SPECTRUM ANALYZER

FIELD: radio instruments. SUBSTANCE: device is designed as panoramic superheterodyne receiver with four-fold frequency conversion. Input circuit of device has three switched band-pass filters which switching runs simultaneously with switching of squarer which is inserted in reference voltage circuit...

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Bibliographische Detailangaben
Hauptverfasser:	IVANOVA I.I, BLINOV V.F, LADNYJ V.I, PRILEPSKIJ V.V, MEDVEDEV A.I
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	FIELD: radio instruments. SUBSTANCE: device is designed as panoramic superheterodyne receiver with four-fold frequency conversion. Input circuit of device has three switched band-pass filters which switching runs simultaneously with switching of squarer which is inserted in reference voltage circuits of one mixer. Reference input of said mixer receives signal from voltage-controlled oscillator which frequency is squared. This results in possibility of alternation of mixer signal in range of 527-827 MHz. Unit for frequency recalculation is connected to decade unit of digital indication board in order to achieve correct indication in extended range. EFFECT: increased frequency range. 2 dwgn