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Design Considerations for a Direct Digitally Modulated WLAN Transmitter With Integrated Phase Path and Dynamic Impedance Modulation.
- Source :
- IEEE Journal of Solid-State Circuits; Dec2013, Vol. 48 Issue 12, p3160-3177, 18p
- Publication Year :
- 2013
-
Abstract
- A 65-nm digitally modulated polar TX for WLAN 802.11g is fully integrated along with baseband digital filtering. The TX employs dynamic impedance modulation to improve efficiency at back-off powers. High-bandwidth phase modulation is achieved efficiently with an open-loop architecture. Operating from 1.2-V/1-V supplies, the TX delivers 16.8 dBm average power at -28-dB EVM with 24.5% drain efficiency, 22% PAE, 19.3% system efficiency, and 247-mW power consumption including the entire on-chip TX chain; the noise floor is -125 dBm/Hz at 200-MHz offset without external filtering. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189200
- Volume :
- 48
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- IEEE Journal of Solid-State Circuits
- Publication Type :
- Academic Journal
- Accession number :
- 92520297
- Full Text :
- https://doi.org/10.1109/JSSC.2013.2281142