A Ku-FMCW Frequency Source for THz

A design scheme and implementation of a Ku-Band Frequency Modulated Continuous Wave (FMCW) frequency source for THz is introduced in the paper. After program analysis, a hybrid system design of DDS and PLL is formed, using the phase-locked loop (PLL) chip HMC703 and the DDS chip AD9910. Through debugging the system, the frequency source output power is above 12 dBm, with spurious signals suppression of -45dBc and power flatness of ±1dB. In addition, the signal frequency of the system can be from minimum 17.1GHz to maximum 19.1GHz.