A new electronically tunable quadrature oscillator is presented using a biquad band pass filter. The new band pass filter is designed using two dual X second-generation multi-output current conveyors (DX-MOCCIIs), two grounded capacitors, two grounded resistors and one NMOS transistor working in the triode region. It is used to design a four-phase voltage and three-phase current output quadrature oscillator simultaneously. The frequency of the oscillator can be tuned externally through the MOS gate voltage without affecting the condition of oscillation. The phase noise, frequency stability and nonideality analysis are given. The functionality of the oscillator circuit has been confirmed by SPICE simulation and also hardware realization using commercially available IC AD844.

中文翻译：

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使用 DX-MOCCII 的电子可调谐混合模式正交振荡器

提出了一种使用双二阶带通滤波器的新型电子可调谐正交振荡器。新的带通滤波器设计使用两个双 X 第二代多输出电流传输器 (DX-MOCCII)、两个接地电容器、两个接地电阻器和一个工作在三极管区域的 NMOS 晶体管。用于设计同时输出四相电压和三相电流的正交振荡器。振荡器的频率可以通过 MOS 栅极电压从外部调节，而不影响振荡条件。给出了相位噪声、频率稳定性和非理想性分析。振荡器电路的功能已通过 SPICE 仿真以及使用市售 IC AD844 的硬件实现得到确认。