Design and characterisation of a phaselocked v.h.f. land mobile radio receiver

JP McGeehan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

In this paper a `long loop' VHF phase-locked AM receiver with synchronous detector is described. The effect of the narrow-band Chebyshev I.F. filter on receiver lock-in range, hold-in range and capture time is investigated as a function of carrier level, -60 to -120 dBV, for a range of low pass filter time constants. The transient response of the Chebyshev filter and instantaneous limiting in the I.F. strip are shown to play a crucial role in determining the time which the receiver takes to lock onto the carrier. The receiver is not significantly more complex or expensive than sets currently in use and has the advantage that it may also be used to demodulate DSBDC signals
Translated title of the contributionDesign and characterisation of a phaselocked v.h.f. land mobile radio receiver
Original languageEnglish
Title of host publicationConference on Civil Land Mobile Radio
Place of PublicationLondon
PublisherInstitution of Electronic and Radio Engineers (IERE)
Pages37 - 46
Number of pages10
Volume1
ISBN (Print)0903748274
Publication statusPublished - Nov 1975
EventConference on Civil Land Mobile Radio - Teddington, United Kingdom
Duration: 1 Nov 1975 → …

Conference

ConferenceConference on Civil Land Mobile Radio
CountryUnited Kingdom
CityTeddington
Period1/11/75 → …

Bibliographical note

Conference Proceedings/Title of Journal: Conference on Civil Land Mobile Radio
Rose publication type: Conference contribution

Sponsorship: The work described was carried out under contract from the Directorate of Telecommunications, Home Office, and the author wishes to thank the Director for his support and permission to publish this paper

Keywords

  • mobile radio systems
  • phase-locked loops

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