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该论文提出了一种使用体声波（BAW）谐振器的1V、2.2GHz压控振荡器（VCO），实现了220MHz的调谐范围。通过优化电路设计克服了BAW谐振器压电耦合系数限制调谐范围的问题，适用于无线频率合成器。
Christophe Billard, Christine Fuchs, Guy Parat, Emeric Defoucaud, Alexandre Reinhardt CEA-LETI-MINATEC, Grenoble, France The frequency stability of integrated oscillators has become an increasingly important issue for the next generation of digital RF transceivers. RF oscillators using high-Q BAW resonators have been demonstrated to provide excellent performance in terms of stability, phase noise and power consumption [1,2]. Nevertheless, the frequency tuning range of BAW oscillators is still limited by the piezoelectric coupling coefficient Kt² of the piezoelectric material which defines the frequency shift between the resonance (series) and anti-resonance (shunt) frequencies of the resonator. The maximum tuning range for such a voltage-controlled oscillator will never exceed this frequency shift [3]. To overcome this limitation, this work presents a broadband BAW resonator/tuned VCO and introduces an oscillator frequency tuning range mechanism based on a fixed negative active capacit
Pierre Vincent, Jean Baptiste David, Ioan Burciu, Jerome Prouvée,