Dual-polarised T/R antenna system suitable for FMCW altimeter radar applications
IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION, cilt.153, sa.5, ss.407-412, 2006 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 153 Sayı: 5
- Basım Tarihi: 2006
- Doi Numarası: 10.1049/ip-map:20050351
- Dergi Adı: IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.407-412
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
The authors propose a dual-polarised T/R antenna system that utilises a 3 dB 90 degrees hybrid coupler and a dual-polarised antenna. From the practical point of view the T/R isolation performance of this system can be made better than that of systems using circulators. There is no power loss both in transmit and receive modes compared to 6 dB total loss in a conventional system using a hybrid coupler and a single polarised antenna. To validate the system performance, a sample structure is realised for a C band application. The presented system analysis and measurements are for an above-ground application. The measurements show good agreement with the theoretical expectations.