A 300-GHz quadrature voltage-controlled oscillator (QVCO) integrated with a pair of mixers based on an InP heterojunction bipolar transistor (HBT) technology has been developed. A super-harmonic coupling technique was applied to generate the quadrature signal in the QVCO. The oscillation frequency tuning range is 24.8 GHz (from 286.1 to 310.9 GHz), and the frequency range maintaining the quadrature operation (within ±10°) is 4.8 GHz (297.2–302.0 GHz). The maximum output power of the QVCO was measured as 0.46 dBm at 286.3 GHz. The measured phase noise is −91.4 dBc/Hz with 10 MHz offset at 294.2 GHz. The integrated QVCO-mixer consumes a dc power of 167.5 mW.

中文翻译：

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具有集成混频器的 300GHz InP HBT 正交 VCO

基于 InP 异质结双极晶体管 (HBT) 技术，集成了一对混频器的 300 GHz 正交压控振荡器 (QVCO) 已被开发出来。应用超谐波耦合技术在 QVCO 中生成正交信号。振荡频率调谐范围为 24.8 GHz（从 286.1 至 310.9 GHz），保持正交工作（±10° 以内）的频率范围为 4.8 GHz（297.2-302.0 GHz）。QVCO 的最大输出功率在 286.3 GHz 下测得为 0.46 dBm。测得的相位噪声为 −91.4 dBc/Hz，在 294.2 GHz 处具有 10 MHz 偏移。集成的 QVCO 混频器消耗 167.5 mW 的直流功率。