1.5 GHz电压控制振荡器,使用两极DSBAR滤波器,具有3%调谐带宽

I. Avramov, Stephen R Gilbert, Richard C. Ruby
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引用次数: 0

摘要

提出了一种新型的低GHz功率高效压控振荡器(VCO),具有良好的相位噪声、高频率精度和稳定性。VCO的核心是最近报道的一种新型微型两极解耦堆叠体声谐振器(DSBAR)滤波器。凭借其在1db带宽上的180度单相转变,线性相位和最大1db插入损耗,它在45 MHz(≈3%)的调谐带宽上提供稳定的单模工作,并且在100mw及更高的入射功率水平下工作时可以忽略不计散热。1.55 GHz实验室VCO样机工作在5V供电电压、50 mA供电电流、15 dBm输出功率和>13%的效率下,分别在1 KHz载波偏移和热噪声区域抑制了- 83和< - 180 dBc/Hz的相位噪声。采用级联DSBAR滤波器的压控振荡器进一步降低了相位噪声。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
1.5 GHz voltage controlled oscillator with 3% tuning bandwidth using a two-pole DSBAR filter
First results on a novel power efficient voltage controlled oscillator (VCO) in the lower GHz range, featuring excellent phase noise, high frequency accuracy and stability are presented. The heart of the VCO is a novel miniature two-pole De-coupled Stacked Bulk Acoustic Resonator (DSBAR) filter recently reported. With its single 180 deg. phase transition over the 1 dB bandwidth, linear phase and maximum 1 dB insertion loss it provides stable single-mode operation over 45 MHz (≈3%) of tuning bandwidth and negligible heat dissipation when operated at incident power levels of 100 mW and higher. The 1,55 GHz laboratory VCO prototypes operate at 5V supply voltage, 50 mA supply current, 15 dBm of output power and >13% efficiency demonstrating −83 and <−180 dBc/Hz phase noise suppression at 1 KHz carrier offset and in the thermal noise region, respectively. VCO with cascaded DSBAR filters for further phase noise reduction are also demonstrated.
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