Scholarlink

In this article, a miniaturized frequency and polarization reconfigurable fractal antenna (FPRFA) is proposed using Koch curve geometry. A hexagonal fractal geometry-based ring with gaps and a partial ground plane is first designed for proper impedance matching and wideband circular polarization (CP). Two PIN diodes are integrated into the antenna for reconfiguration characteristics. The patch element is printed on a substrate (Roger RT/Duroid 5880) to design the fractal antenna with dimensions 32 × 30 × 1.6 mm3. It has three measured frequency bands and these bands are Case I, 2–8 GHz (120%); Case II, 2.81–7.81 GHz (94.2%); and Case III, 3.6–6.5 GHz (57.4%). Thus, the impedance bandwidth (IBW) of the proposed antenna provides continuous wideband frequency coverage from 2 to 8 GHz (120%). The simulated AR is below 3 dB over 2.58 to 7.43 GHz (96.9%) and 2.89 to 7.05 GHz (83.7%) for the LHCP modes (Case I) and RHCP modes (Case II), respectively. A peak realized gain of 5.75, 5.41, and 4 dBi is achieved at 6.4, 6.7, and 6 GHz for Case I, Case II, and Case III, respectively. The minimum occupying area, the percentage of IBW, ARBW, and the realized gain of the proposed antenna are much superior to the recently reported antennas, which makes it suitable for S and C-band applications. The proposed antenna is compact; therefore, it can be used as an array element.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Design of Hybrid Reconfigurable Hexagonal Koch Fractal Antenna for Wideband Applications

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Khushbu Patel,
  • Santanu Kumar Behera

摘要

In this article, a miniaturized frequency and polarization reconfigurable fractal antenna (FPRFA) is proposed using Koch curve geometry. A hexagonal fractal geometry-based ring with gaps and a partial ground plane is first designed for proper impedance matching and wideband circular polarization (CP). Two PIN diodes are integrated into the antenna for reconfiguration characteristics. The patch element is printed on a substrate (Roger RT/Duroid 5880) to design the fractal antenna with dimensions 32 × 30 × 1.6 mm3. It has three measured frequency bands and these bands are Case I, 2–8 GHz (120%); Case II, 2.81–7.81 GHz (94.2%); and Case III, 3.6–6.5 GHz (57.4%). Thus, the impedance bandwidth (IBW) of the proposed antenna provides continuous wideband frequency coverage from 2 to 8 GHz (120%). The simulated AR is below 3 dB over 2.58 to 7.43 GHz (96.9%) and 2.89 to 7.05 GHz (83.7%) for the LHCP modes (Case I) and RHCP modes (Case II), respectively. A peak realized gain of 5.75, 5.41, and 4 dBi is achieved at 6.4, 6.7, and 6 GHz for Case I, Case II, and Case III, respectively. The minimum occupying area, the percentage of IBW, ARBW, and the realized gain of the proposed antenna are much superior to the recently reported antennas, which makes it suitable for S and C-band applications. The proposed antenna is compact; therefore, it can be used as an array element.