3.5 to 5 GHz, 7 to 10 GHz and 14 to 20 GHz FMCW Modulator for RADAR

The WEA520SFMCW22G is an ultra-fast ultra-linear FMCW frequency synthesizer capable of generating 1400 MHz Chirps at 20 GHz frequency. It uses a reference input ranging from 20 MHz to 200 MHz, with the use of an external Crystal or clock (CMOS or LVDS). The WEA520SFMCW22G generates an RF signal spanning from 3.5 GHz up to 20.25 GHz with the four integrated VCOs and the use of an RF frequency doubler and divider. The synthesizer utilizes the WEASIC proprietary WeCHIRPTM, wePACTM, weCALTM technologies to provide very fast ramp retracing and settling times while maintaining industry leading phase noise during chirping. The modulator has a phase synchronization capability for coherent operation with other modulators. It also provides synchronized trigger event signals for the RADAR Transmitter and Receiver chips. By the use of internal high PSRR LDOs, the WEA520SFMCW22G can withstand noisy power supply environment. It is powered by a single 1.8 V supply