Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.346244 |
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Title: | The performance of phase-locked loops for frequency control in single sideband land mobile radio receivers | ||||||
Author: | Sladen, J. P. H. |
ISNI:
0000 0001 3416 9179
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Awarding Body: | University of Bath | ||||||
Current Institution: | University of Bath | ||||||
Date of Award: | 1983 | ||||||
Availability of Full Text: |
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Abstract: | |||||||
All of the single sideband systems currently being considered for the land mobile radio service transmit a pilot tone in addition to the wanted information. The pilot is required in the receiver for automatic gain control and automatic frequency control. In particular, a phase-locked loop is often employed to perform receiver frequency control. This thesis begins by presenting background information on phase-locked receiver design and the problem caused by excess time delay introduced into the loop of a conventional phaselocked receiver. A novel phase-locked loop configuration is introduced and shown to overcome the effects of the excess time delay. The same technique is shown to greatly improve the adjacent channel selectivity performance of a phase-locked receiver. Random phase and amplitude variations are impressed upon a signal transmitted through the land mobile multipath environment. After discussing several models of the propagation medium, some of the limitations it imposes on phase-locked SSB receiver performance are introduced.
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Supervisor: | Not available | Sponsor: | Not available | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.346244 | DOI: | Not available | ||||
Keywords: | Electrometry & electronic test equipment | ||||||
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