Antenna tuning

Antennatuning9AntennaMeasurementsTheelectricalcharacteristicsofanantennathatareofinteresttoobtainbydirectmeasurementare:1)Thefrequencyatwhichtheantennaistuned.2)Thegain.3)Theradiationpattern.Tuningofanantenna.Tocheckifanantennaistunedatthecorrectfrequency,wecanuseaDirectionalCouplerandaSpectrumAnalyzer.ThesignalisinternallygeneratedbytheTrackingGeneratoroftheSpectrumAnalyzer,whichisconnectedtotheinputportoftheDirectionalCoupler.TheantennaisconnectedtotheoutputportoftheDirectionalCoupler.SPECTRUMANALYZERWITHTRACKINGGENERATORANTENNAUNDER