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A fully integrated 1 V, +9.5 dBm, 43%-PAE injection-locked Class-E power amplifier for wireless sensor network

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5 Author(s)
Hyoung-Seok Oh ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Song, Taeksang ; Sang-Hyun Baek ; Euisik Yoon
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In most short-range wireless sensor network applications, the maximum transmit-power is typically about 10 dBm at 2.4 GHz ISM band. In such a low transmit-power level, the driving power and DC power consumption in the previous stage are no more negligible compared to the transmitted signal power. So, to increase the overall transmitter efficiency, not only the output power stage, but also the driver stage needs to be co-optimized for low power operation. In this paper, we present an injection-locked Class-E power amplifier (Class-E ILPA) suitable for the low transmit-power sensor network applications. The proposed power amplifier, which is fully integrated in 0.18 μm CMOS technology, achieves a power added efficiency (PAE) of 43% while delivering an output power of 9.5 dBm with a drain efficiency (DE) of 48.5% at 1 V supply voltage.

Published in:

Radio and Wireless Symposium, 2006 IEEE

Date of Conference:

17-19 Jan. 2006

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