Novel Voltage-Controlled Oscillators and High Performance Self-Oscillating Mixer Constructed with CMOS Technology

• Main Authors: Chih-Hsiang Peng, 彭志翔
• Other Authors: Yi-Chyun Chiang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/67194518497801317422

碩士 === 長庚大學 === 電子工程研究所 === 94 === This thesis proposes three circuits and they are designed, implemented, and measured. These circuits include two complementary simplified cross–coupled VCOs and a self–oscillating mixer fabricated in TSMC 0.18 μm 1P6M CMOS process. The Ku–band oscillator at the center frequency of 15 GHz associated with about –5 dBm output power. Measured phase noise is –103.11 dBc/Hz at 1 MHz offset. The Ku–band VCO achieves the FOM of –178.2 dBc/Hz. The dual–band VCO core draws 2 mA of current from 1.5 V power supply voltage. Measured phase noise at 1 MHz offset is –117.94 dBc/Hz and –111.09 dBc/Hz in the 2.14 GHz and 4.5 GHz band. The dual–band VCO achieves FOMs of –179.8 and –179.4 dBc/Hz, respectively. The conversion gain of the self–oscillating mixer (SOM) is about 6 dB at 9.2 GHz RF frequency. Measured LO phase noise is –135.6 dBc/Hz at 1 MHz offset. The SOM achieves the FOM of –198.609 dBc/Hz.