無外部電容之近場無線電源積體電路

現今無線傳能技術廣泛應用於生醫電子及RFID等積體電路系統，利用無線方式傳遞電能與訊號。縮小接收端元件尺寸為目前許多研究努力的方向[1]-[5]。而隨著製程進步，電晶體耐壓因閘極厚度下降而減低，如何在次微米製程下設計可靠的電源積體電路也是一大挑戰。本研究提出一無外接電容之近場無線電源積體電路，除了傳能耦合線圈外，無其他外接元件，並提升了可靠度。測試晶片以台積電0.18μm 1P6M標準製程實現，晶片面積為0.804 × 0.986 mm2。透過晶片量測驗證，當不同大小的交流電壓由傳送端耦合至接收端，接收端皆能產生穩定之1.8V直流輸出電壓，以供給1mA負載電流。其中輸出電壓漣波小於1%輸出電壓。

關鍵字

近場無線傳能；無外接電容；電源拒斥；可靠度

並列摘要

Recently wireless power transmission technology is widely used by biomedical electronics, RFID and the other integrated circuit systems. It transmits energy and signal through wireless communication. The trend is to reduce the device size at the receiver’s side as presented by several studies [1]-[5]. With the advancement of process technologies, the withstand voltage of transistors are decreased by reducing the thickness of gate oxide. So, to design a reliable power integrated circuit becomes a big challenge. This research presents a near-field wireless power integrated circuit without external capacitors, no other external components are needed but the coupling coil and the systems’ reliability is also enhanced. The test chip is implemented by TSMC 0.18μm 1P6M process and the chip area is 0.804 × 0.986 mm2. The measurement result shows that the receiver can generate a stable 1.8V DC output voltage to supply 1mA output current under different amplitudes of the coupling input voltage from transmitter. The output voltage ripple is less than 1% of output voltage.

並列關鍵字

Near-field wireless power ； External capacitor less ； PSR ； Reliability

參考文獻

[1] P. Cong, N. Chaimanonart, W. H. Ko and D. J. Young, “Wireless and batteryless 10-bit implantable blood pressure sensing microsystem with adaptive RF powering for real-time laboratory mice monitoring,” IEEE J. Solid-State Circuits, vol. 44, no. 12, pp. 3631-3644, Dec. 2009.

[2] M. R. Haider, S. K. Islam, S. Mostafa, M. Zhang and T. Oh, “Low-Power Low-Voltage Current Readout Circuit for Inductively Powered Implant System,” IEEE Trans. Biomed. Circuits Syst., vol. 4, no. 4, pp. 205-213, Aug. 2010.

[3] H. M. Lu, C. Goldsmith, L. Cauller and J.-B. Lee, “MEMS-based inductively coupled RFID transponder for implantable wireless sensor applications,” IEEE Trans. Magn., vol. 43, no. 6, pp. 2412-2414, Jun. 2007.

[4] B. Chen, Y. Zhu, K. Zhu, T. Mo and Z. Que, "The design of a wireless power transmission mechanism for locomotion in active medical inspection MEMS," in IEEE Int. Symp. embedded computing, 2008, pp. 382-387.

[5] X. Liu, F. Zhang, S. Hackworth, R. J. Sclabassi, and M. Sun, “Wireless power transfer system design for implanted and worn devices,” in IEEE Annu. northeast bioengineering Conf., 2009, pp. 1-2.

國際替代計量

無外部電容之近場無線電源積體電路

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