A power-efficient injection-locked Class-E power amplifier for wireless sensor network

Hyoung Seok Oh; Taeksang Song; Euisik Yoon; Choong Ki Kim

doi:10.1109/LMWC.2006.872141

A power-efficient injection-locked Class-E power amplifier for wireless sensor network

Hyoung Seok Oh, Taeksang Song, Euisik Yoon, Choong Ki Kim

Yonsei Advanced Science Institute

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

In this letter, 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 10 dBm. 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 11 dBm with drain efficiency of 49.3% at 1.2-V supply voltage. The measured locking range reaches 300 MHz with the input driving power of -6 dBm.

Original language	English
Pages (from-to)	173-175
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	16
Issue number	4
DOIs	https://doi.org/10.1109/LMWC.2006.872141
Publication status	Published - 2006 Apr

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/LMWC.2006.872141

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