Citation
Abstract
The complex mixer is composed of two channels. One channel contains the signal mixed with the sine of the reference frequency and the other contains the signal mixed with the cosine. Errors unique to this system are gain and phase shifts of one channel with respect to the other. When the power spectrum of the output of the mixer, considered as a complex quantity, is calculated, these errors produce an unwanted image response to each signal component in the true spectrum. This analysis was carried out to ensure that hardware specifications were sufficient to limit these image responses to tolerable levels. Calculations for various gain and phase errors show that image responses in the power spectrum for prototype hardware will be limited to less than 1% of the true signal components.
Details
- Volume
- XII
- Published
- December 15, 1972
- Pages
- 47–50
- File Size
- 302.5 KB