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Analysis of microstrip-to-circular-waveguide transitions by a new spatial-images method

✍ Scribed by F. D. Quesada Pereira; P. Vera Castejón; J. L. Gómez Tornero; D. Cañete Rebenaque; J. Pascual García; A. Alvarez Melcon

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
274 KB
Volume
45
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

patterns at 5.23 GHz for the port-1 and port-2 excitations of the antenna with optimal dimensions in this study. Note that the antenna was placed vertically in the anechoic chamber for the measurements, and the receiving antenna is aligned to be parallel to the monopole (1 or 2) under test. That is, the co-polarized component shown in Figure 3 for port-1 excitation is in the direction of ϭ 135°; on the other hand, for the port-2 excitation shown in Figure 4, the co-polarized component is in the direction of ϭ 45°. From the obtained results, it is seen that the copolarized radiation for monopole 1 is orthogonal to that for monopole 2, which provides dual-polarized operation for the proposed antenna. The measured radiation patterns in 2.4-GHz band show similar characteristics with those in the 5.2-GHz bands.

4. CONCLUSION

An integrated dual-band diversity antenna has been proposed and studied. The two ports of the antenna show high isolation and have good impedance matching for frequencies across the 2.4-GHz and 5.2-GHz WLAN bands. The antenna can also provide spatial diversity, which capable of combating multipath fading for WLAN operation.

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