The use of double-balanced microwave mixers as wideband analog noise signal correlator

Using of the multiplication circuits as broadband microwave analog correlator has been presented in the article. Main aim of the work was to check if a double-balanced mixer commonly used in quasi-linear frequency conversion systems can be a multiplier. Theoretical considerations presented in chapter 1 were carried out for this purpose. Two measuring systems were constructed for the purpose of determining the autocorrelation function of the band-limited noise signal. The tests were carried out with the noise signal in bandwidth B = 540 MHz at center frequency f
0
= 2500 MHz. The power of this signal was regulated by microwave amplifier and fixed attenuators. The bandwidth was determined by two filters made on the asymmetrical stripline technique. Obtained measurement results and necessary analyzes of these results in chapters 2 and 3 are presented and the whole is summarized with conclusions.