Presentation Information
[9a-N204-6]Integrated Terahertz Beam-steering Based on Injection-locked Resonant Tunneling Diodes and Silicon Waveguide Platform
〇(P)Weijie Gao1, Nguyen Ngo1, Daiki Ichikawa1, Yuta Inose1, Shuichi Murakami2, Yoshiharu Yamada2, Hidemasa Yamane2, Yosuke Nishida3, Safumi Suzuki4, Masayuki Fujita1 (1.Osaka Univ., 2.ORIST, 3.ROHM. Co. Ltd, 4.Inst. Sci. Tokyo)
Keywords:
Terahertz beam-steering antenna,Resonant tunneling diodes,Silicon photonics
Terahertz beamformers are vital for future wireless systems, but agile beam steering at THz frequencies is hindered by the lack of compact, low-loss, and tunable components. We present a 300-GHz electronically beam-steerable antenna based on resonant tunneling diodes (RTDs) integrated with a silicon effective-medium waveguide platform. Two subwavelength-spaced waveguides, each terminated by a rod antenna and driven by an injection-locked RTD oscillator, enable dynamic phase control via bias tuning. A 3-dB power divider and directional couplers ensure coherent operation. The antenna achieves a ±20° beam-steering range, marking the first demonstration of active electronic THz beam steering using RTD-based phased arrays. This work introduces a scalable, low-power beamforming solution for future 6G, sensing, and imaging applications.