Reconfigurable contour beam reflector antennas using adjustable subreflector and adjustable single feed
✍ Scribed by Wilhelmus H. Theunissen; Hwan-Sik Yoon; Gregory N. Washington; Walter D. Burnside
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 659 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
pend on the iteration number, and more precisely, the size of the smallest shape. In fact, the electromagnetic field sees resonant conditions for a set of geometrical and physical parameters, and more precisely, the size of several levels of square microstrip resonators. That physical remark will be useful, and will help us to develop a new model for the quasifractal resonator.
5. CONCLUSION
In this letter, we show that, by using the self-similarity procedure to build fractal figures, we can obtain a multitude of resonant frequencies due to the encasing shape of a square patch microstrip resonator. This property can be used with success to elaborate filters or wide frequency band matching loads for microwave integrated circuits by coupling the set of resonant frequency spectra of each planar square resonator. A three-dimensional finite-difference method applied to a harmonic forced source describes with enough accuracy the frequency electromagnetic behavior. Unfortunately, the CPU time is prohibitive, and another method to simulate this physical system must be used. At the present time, the transmission-line model for a microstrip resonator only works very well in the lowest part of frequency spectrum, and improvements must be realized.