Optimized Ultralow-Power Amplifier for OOK Transmitter With Shaped Voltage Drive
In: IEEE Transactions on Microwave Theory and Techniques, Jg. 64 (2016-08-01), S. 2615-2622
Online
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Zugriff:
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.
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Optimized Ultralow-Power Amplifier for OOK Transmitter With Shaped Voltage Drive
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Autor/in / Beteiligte Person: | Jeong, Daechul ; Lee, Seokwon ; Chung, Taeyoung ; Lee, Hankyu ; Kim, Bumman ; Lee, Jae-Sup |
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Zeitschrift: | IEEE Transactions on Microwave Theory and Techniques, Jg. 64 (2016-08-01), S. 2615-2622 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2016 |
Medientyp: | unknown |
ISSN: | 1557-9670 (print) ; 0018-9480 (print) |
DOI: | 10.1109/tmtt.2016.2581822 |
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