The effect of dielectric loading in EC-SCPW on forwardcoupler characteristics has been studied. The dielectric loading increases the coupling coefficient and the frequency bandwidth, thus finding application in the propagation of narrow pulses. The size of the device can also be reduced considerably
Compact cavity-backed four-arm slot spiral antenna
โ Scribed by Min-Hua Chen; Shun-Shi Zhong; Sai-Qing Xu; Li-Xian Li
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 268 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
This article introduces a miniaturized fourโarm slot spiral antenna on a ceramic dielectric substrate with a thin back cavity. The simulated and experimental results show that the proposed antenna is of good circular polarization and radiation pattern properties at 1.561 GHz, with measured gain of more than 6 dB at the zenith, and more than โ4 dB for above 5ยฐ elevation angle. ยฉ 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2141โ2143, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24534
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