High-power Digital Envelope Modulator for a Polar Transmitter in 65nm CMOS

被引：6
|
作者：
Collados, Manel [1 ]
van Zeijl, Paul T. M. [2 ]
Pavlovic, Nenad [1 ]
机构：
[1] NXP Semicond Res, High Tech Campus 37, NL-5656 AE Eindhoven, Netherlands
[2] Philips Res, NL-5656 AE Eindhoven, Netherlands
来源：
PROCEEDINGS OF THE IEEE 2008 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2008年
关键词：
D O I：
10.1109/CICC.2008.4672192
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：
In this paper, an 8-bit envelope modulator as part of a digital polar transmitter for Bluetooth and WLAN is demonstrated. The modulator performs digital-to-analog conversion, up-mixing and power amplification, allowing for an area-efficient, fully-integrated transmitter architecture. The circuit delivers 24.8dBm peak-power and 16.7dBm WLAN OFDM power with a mean EVM of 2.7% at 2GHz. The measured peak-power drain efficiency is 51% while the efficiency for OFDM is 24%. In Bluetooth EDR mode a 19.7dBm signal with 5%-rms, 13%-peak EVM, and 26% drain efficiency has been measured. The circuit is fabricated in CMOS 65nm with 50 angstrom thick-oxide devices and 2.5V power supply.
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页码：733 / +
页数：2
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