The contrawound toroidal helix antenna with constant current is examined; it has an omnidirectional pattern in the toroid plane. Radiation resistance is deriยจed for the dipole mode, and results are ยจalidated by moment-method calculations. The radiation Qs of these antennas are greater than one milli
Circularly-Polarized Wide Slot Antenna Loaded With a Parasitic Patch
โ Scribed by Jeen-Sheen Row; Shiao-Wen Wu
- Book ID
- 115520043
- Publisher
- IEEE
- Year
- 2008
- Tongue
- English
- Weight
- 660 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0018-926X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract Frequency tunable annularโring slot antennas with circularly polarization (CP) operation are studied in this article. The annularโring slot antenna operates at one fullโwavelength resonant mode and it is excited by an Lโshaped coupling strip with a reactive loading. It is found that the
Figure 10 Electric field, -polarized, backscattered from a sinusoidally deformed DCR with p s 0.1. Dashed line: h s 0; solid line: h s 0.2 tive or destructive way, thus justifying the oscillations present in Figure 10. As a final observation, we note that, by increasing the DCR dimensions, the lobe
## Abstract A circularly polarized (CP) composite antenna is studied in this article. The antenna unit is composed of a CP curl antenna and a CP omniโdirectional antenna with three pairs of tilted parasitic elements. Reasonable agreement between simulation and measurement is obtained. The proposed