Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"1.8 GHz"”.
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A low power, low noise, 1.8 GHz voltage-controlled oscillator
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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A 1.8-Ghz CMOS Fractional -N Frequency Synthesizer With Randomized Multiphase VCO
… demonstrate the concept, a fully integrated 1.8-GHz frequency synthesizer with randomized multiphase VCO was designed. The prototype, implemented in a standard 0.6-mum CMOS technology, achieves -118 dBc/Hz phase noise at 1-MHz offset and exhibits close-in phase noise between -80 and -90 dBc/Hz up …
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The effects of a 1.8 GHz continuous electromagnetic fields on mucociliary transport of human nasal mucosa
… study was to investigate the effects of a 1.8 GHz continuous electromagnetic fields (EMF) on human nasal mucociliary transport and to determine the pathophysiology of ciliary beat frequency (CBF) during an EMF-induced change. Human nasal mucosa cells were exposed to a 1.8 GHz EMF (SAR= 1.0 …
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Measured and Modeled Time and Angle Dispersion Characteristics of the 1.8 GHz Peer-to-Peer Radio Channel
In an extensive outdoor propagation study, low antenna heights of 1.7 m are used at both the transmitter and the receiver to measure over 3500 wideband power-delay profiles (PDPs) of the channel for a peer-to-peer communications system. Rural and urban areas are studied in 22 different …
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Electromagnetic radiation level detection and monitoring system for triple band GSM signal using calculable antenna factor method
… antenna (sensors) at the frequencies of 0.9 GHz, 1.8 GHz and 2.1 GHz. The system then compares the detected level with the safety limits set by international standard (ICNIRP). The designed unit acts as a receiver which is a sensor, and a detector which is used to produce accurate DC voltage. …
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Design of fractal minkowski diversity antenna for LTE and WIFI application
… an antenna with multi-band frequency of 1.8 GHz and 2.4 GHz for LTE system and WIFI. Design process involves a mathematical analysis, simulation and fabrication process. Fractal antenna properties were observed from the measurement of return loss, standing wave ratio (SWR), bandwidth and …
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Monolithic integration of semiconductor ring lasers
… as short as 120 ps at a repetition rate of 1.8 GHz are obtained by injecting only a few mA of current into the tuning section.
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Minimum cell size for information capacity increase in cellular wireless network
… at carrier frequencies, f c = 0.9 and 1.8 GHz, cell size radii R > 1 km and basic path loss exponent α ≥ 2. The future and emerging wireless communication systems are expected to be operating at frequencies f c > 2 GHz (3.35 - 15.75 GHz), cell size radii R≤ 1 km and basic path loss exponent …