Design of a Low-Phase-Noise Ka-Band GaAs HBT VCO

作者：Zhang, Jincan^*; Liu, Min; Zhang, Liwen; Wang, Jinchan; Liu, Bo

来源：Journal of Circuits, Systems, and Computers, 2019, 28(10): 1950174.

DOI：10.1142/S0218126619501743

• Ka-band
• voltage-controlled oscillator
• low-phase noise
• push-push VCO
• cross-coupled VCO

In this paper, the study of a Ka-band GaAs HBT VCO is reported with particular emphasis on achieving low-phase noise while using direct coupled varactor. A push-push cross-coupled VCO configuration is employed to achieve high oscillation frequency and low-phase noise. The measured oscillation bandwidth spans from 30.2 to 28.6 GHz with a tuning range of 1.6 GHz, while the phase noise at 1 MHz of frequency offset from the carrier at 29.3 GHz is -111.5 dBc/Hz. The VCO consumes 28.2 mW from 3 V supply and occupies an area of 0.82 mm x 0.62 mm. The FOM of the VCO achieves -186.3 dBc/Hz.

• 出版日期2019-9
• 单位河南大学