An Improved Transient Quasi-Analysis Method for Offset Reflector in Impulse Radiating Antenna Applications

A transient quasi-analytic method is improved to analyze the ofiset re∞ector for impulse radiating antenna (IRA) applications. Physical optic (PO) approximation and analytic time transform (ATT) are utilized to investigate the time domain (TD) radiating characteristics of the ofiset re∞ector. With the appropriate coordinate transformation, the TD far-fleld integral problem can be simplifled to one dimensional angular integral which is independent of the re∞ector's size. In addition, the Fast Fourier Transform (FFT) of impulse responses is compared to the direct frequency domain result, and good agreement is obtained.