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Showing 1 to 7 of 7 for “"Direct Digital Synthesis"”.
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Asynchronous direct digital synthesis modulator implemented on a FPGA
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Tutorial on designing and simulating a truncation spurs-free direct digital synthesizer (DDS) on a field-programmable gate array (FPGA)
Direct digital synthesis is a technique for using digital data processing blocks as a means to generate a frequency and phase tunable output signal referenced to a fixed-frequency precision clock source. Many telecommunication applications require such a high-speed switching, fine- tuning and …
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X-band Doppler simulator for sport projectile radars
… on the application, these devices use either the digital radio frequency memory (DRFM) or direct digital synthesis (DDS) simulation method. Developing Doppler simulators as a diagnostic tool for sport Doppler radars is a growing need to evaluate and assess the performance of these radars. This …
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Design and Implementation of a Swept Time Delay Short Pulse (SSTDSP) Wireless Channel Sounder for LMDS
… sample and hold gating to reduce the analog to digital converter sampling rate required to digitize the nanosecond short pulses from 2 Gsps to 1 Msps, while retaining the required effective Nyquist sampling rate of 2 Gsps. This dramatically reduces the memory, digital signal processing, and data …
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Phase noise and spur reduction in an array of direct digital synthesizers
… signals is to combine the outputs of multiple direct digital synthesizers (DDSs) arranged in a parallel configuration. In such an approach, if all noise is uncorrelated across channels, the noise will decrease relative to the combined signal power, resulting in a reduction of sideband noise and …
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Tutorial on designing and implementing a direct digital synthesizer (DDS) on a field programmable gate array (FPGA)
… One such a frequency synthesizer is a direct digital synthesizer (DDS). This thesis work utilizes a design that aims to combine digital circuit design and electronic communication knowledge, and apply them in a practical environment. It does so by providing a tutorial on designing and …
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Digitální AM/FM vysílač
Táto diplomová práca je zameraná na teoretický popis aj praktickú realizáciu softwarovo definovaného vysielača. Hlavným zámerom práce bolo skonštruovať funkčný prototyp softwarovo definovaného vysielača v pásme FM. Teoretická časť je určená na popísanie základných častí zariadenia a princípov …