CAJ | 학술논문

微带天线具有许多优点,在许多领域得到广泛应用。为精确设计微带天线,需了解描述天线性能的电参数。介绍了一种数值分析方法——时域有限差分法（FDTD）,从Maxwell旋度方程出发推导FDTD差分格式计算过程,总结出分析电磁问题的一般步骤,并采用FDTD分析了一款典型的微带天线。和电磁仿真软件XFDTD仿真结果相比较,可以看出FDTD计算结果与软件仿真结果吻合得很好。
미대천선구유허다우점,재허다영역득도엄범응용。위정학설계미대천선,수료해묘술천선성능적전삼수。개소료일충수치분석방법——시역유한차분법（FDTD）,종Maxwell선도방정출발추도FDTD차분격식계산과정,총결출분석전자문제적일반보취,병채용FDTD분석료일관전형적미대천선。화전자방진연건XFDTD방진결과상비교,가이간출FDTD계산결과여연건방진결과문합득흔호。
The microstrip antenna has a lot of merits,so it has been widely used in various fields.In order to design the microstrip antenna exactly,the electric parameters that describes the antenna performance are need to be comprehended.This paper introduces a kind of numerical value analysis method——finite-difference time-domain(FDTD) method,deduces the calculation course of FDTD difference format according to Maxwell rotation equations,and sums up the generic steps of analyzing electromagnetism problem,and uses FDTD to analyze a typical microstrip antenna.The result is compared with the simulation result of electromagnetism simulation software XFDTD,it can be seen that the calculation result of FDTD is consistent with the software simulation result.