Analysis of Noise Characteristics of Multichannel Systems of the Formation of Signals of Georadars with Synthesized Aperture

Figure 11

SPD of phase noises of a hybrid frequency synthesizer with a DDS as a frequency divider in the feedback loop of the PLL and the ACPDfor output frequencies of 500 MHz (n = 1, N = 1, = 0,2, and = 1,95), 2000 MHz (n = 1, N = 1, = 0,05, and = 1,95), and 3500 MHz (n = 1, N = 2, = 0,057, and = 1,95).