Electrooptic field visualization and its application to millimeter-wave and terahertz antenna characterization
Electrooptic field visualization and its application to millimeter-wave and terahertz antenna characterization
复制标题
电光场可视化及其在毫米波和太赫兹天线表征中的应用
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Hisatake
中科院分区：
文献类型：
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作者：
S. Hisatake
我们提出了两个光子学为基础的毫米波和太赫兹波的可视化系统，自外差测量系统和异步测量系统，天线特性。在自外差测量系统中，射频信号由一个单载波光电二极管通过光混频产生，并提供给被测天线。另一方面，异步测量系统使我们能够测量的幅度和相位分布的辐射电磁（EM）近场发射的自振荡设备，而无需拆卸的天线。在这两种系统中，无偏振电光频率转换技术是实现稳定、宽频带、对电磁场无干扰测量的关键。
We present two photonics-based millimeter and terahertz wave visualization systems, self-heterodyne measurement system and asynchronous measurement system, for antenna characterization. In the self-heterodyne measurement system, the RF signal is generated by photomixing using a uni-traveling-carrier photodiode and supplied to antenna under test. On the other hand, asynchronous measurement system enables us to measure the amplitude and phase distribution of the radiative electromagnetic (EM) near-field emitted from self-oscillating devices without detaching the antennas. In the both systems, the non-polarimetric electrooptic frequency conversion technique is the key for stable and wideband measurement with low invasiveness to the EM field.