Abstract
Two types of dual-spiral slot antennas characterized by their simple feed are studied; one is a bidirectional radiation type (Bi-DSS) and the other is a undirectional type (Uni-DSS). The radiation characteristics of the Bi-DSS are evaluated using the numerically determined magnetic current distribution. It is found that a travelling wave magnetic current distribution becomes dominant for a particular range of slot-arm lengths, contributing to the radiation of a circularly polarised wave. On the basis of the investigation of the Bi-DSS radiation mechanism, the Uni-DSS antenna with a triplate configuration is designed. Formation of a circularly polarised, unidirectional beam is experimentally realised. A 4 × 8 Uni-DSS array antenna with a simple feeding system is constructed, achieving an aperture efficiency of 60% over a frequency range of 11.6 GHz to 12.0 GHz.
| Original language | English |
|---|---|
| Pages (from-to) | 32-36 |
| Number of pages | 5 |
| Journal | IEE Proceedings H: Microwaves, Antennas and Propagation |
| Volume | 138 |
| Issue number | 1 |
| Publication status | Published - 1991 Feb |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Engineering(all)
Cite this
Dual-spiral slot antennas. / Hirose, Kazuhide; Nakano, H.
In: IEE Proceedings H: Microwaves, Antennas and Propagation, Vol. 138, No. 1, 02.1991, p. 32-36.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dual-spiral slot antennas
AU - Hirose, Kazuhide
AU - Nakano, H.
PY - 1991/2
Y1 - 1991/2
N2 - Two types of dual-spiral slot antennas characterized by their simple feed are studied; one is a bidirectional radiation type (Bi-DSS) and the other is a undirectional type (Uni-DSS). The radiation characteristics of the Bi-DSS are evaluated using the numerically determined magnetic current distribution. It is found that a travelling wave magnetic current distribution becomes dominant for a particular range of slot-arm lengths, contributing to the radiation of a circularly polarised wave. On the basis of the investigation of the Bi-DSS radiation mechanism, the Uni-DSS antenna with a triplate configuration is designed. Formation of a circularly polarised, unidirectional beam is experimentally realised. A 4 × 8 Uni-DSS array antenna with a simple feeding system is constructed, achieving an aperture efficiency of 60% over a frequency range of 11.6 GHz to 12.0 GHz.
AB - Two types of dual-spiral slot antennas characterized by their simple feed are studied; one is a bidirectional radiation type (Bi-DSS) and the other is a undirectional type (Uni-DSS). The radiation characteristics of the Bi-DSS are evaluated using the numerically determined magnetic current distribution. It is found that a travelling wave magnetic current distribution becomes dominant for a particular range of slot-arm lengths, contributing to the radiation of a circularly polarised wave. On the basis of the investigation of the Bi-DSS radiation mechanism, the Uni-DSS antenna with a triplate configuration is designed. Formation of a circularly polarised, unidirectional beam is experimentally realised. A 4 × 8 Uni-DSS array antenna with a simple feeding system is constructed, achieving an aperture efficiency of 60% over a frequency range of 11.6 GHz to 12.0 GHz.
UR - http://www.scopus.com/inward/record.url?scp=0026108450&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026108450&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0026108450
VL - 138
SP - 32
EP - 36
JO - IEE Proceedings H: Microwaves, Antennas and Propagation
JF - IEE Proceedings H: Microwaves, Antennas and Propagation
SN - 0950-107X
IS - 1
ER -