Cylindrical Tightly Coupled Dipole Array Antenna
| Autor: | Hakjune Lee, Minyoung Yoon, Sangwook Nam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 19, Iss 2, Pp 122-129 (2019) |
| Druh dokumentu: | article |
| ISSN: | 2234-8409 2234-8395 |
| DOI: | 10.26866/jees.2019.19.2.122 |
| Popis: | A cylindrical tightly coupled dipole array antenna (C-TCDA) based on Munk’s planar TCDA theory, the elements of which are placed on the surface of a cylinder, is introduced and analyzed in this study. The explicit field components of the transverse electromagnetic (TEM) waves existing in the C-TCDA for both polarizations are given. Moreover, the embedding impedance characteristics of the C-TCDA are presented and compared with those of planar TCDA. Analysis results show that the C-TCDA has similar impedance characteristics to the planar TCDA and thus can be implemented in a similar manner. The design of a dual-polarized omnidirectional octagonal TCDA, which has a 3.08:1 bandwidth (from 0.73 GHz to 2.25 GHz) with a voltage standing wave radiation (VSWR) of less than 2 and a low gain variation of less than 1.8 dB at broadside for both polarizations, is also proposed. When scanning up to ±30° in the θ-direction, the array operates in the same frequency band with a VSWR of less than 2.05 and a low gain variation of less than 2 dB for both polarizations. |
| Databáze: | Directory of Open Access Journals |
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