An SICL-Excited Wideband Circularly Polarized Cavity-Backed Patch Antenna for IEEE 802.11aj (45 GHz) Applications

作者：Yang, Tian Yang^*; Hong, Wei^*; Zhang, Yan^*

来源：IEEE Antennas and Wireless Propagation Letters, 2016, 15: 1265-1268.

DOI：10.1109/LAWP.2015.2504452

• Bandwidth
• Antenna measurements
• Gain
• Feeds
• Impedance
• Resonant frequency
• Patch antennas
• wideband
• Axial ratio (AR)
• backed-cavity
• circular polarization (CP)
• microstrip patch antenna
• substrate integrated coaxial line (SICL)

A wideband circularly polarized cavity-backed patch antenna excited by substrate integrated coaxial line (SICL) is proposed in this letter. The antenna is composed of two corner truncated rectangular patches, two L-shaped patches, a backed cavity, and an I-shaped feed network. The four patches and the feed network generate a circularly polarized radiation pattern in a sequential-rotation method. The backed cavity is used to prevent surface wave and increase the directivity. The achieved IARI < 3 dB bandwidth is 15.5% (41.5 similar to 48.5 GHz). The measured vertical bar S-11 vertical bar < 15 dB impedance bandwidth is 14.65% (41.7 similar to 48.3 GHz). The peak gain is 8.9 dBi, and the 3-dB gain bandwidth is 17.5% (41.5 similar to 49.5 GHz). The measurements are in agreement with the simulations.

• 出版日期2016
• 单位东南大学