board. The... more
A cascode low noise amplifier (LNA) at 2V power supply has been implemented in 0.18um IBM SiGe BiCMOS technology. The circuit is highly integrated with ESD protection circuits. The die is packaged and mounted on the test board. The measured data show that power ...
- by David Scagnelli and +1
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- Low noise amplifier, Chip, Noise Figure
Knowledge of temporal changes in the area burned by wildfires is required to understand their influence on global climate change. This paper reviews the primary methods of reconstructing and measuring area burned. The area burned by... more
Knowledge of temporal changes in the area burned by wildfires is required to understand their influence on global climate change. This paper reviews the primary methods of reconstructing and measuring area burned. The area burned by wildfires is typically reconstructed using historical records, satellite imagery, tree-ring records and sediment records. These methods are described and compared in terms of the spatial and temporal resolutions and extents of the observations made using them. The different ways of measuring area burned that they employ are also described and compared. Tree-ring and sediment studies are uniquely useful over small areas and long time periods, while historical records and AVHRR images are more useful over large areas and shorter time periods. The methods do, however, overlap over several orders of magnitude of scales of observation. The different methods of measuring area burned, the fire rotation, mean fire interval and fire cycle, are also found to have similarities. A comparison of the estimates of area burned obtained using different methods in the same area suggest that, although somewhat similar, calibration methods need to be developed to translate between them. It is thus suggested that although much current work is focussed on refining individual methods of estimation, some emphasis should be given to determining methods to compare the results obtained using different methods. This would allow the meaningful comparison of the estimates of area burned made over very different time periods and spatial areas.