A wide locking range (LR) injection locked frequency tripler (ILFT) based on a dual-band voltage controlled oscillator (VCO) is proposed in this Letter. By rationally designing the transformer parameters, the VCO can easily realise the adjacent dual-band operating characteristics. The ILFT has dual LRs which can easily overlap each other at a fixed bias. A subharmonic signal is also injected through the transformer for frequency locking. A wide LR of 27.1% from 69 to 90.6 GHz at an injection power of 0 dBm is achieved whereas the tripler only consumes 5.88 mW under a 0.6 V supply voltage.

中文翻译：

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基于双频VCO的宽锁定范围频率三倍频器

在这封信中，提出了一种基于双频压控振荡器（VCO）的宽锁定范围（LR）注入锁定频率三倍频器（ILFT）。通过合理设计变压器参数，VCO可以轻松实现相邻的双频工作特性。ILFT具有双LR，它们可以容易地以固定偏置彼此重叠。还通过变压器注入次谐波信号以锁定频率。在0 dBm的注入功率下，从69至90.6 GHz的宽LR为27.1％，而三倍频器在0.6 V电源电压下仅消耗5.88 mW。