Title :
Steering the beam directions in Terahertz band by frequency sweeping
Author :
Chao Li ; Shichao Li ; Xiaojuan Zhang ; Guangyou Fang
Author_Institution :
Key Lab. of Electromagn. Radiat. & Sensing Technol., Inst. of Electron., Beijing, China
Abstract :
A novel beam scanning antenna in 0.2 Terahertz band based on frequency-scanning grating-reflector was studied in this paper. A bilayer structure is introduced and optimized to improve the diffraction efficiency and to suppress the specular beam. The frequency-controlled beam steering concept was verified by the quasi-optical measurements in 0.2THz band. The measured scanning range is 13.55° over the frequency band 180GHz-220GHz. The proposed antenna can be fabricated easily and has potential applications in THz imaging systems with high frame rate.
Keywords :
beam steering; electromagnetic wave diffraction; reflector antennas; submillimetre wave antennas; terahertz wave devices; THz imaging systems; beam direction steering; beam scanning antenna; bilayer structure; diffraction efficiency; frequency 0.2 THz; frequency sweeping; frequency-controlled beam steering concept; frequency-scanning grating-reflector; high frame rate; quasioptical measurements; specular beam suppression; terahertz band; Antenna measurements; Antennas; Arrays; Beam steering; Diffraction; Gratings; Imaging;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956393
