In this paper, the design methodology and layout considerations of a multiphase Rotary Travelling-Wave Voltage-Controlled Oscillator (RTW-VCO) and a high gain three-stage Power Amplifier (PA) for a phased-array transmitter application are presented. Using a 0.25 μm BiCMOS process, the fabricated VCO gives access to 8 different phases in steps of 45 degrees and it achieves a tuning range of 1 GHz for measured output power of -6.5 dBm at 17 GHz. The three-stage PA shows 25 dB of gain for 16-20 GHz of bandwidth, and it achieves saturated output power of 7.5 dBm.

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Keywords BiCMOS, high-frequency, phased-array, power amplifier, rotary travelling-wave oscillator
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Conference IEEE Bipolar/BiCMOS Circuits and Technology Meeting, BCTM 2015
Ansari, K.T. (Kimia T.), Plett, C, & Gamand, P. (Patrice). (2015). Ku-band integrated building blocks for phased-array transmitter design in SiGe:C BiCMOS. Presented at the IEEE Bipolar/BiCMOS Circuits and Technology Meeting, BCTM 2015. doi:10.1109/BCTM.2015.7340587