Modulation Transfer between Microwave Beams: Asymptotic Evaluation of Integrals with Pole Singularities near a First-Order Saddle Point

被引:1
作者
Cacciari, Ilaria [1 ]
Ranfagni, Anedio [1 ]
机构
[1] Ist Fis Applicata Nello Carrara, Consiglio Nazl Ric, Via Madonna Piano 10, I-50019 Sesto Fiorentino, Italy
关键词
stochastic modeling; electromagnetic propagation; microwave; delay time; saddle-point method; PROPAGATION; EQUATIONS;
D O I
10.3390/axioms13030178
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Experimental results of delay-time measurements in the transfer of modulation between microwave beams, as reported in previous articles, were interpreted on a competition (interference) between two waves, one of which is modulated and the other is a continuous wave (c.w.). The creation of one of these waves was attributed to a saddle-point contribution, while the other was attributed to pole singularities. In this paper, such an assumption is justified by a quantitative field-amplitude analysis in order to make the modeling plausible. In particular, two ways of calculating field amplitudes are considered. These lead to results that are quantitatively markedly different, although qualitatively similar.
引用
收藏
页数:12
相关论文
共 33 条
[31]  
Toraldo di Francia G., 2014, Metodi Matematici Della Fisica
[32]   USE OF ANNULAR APERTURES TO INCREASE FOCAL DEPTH [J].
WELFORD, WT .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1960, 50 (08) :749-753
[33]  
Zastawniak T., 1991, P TRIESTE 1991 ADRIA, P446