Layanan journal yang disediakan oleh Perpustakaan Universitas Gunadarma
| Judul Artikel | : | Pattern Synthesis of the Offset Reflector Antenna System with Less Complicated Phased Array Feed |
|---|---|---|
| Judul Terbitan | : | IEEE Transactions on Antennas And Propagation |
| ISSN | : | 0018-926X |
| Bahasa | : | ENG |
| Tempat Terbit | : | New York |
| Tahun | : | 0000 |
| Volume | : | Vol. 42 Issue 2 0000 |
| Penerbit | : | Electrical and Electricity Engineers |
| Frekuensi Penerbitan | : | 12 x a year |
| Penulis | : | Dau-Chyrh Chang, Member, IEEE, Chang-Nan Hu, Chia-I Hung and Ko-Tai Ho |
| Abstraksi | : | The performance degradation of an offset reflector antenna with off-axis scanning feed and distorted reflector surface can be improved by using a phased array feed. Generally, both analog attenuators and phase shifters are used in phased array feed. Yet, it seems to make the feed system very complicated. In this paper, a Phase-Only Gradient Search (POGS) algorithm is developed to optimize the performance of offset reflector antenna systems using phased array feed that is equipped with phase shifters only. This technique not only can greatly simplify the complexity of phased array feed, but also can provide the reflector antenna with better antenna gain and sidelobe level control capability. Simulation and experimental results are presented to illustrate the excellent performance of offset reflector, with limited beam scanning capability, can be obtained by using this less complicated phased array feed. performance of reflector antenna, in this paper, a Phase-Only Gradient Search (POGS) algorithm is developed to optimize the performance for this hybrid reflector/array antenna system. Only phase excitations of phased array feed are changed by this approach, therefore, the complexity, cost and weight of feed network will be greatly reduced. Also, by this POGS technique, the offset reflector antenna can achieve better performance in sidelobe level suppression. |
| Kata Kunci | : | |
| Lokasi | : | p.240 |
| Terakreditasi | : | belum |