A microprocessor controlled V.C.O. as a spread spectrum synthesizer
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The results of the use of a microprocessor as the stabilizing portion of a spread spectrum synthesizer are reported. The uses of spread spectrum techniques are discussed and then various modulation schemes and synthesis processes are considered. To produce a wideband, flexible modulator, a hybrid direct sequence/frequency-hopping synthesizer was designed. The critical wideband spreading function is created by the frequency hopping portion, so this was the part of the system which was built. The effects of environmental changes, such as temperature variations and power supply fluctuations were studied and the ability of a microprocessor to counteract these effects was investigated. The results of these experiments show that a microprocessor can control the post-tuning drift caused by these various effects.
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This work is available on request. You can request a copy at https://library.carleton.ca/forms/request-pdf-copy-thesis
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Copyright © 1982 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 1982
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