Improvement of FDTD calculation accuracy for printed bent dipole and loop antennas
Improvement of FDTD calculation accuracy for printed bent dipole and loop antennas
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发表时间：
2012-12
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通讯作者：
W. Akaishi;T. Uno;T. Arima
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作者：
W. Akaishi;T. Uno;T. Arima
近年来，时域有限差分(FDTD)方法被广泛应用于印刷天线的分析。由于采用FDTD方法可以方便地对复杂形状的模型进行分析。然而，众所周知，当需要非常精确的结果来分析介质衬底上天线的阻抗特性时，需要非常小的单元。提出了提高直形印刷天线计算精度的方法[2]。该方法利用准静态场来提高计算精度。在本文中，我们将准静态近似推广到包括环形天线在内的弯曲天线，并证明了计算精度的提高。
In recent years Finite Difference Time Domain (FDTD) method [1] is widely used for printed antenna analysis. Because a complicated-shaped model is easily analyzable by using FDTD method. However, it is well known that quite small cell is required when an extremely accurate result is needed for analyzing impedance characteristics of antennas on dielectric substrate. The improving calculation accuracy method has been proposed for straight shape printed antenna [2]. In the method, quasi-static field was used to improve calculation accuracy. In this paper, we expand the quasi-static approximation to bent antennas including loop antenna and we will demonstrate improvement of calculation accuracy.