Optimized Ultralow-Power Amplifier for OOK Transmitter With Shaped Voltage Drive

被引：8

作者：

Jeong, Daechul ^{[1
]}

Lee, Hankyu ^{[2
]}

Chung, Taeyoung ^{[3
]}

Lee, Seokwon ^{[1
]}

Lee, Jaesup ^{[2
]}

Kim, Bumman ^{[1
,3
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Elect Engn, Pohang 790784, South Korea

[2] Samsung Adv Inst Technol, Suwon 443803, South Korea

[3] Pohang Univ Sci & Technol, Div IT Convergence Engn, Pohang 790784, South Korea

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2016年 / 64卷 / 08期

关键词：

Class-C; CMOS; ON-OFF keying (OOK); power amplifier (PA); ultralow power (ULP); TRANSCEIVER; EFFICIENT;

D O I：

10.1109/TMTT.2016.2581822

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

For a highly efficient ON-OFF keying (OOK) transmitter, a microwatt-level ultralow-power (ULP) driver and power amplifier (PA) are designed. For efficient amplification with very high optimum impedance in the ULP application, a class-C topology is implemented and loadpull simulations are carried out to show that the proposed PA can achieve good efficiency at high optimum load impedance without any harmonic tuning. In addition, a voltage-shaping driver is optimized together with the PA for an efficient drive. The proposed driver shapes the PA input voltage into a waveform having a small conduction angle. The shaped input voltage drives the PA to a saturated operation for good efficiency even if the supply voltage is low in the drive stage. The developed driver and PA are implemented in a CMOS 65-nm process and support a 1-Mb/s OOK modulated signal. The implemented PA achieves a drain efficiency of 50.8% at the -6.8-dBm output power and 49.8% at the -10-dBm output power when transmitting continuous 1 signal.

引用

页码：2615 / 2622

页数：8

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