Uitwerking exameneisen examen Zendamateur N/F

Uitwerking exameneisen examen Zendamateur N/F
Pagina 98
Uitgangsfilter [pi-filter] .............................................................................................................. 57
Frequentiemodulator (FM signaal) ........................................................................................... 57
LF begrenzer .............................................................................................................................. 57
Balansmodulator ....................................................................................................................... 58
Fasemodulator........................................................................................................................... 58
Zijbandfilter ............................................................................................................................... 58
5.4 Zenderspecificaties ................................................................................................................ 58
Frequentiestabiliteit [N] ................................................................................................................ 58
HF bandbreedte [N] ....................................................................................................................... 58
Zijbanden [N] ................................................................................................................................. 58
Lf-bandbreedte .............................................................................................................................. 58
Niet-lineariteit (harmonische en intermodulatievervorming) ...................................................... 58
Uitgangsimpedantie ...................................................................................................................... 58
Uitgangsvermogen [N] .................................................................................................................. 58
Rendement .................................................................................................................................... 59
Frequentiezwaai ............................................................................................................................ 59
Modulatie-index ............................................................................................................................ 59
Sleutelklikken en chrips ................................................................................................................. 59
Ongewenste hf-uitstralingen [N] ................................................................................................... 59
Effecten van oversturing ............................................................................................................... 59
Faseruis .......................................................................................................................................... 59
Kaststraling .................................................................................................................................... 59
Harmonische [n] ............................................................................................................................ 59
6 Antennes en transmissielijnen ...................................................................................................... 60
6.1 Antennetypen ........................................................................................................................ 60
Halvegolfantenne met voeding in het midden [N] ........................................................................ 60
Halvegolfantenne met voeding aan het einde [N] ........................................................................ 61
Gevouwen dipool .......................................................................................................................... 61
Kwartgolf verticale antenne [groundplane] [N] ............................................................................ 61
Antenne met parasitaire elementen [Yagi] [N] ............................................................................. 61
Apertureantennes (parabolische reflector, hoorn) ....................................................................... 61
Dipool met sperkringen (traps) ..................................................................................................... 62
6.2 Antenne-eigenschappen ....................................................................................................... 62
Stroom- en spanningsverdeling ..................................................................................................... 62