Integrated Ka-Band Transceiver MMIC Chips

The integrated MMIC chips for Ka-band transceiver applications are reported. The reported transceiver chips are the compact integrated wideband upconverter, miniature size integrated upconverter, integrated downconverter, two-stage (0.8 W) and fourstage (1.9 W) power amplifiers. The compact wideband integrated upconverter chip (4.2 mm²) is provided conversion gain of 10-15 dB and sideband suppression above 20 dBc over 23-37 GHz with required LO power between 9-16 dBm. The miniature upconverter chip (2.4 mm²) is achieved the gain of 10-13 dB and sideband suppression above 20 dBc over 27-38 GHz at LO power of 0 dBm. The integrated downconverter chip (2.4 mm²) is measured with conversion gain of 1014 dB, image rejection above 20 dB, and noise figure of 3.5-4.5 dB over 29-35 GHz for LO power between 911 dBm. The two-stage power amplifier is shown the measured small signal gain above 12 dB over 31-36 GHz and saturated power of 0.8 W at 31 GHz. The four-stage power amplifier chip is measured with small signal gain of 20-25 dB over 25-30 GHz and saturated power of 1.9 W at 27 GHz.