用Sonnet EM模拟超导亚毫米波滤波器和传输线的辐射损耗
Simulating the radiation loss of superconducting submillimeter wave filters and transmission lines using Sonnet EM
摘要：
超导谐振器和传输线是毫米-亚毫米天文学集成电路的基本组成部分。电路的辐射损耗的精确仿真对于这些电路的设计至关重要，因为辐射损耗随频率增加而增加，从而可能使系统性能恶化。在这里，我们展示了一个分层的2.5维矩量法模拟器Sonnet EM，使准确模拟亚毫米波共面谐振器和直共面波导（CPW）的辐射谐振行为。的Sonnet模拟同意以及通过共面谐振滤波器在374.6 GHz的传输的测量。我们的Sonnet分层利用无损衬底下面的人工有损层来吸收辐射，并且我们使用共同校准的内部端口进行去嵌入。有了这种类型的分层，Sonnet可以用来模拟超导毫米-亚毫米波电路，即使辐射损耗是一个潜在的问题。
英文摘要：
Superconducting resonators and transmission lines are fundamental building blocks of integrated circuits for millimeter-submillimeter astronomy. Accurate simulation of radiation loss from the circuit is crucial for the design of these circuits because radiation loss increases with frequency, and can thereby deteriorate the system performance. Here we show a stratification for a 2.5-dimensional method-of-moment simulator Sonnet EM that enables accurate simulations of the radiative resonant behavior of submillimeter-wave coplanar resonators and straight coplanar waveguides (CPWs). The Sonnet simulation agrees well with the measurement of the transmission through a coplanar resonant filter at 374.6 GHz. Our Sonnet stratification utilizes artificial lossy layers below the lossless substrate to absorb the radiation, and we use co-calibrated internal ports for de-embedding. With this type of stratification, Sonnet can be used to model superconducting millimeter-submillimeter wave circuits even when radiation loss is a potential concern.
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