## Abstract In this paper, we propose a novel design for enhancing the directivity and port isolation of a dual‐frequency dual‐polarization (DFDP) microstrip antenna by using metamaterial superstrates and substrates. To enhance the directivity of this without a complex feed network, we first design
Design of a dichroic surface for dual-frequency radioastronomical observations
✍ Scribed by G. Manara; A. Monorchio; A. Talarico; R. Mittra
- Book ID
- 101268382
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 148 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
An FDTD near-to-far-field transformation technique using an efficient recursi¨e algorithm, the Goertzel algorithm, is proposed. This method is memory efficient, and is also time efficient if the number of obser¨ation frequencies is small. The method is applied to compute the radiation patterns of an annular ring DR antenna.
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