[B-1B] Antennas and Propagation B (Antennas general)

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)Candidate for Academic Incentive Award

[B-1B-32] Measurement and Evaluation of Reflectarray Antennas for 300-GHz-Band Near-Field Beam Type Communication

◎Seiki Ono¹, Takashi Tomura¹, Daisuke Yamanaka², Osamu Kagaya² (1. Science Tokyo, 2. AGC Inc.)

Keywords:

Reflectarray antennas,300GHz-band,Near-field,Beam type

The 300-GHz band has attracted significant attention for realizing ultra-high-speed wireless communications; however, challenges such as high propagation loss and limited transmitter output power remain. In this study, a reflectarray antenna was placed in the near-field region to investigate high-efficiency wireless transmission through beam focusing. The measured transmission efficiency S21 at the center frequency was −4.8 dB for an antenna separation of 1 m, showing a difference of 1 dB from the simulated value of −3.8 dB.