A New Monolithic Ka-Band Filter-Based Voltage-Controlled Oscillator Using 0.15 mu m GaAs pHEMT Technology

作者：Chang Chih Lin^*; Tseng Chao Hsiung; Chang Hong Yeh

来源：IEEE Microwave and Wireless Components Letters, 2014, 24(2): 111-113.

DOI：10.1109/LMWC.2013.2290224

• Combline filter
• filter-based microwave oscillator
• GaAs
• monolithic microwave integrated circuit (MMIC)
• pHEMT
• voltage-controlled oscillator (VCO)

This letter presents a fully monolithic Ka-band filter-based voltage-controlled oscillator (VCO) with the 0.15 mu m GaAs pseudomorphic high-electron-mobility transistor (pHEMT) as the active device. A three-pole combline bandpass filter is treated as a frequency stabilization element of the feedback oscillator to achieve a low phase-noise performance. The developed VCO has a frequency tuning range of 37.608-38.06 GHz, and in this frequency rage the calibrated output power is from 6.324 dBm to 10.46 dBm. The phase noise measured at 37.608 GHz is -112.31 dBc/Hz at 1 MHz offset frequency, and its corresponding figure-of-merit (FOM) is -182.7 dBc/Hz.

• 出版日期2014-2
• 单位中央民族大学