Agilent 1964-08 free download

File name 1964-08.pdf

HEWLETT-PACKARD JOURNAL T E C H N I C A L I N F O R M A T I O N F R O M T H E - h p L A B O R A T O R I E S Vol. 15, No. 12 lUBLISHED BY THE HEWLETT-PACKARD COMPANY, 1501 PAGE MILL ROAD, PALO ALTO, CALIFORNIA AUGUST, 1964 A New Microwave Spectrum Analyzer A new spectrum analyzer displays up to 2,000 Mega cycles of the spectrum at a time for RFI checking, spec trum surveillance, and other wide-band investigations. IVliCROWAVE spectrum analyzers are swept-fre- quency receivers with visual display. The basic function of a spectrum analyzer is to plot input signal amplitude as a function of frequency while the analyzer automatically tunes through a selected range of frequencies. Spectrum analyzers are potentially useful in the laboratory as well as in the field because they provide quantitative information about several signals simultaneously. For instance, they facili tate adjustment of devices that operate with several different frequencies at the same time, such as parametric amplifiers. A spectrum ana lyzer connected to an antenna can display a plot