A power-efficient injection-locked class-E power amplifier for wireless sensor network
- 3 April 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Components Letters
- Vol. 16 (4), 173-175
- https://doi.org/10.1109/lmwc.2006.872141
Abstract
We present an injection-locked Class-E power amplifier (Class-E ILPA) suitable for 2.4-GHz wireless sensor network applications where the maximum transmit-power is typically about 10dBm. In such a low transmit-power application, it is a great challenge to achieve a high transmit efficiency because the driving power and dc power consumption in the previous stage are no more negligible compared with the transmitted signal power. The proposed Class-E ILPA, which is fully integrated in 0.18-μm CMOS technology, achieves the power added efficiency of 44.5% while delivering the output power of 11dBm with drain efficiency of 49.3% at 1.2-V supply voltage. The measured locking range reaches 300MHz with the input driving power of -6dBm.Keywords
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