Please use this identifier to cite or link to this item:
https://doi.org/10.1109/8.704814
DC Field | Value | |
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dc.title | Radio wave propagation along mixed paths through a four-layered model of rain forest: an analytic approach | |
dc.contributor.author | Li, L.-W. | |
dc.contributor.author | Yeo, T.-S. | |
dc.contributor.author | Kooi, P.-S. | |
dc.contributor.author | Leong, M.-S. | |
dc.date.accessioned | 2014-06-17T06:53:37Z | |
dc.date.available | 2014-06-17T06:53:37Z | |
dc.date.issued | 1998-07 | |
dc.identifier.citation | Li, L.-W., Yeo, T.-S., Kooi, P.-S., Leong, M.-S. (1998-07). Radio wave propagation along mixed paths through a four-layered model of rain forest: an analytic approach. IEEE Transactions on Antennas and Propagation 46 (7) : 1098-1111. ScholarBank@NUS Repository. https://doi.org/10.1109/8.704814 | |
dc.identifier.issn | 0018926X | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/62671 | |
dc.description.abstract | This paper presents a novel full-wave analysis of the radio waves that are excited from a dipole antenna located in the trunk layer and propagate inside a four-layered forest medium. The dyadic Green's functions for the four-layered geometry are applied first to derive the integral expression of the electric fields. The closed form of the electric fields is then obtained by using the quasi-static approximation, saddle-point technique, and branch-cut integrations in the complex plane and, hence, expressed in terms of direct waves, multiple reflected waves, and lateral waves. Two kinds of images, i.e., the quasi-dynamic and complex images, are considered in the integration in the complex plane. Among those waves excited by a dipole antenna in the four-layered medium, it is shown theoretically and numerically that the lateral wave along the upper-side air-canopy interface plays a role of dominant modes. Propagation mechanism of other lateral waves due to the air-canopy, canopy-trunk, and trunk-ground interfaces is also discussed and analyzed so as to gain an insight into the wave characteristics. Transmission losses of the lateral waves are calculated numerically. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/8.704814 | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | ELECTRICAL ENGINEERING | |
dc.description.doi | 10.1109/8.704814 | |
dc.description.sourcetitle | IEEE Transactions on Antennas and Propagation | |
dc.description.volume | 46 | |
dc.description.issue | 7 | |
dc.description.page | 1098-1111 | |
dc.description.coden | IETPA | |
dc.identifier.isiut | 000075214600019 | |
Appears in Collections: | Staff Publications |
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