التفاصيل البيبلوغرافية
| العنوان: |
Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas. |
| المؤلفون: |
Jang, Wook, Jeon, Yeong-geun, Maeng, Han-jun, Kim, Jongyeong, Kim, Dongho |
| المصدر: |
Applied Sciences (2076-3417); Nov2021, Vol. 11 Issue 22, p11005, 12p |
| مصطلحات موضوعية: |
ANTENNAS (Electronics), DIRECTIONAL antennas, SCANNING systems |
| مستخلص: |
Featured Application: A new beam scanning method of FPC antennas is proposed, validated by fabrication and measurements. A new beam scanning method of a Fabry–Perot cavity (FPC) antenna is proposed. To obtain high gain in a target direction with a reduced sidelobe level (SLL), we devised a tapered partially reflective surface (PRS) as a superstrate. Moreover, to attain various beam scanning directions, a phase-controllable artificial magnetic conductor (AMC) ground plane with a broad reflection phase range and high reflection magnitudes was introduced. In the proposed method, a new formula to satisfy an FP resonance condition in a cavity for a scanned beam is also suggested. According to the formula, the FPC antenna can precisely scan the main beam in designed target directions with well-maintained high gain, which has been hardly achievable. In addition, our method demonstrates the potential of electrical beam-scanning antennas by employing active RF chips on the AMC cells. To validate the method, we fabricated a prototype FPC antenna for a scanned beam at θ = 30°. Furthermore, we conducted an additional simulation for a different beam scanning angle as well. Good agreement between the expected and experimental results verifies our design approach. [ABSTRACT FROM AUTHOR] |
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