Modulating Impedance States for Manipulating Radio-Frequency Transmissions

Shih-Chieh Chen^1*, Shih-Chieh Chen², Yu-Tao Yang³, Yun-Chien Tseng¹, Der-Hsien Lien¹

¹Institute of Electronics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
²Institute of Pioneer Semiconductor Innovation, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
³trategic Technology Exploration Platform, MediaTek, San Jose, USA

* Presenter:Shih-Chieh Chen, email:twbeatsoul.ee10@nycu.edu.tw

We present a radio-frequency (RF) switch that controls high-frequency signal transmission through resistance modulation. The core principle relies on adjusting the memristor’s resistance states to precisely regulate high-frequency signal flow. Upon applying voltage, the RF switch allows signal transmission in the low-resistance state (LRS), while effectively blocking and reflecting the signal in the high-resistance state (HRS). Using an equivalent circuit model, we calculated the resistance in the LRS and the capacitance in the HRS, from which we derived an exceptionally high cutoff frequency, demonstrating the significant potential of this mechanism in high-frequency signal control. Additionally, by modulating the resistance, we can flexibly and effectively manage signal transmission and isolation, offering new insights into the physical phenomena of high-frequency transmission. Experimental results show that the device maintains stable and consistent performance under various operating conditions, indicating its potential for further development in high-frequency communications.

Keywords: RF switch, memristor, signal transmission