Abstract

A switched coupled transmission line (SCTL) method with high Q and flexible structure is proposed for mm-wave VCO to improve tuning range (TR), meanwhile maintaining low phase noise, low power dissipation and zero additional area. This TR extension method is also proved effective in a switched coupled coplanar waveguide (SCCPW) VCO. Fabricated in 45 nm SOI CMOS, the SCTL-VCO achieves 38.74% TR from 39.46 to 58.42 GHz, increased by 29.2% compared to the reference TL-VCO. The SCCPW-VCO achieves 38.83% TR from 38.69 to 57.33 GHz, increased by 31.9% compared to the reference CPW-VCO. The measured phase noise of SCTL-VCO and SCCPW-VCO over the entire frequency tuning range is from \(-\) 106 to \(-\) 116.8 and \(-\) 106.1 to \(-\) 116 dBc/Hz at 10 MHz offset, while the corresponding FOM\(_T\) is from \(-\) 181.7 to \(-\) 192.5 and \(-\) 181.6 to \(-\) 191.5 dBc/Hz, respectively. Each VCO dissipates 8.6–10.8 mW from 0.7 V power supply.

中文翻译：

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适用于5G应用的两个带45nm SOI CMOS的带SCTL和SCCPW的宽调谐范围毫米波VCO

摘要

针对毫米波压控振荡器，提出了一种具有高Q值和灵活结构的开关耦合传输线（SCTL）方法，以提高调谐范围（TR），同时保持低相位噪声，低功耗和零附加面积。这种TR扩展方法在开关耦合共面波导（SCCPW）VCO中也被证明是有效的。SCTL-VCO采用45 nm SOI CMOS制成，从39.46 GHz到58.42 GHz的TR达到38.74％，与参考TL-VCO相比提高了29.2％。SCCPW-VCO从38.69 GHz到57.33 GHz达到了38.83％的TR，与参考CPW-VCO相比增加了31.9％。在整个频率调谐范围内测得的SCTL-VCO和SCCPW-VCO的相位噪声为\（-\） 106至\（-\）  116.8和\（-\）  106.1至\（-\） 在10 MHz偏移时为116 dBc / Hz，而对应的FOM \（_ T \）从\（-\）  181.7至\（ -\）  192.5和\（-\）  181.6至\（-\）  191.5 dBc / Hz。每个VCO从0.7 V电源消耗的功率为8.6–10.8 mW。