搜索结果: 1-4 共查到“电子科学与技术 VCO”相关记录4条 . 查询时间(0.258 秒)
基于FPGA的K波段VCO宽带线性校正
开环线性校正 VCO FPGA
2016/5/26
为解决K波段宽带线性校正器件复杂、成本高、调试难等问题，提出了基于FPGA的VCO开环线性校正方法。利用VCO电调特性的开环线性校正原理，采用FPGA控制D/A芯片对VCO的电调特性进行开环宽带线性校正，同时通过控制FPGA产生的时钟，可以产生任意时宽的线性调频连续波。试验表明在带宽为400MHz时的非线性度小于0.1%。最后测试数据表明，本方案满足系统指标的。
提出了一种基于准MMIC技术的Ku波段宽带压控振荡器. 该电路采用MMIC芯片和外加高Q值的超突变结变容管的方式，实现了覆盖整个Ku波段的超宽带的振荡信号输出. 通过将MMIC技术与混合集成技术相结合的方法，大大降低了调试难度，更重要的是，克服了通用pHEMT MMIC工艺难于兼容高Q值的变容管对超宽带设计VCO的限制，在相位噪声和调谐频率线性度方面都有较大改善. 该方法为微波、毫米波压控振荡器的...
Multi Band Frequency Synthesizer Based on ISPD PLL with Adapted LC Tuned VCO
GSM/DCS/DECT/UMTS/WiMax ISPD PLL Multi-Band
2010/2/2
The 4G front-end transceiver needs a high
performance which can be obtained mainly with an optimal
architecture and a multi-band Local Oscillator. In this study, we
proposed and presented a new arc...
A VCO with Harmonic Suppressed and Output Power Improved Using Defected Ground Structure
Voltage-controlled oscillator Harmonic suppressed Defected ground structure
2010/12/7
In this paper, a novel defected ground structure (DGS) is proposed for suppressing harmonic and increasing the output power of a voltage-controlled oscillator (VCO) in microwave circuits. The DGS is f...