Abstract
This paper presents a spherically conformal transmit-array (SCTA) antenna with high gain and 1D steerable beam, which is very favorable for high-speed aircraft applications. The SCTA consists of 5×5 uniform-sized transmit-subarrays (TSA) with five distinct beam directions; and each TSA contains 6×6 square loop as the unit cells of the multi-layer frequency selective surface. When the TSAs are illuminated by a mechanically rotated feed source, the SCTA synthesizes a high-directivity beam according to the TSAs' directions. To achieve good aerodynamic characteristics, a novel spherical topology with strategic array arrangement is proposed. Then, detailed derivations and analyses are conducted to calculate the transmission phases of all the unit cells. To validate the designs, a prototype of the SCTA was fabricated and measured. Experimental results show the designed SCTA achieves a high gain of about 20 dBi and a 1D beam scanning range of ±15°, making it very suitable for aircraft-based wireless communication applications or radar systems.
| Original language | English |
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| Title of host publication | 2025 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2025 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Edition | 2025 |
| ISBN (Electronic) | 9798331525347 |
| DOIs | |
| Publication status | Published - 2025 |
| Externally published | Yes |
| Event | 2025 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2025 - Wuxi, China Duration: 23 Jul 2025 → 26 Jul 2025 |
Conference
| Conference | 2025 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2025 |
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| Country/Territory | China |
| City | Wuxi |
| Period | 23/07/25 → 26/07/25 |
Keywords
- Beam steering
- frequency selective surface
- high gain
- transmit-array
- wireless communication