KEYWORDS: Radar, Modulation, Modulators, Photodetectors, Modeling, Data modeling, Signal to noise ratio, Interference (communication), Temperature metrology, Defense and security
The distribution of analogue RF signals within a high performance radar system is challenging due to the limited space available and the high levels of performance required. This work investigates the gain, linearity and noise performance that can be achieved by an externally modulated direct detection link designed for operation up to 20 GHz using commercially available components. The aim was to assess the suitability of such links for use in future radar systems. Good correlation has been shown between modelled and measured results demonstrating that the performance should satisfy the linearity requirements for many radar applications.
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