| EPSRC Reference: |
GR/N18048/01 |
| Title: |
A NEW ARCHITECTURE FOR FREQUENCY SYNTHESIS |
| Principal Investigator: |
Collins, Dr S |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Engineering Science |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
08 January 2001 |
Ends: |
07 January 2004 |
Value (£): |
166,415
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| EPSRC Research Topic Classifications: |
| Design & Testing Technology |
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| EPSRC Industrial Sector Classifications: |
| Electronics |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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The ability of a direct digital synthesis (DDS) system to create an output signal with a single controllable frequency can be exploited in a range of applications including mobile communications and instrumentation systems. However, the performance of existing systems is limited by non-linear effects in the digital-to-analogue converter (DAC) which create undersirable components in the output spectrum. The primary aim of this proposal is to construct and test a new DDS architecture which avoids these problems by replacing the DAC by an analogue read-only memory. This memory will be based upon floating-gate devices which have been predicted to have data retention times of several years. However, there is now some doubt concerning the validity of the technique used to make this prediction. For some important applications, such as mobile communications, such long retention times are beneficial but not critical. However, by investigating these claims it will be possible to identify other potential applications for these devices. Similarly, it has been claimed that floating-gate devices can be used to create more compact and less power hungry high frequency digital circuits. The potential benefits of employing floating-gate devices can be used to create more compact and less power hungry high frequency digital circuits. The potential benefits of employing floating-gate devices in the digital adder/accumulator within the DDS system will therefore also be investigated.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ox.ac.uk |