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基于InGaP-GaAs HBT工艺设计了一款Ku波段推-推式压控振荡器(VCO)微波单片集成电路(MMIC)。采用改进的虚地反馈法对基本振荡单元的奇偶模进行了分析,用谐波平衡法对相位噪声和输出功率进行了优化设计。用ADS软件完成了原理图和电磁场仿真,用Candence Virtuoso完成了版图设计。此VCO MMIC频率覆盖14.5～15 GHz,在2.2 mm×1.2 mm的面积内集成了变容二极管、谐振电路、负阻产生电路,具有体积小、成本低、相位噪声低等特点。在4.2 V单电源电压下,其静态电流为150 mA,典型输出功率为10 dBm,频偏为100 kHz时的单边带相位噪声为-105 dBc/Hz。
A Ku-band push-push voltage-controlled oscillator (VCO) microwave monolithic integrated circuit (MMIC) is designed based on the InGaP-GaAs HBT process. The odd-even mode of fundamental oscillation unit is analyzed by the improved virtual ground feedback method, and the phase noise and output power are optimized by harmonic balance method. Using ADS software to complete the schematic and electromagnetic simulation, Candence Virtuoso completed the layout design. The VCO MMIC frequency coverage of 14.5 ~ 15 GHz, integrated in the 2.2 mm × 1.2 mm area varactor diodes, resonant circuit, negative resistance circuit, with small size, low cost, low phase noise and so on. The quiescent current is 150 mA at a single 4.2 V supply and the typical output power is 10 dBm with single sideband phase noise of -105 dBc / Hz at 100 kHz offset.