A High-power High Harmonic Suppression Frequency-doubled Power Amplifier Module operating in 20-30 GHz

In this work, we report on the design and validation of a 20-30 GHz frequency-doubled power amplifier module. The output power of the module is improved by using planar power combining structure. The LO and RF signal filters with high out-of-band suppression are adopted to improve the harmonic suppression index of the module. The module provides better than 26 dBm output power in the whole frequency band, and the harmonic spurious suppression ratio is better than 30 dBc.