## Abstract This article introduces a miniaturized fourβarm 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 measu
Analysis of thin multioctave cavity-backed slot spiral antennas
β Scribed by Ozdemir, T.; Volakis, J.L.; Nurnberger, M.W.
- Book ID
- 114454996
- Publisher
- The Institution of Electrical Engineers
- Year
- 1999
- Tongue
- English
- Weight
- 962 KB
- Volume
- 146
- Category
- Article
- ISSN
- 1350-2417
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## Abstract Slot antennas with a backing cavity for unidirectional radiation are investigated with the aim of achieving a thin structure capable of reasonably broadband operation. By tuning together the slot length and the cavity crossβsection, a very lowβprofile cavityβbacked slot (CBS) is demonst
The mutual coupling of hemispherical ca¨ity-backed slot ( ) antennas is in¨estigated theoretically. The method of moments MoM is used to find the magnetic currents in the slots rigorously. The currents are then used to find the mutual admittance using the reaction theorem. The results are compared w