An Octave-Range, Watt-Level, Fully-Integrated CMOS Switching Power Mixer Array for Linearization and Back-Off-Efficiency Improvement
- 15 December 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 44 (12), 3376-3392
- https://doi.org/10.1109/jssc.2009.2032271
Abstract
The power mixer array is presented as a novel power generation approach for non-constant envelope signals. It comprises several power mixer units that are dynamically turned on and off to improve the linearity and back-off efficiency. At the circuit level, the power mixer unit can operate as a switching amplifier to achieve high peak power efficiency. Additional circuit level linearization and back-off efficiency improvement techniques are also proposed. To demonstrate the feasibility of this idea, a fully-integrated octave-range CMOS power mixer array is implemented in a 130 nm CMOS process. It is operational between 1.2 GHz and 2.4 GHz and can generate an output power of +31.3 dBm into an external 50 ¿ load with a PAE of 42% and a gain compression of only 0.4 dB at 1.8 GHz. It achieves a PAE of 25%, at an average output power of +26.4 dBm, and an EVM of 4.6% with a non-constant-envelope 16 QAM signal. It can also produce arbitrary signal levels down to -70 dBm of output power with the 16 QAM-modulated signal without any RF gain control circuit.Keywords
This publication has 19 references indexed in Scilit:
- A 10 MHz Bandwidth, 2 mV Ripple PA Regulator for CDMA TransmittersIEEE Journal of Solid-State Circuits, 2008
- A Digitally Modulated Polar CMOS Power Amplifier With a 20-MHz Channel BandwidthIEEE Journal of Solid-State Circuits, 2008
- A high-resolution 24-dBm Digitally-Controlled CMOS PA for multi-Standard RF polar transmittersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Feedthrough cancellation in a class E amplified polar transmitterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- A Monolithic High-Efficiency 2.4-GHz 20-dBm SiGe BiCMOS Envelope-Tracking OFDM Power AmplifierIEEE Journal of Solid-State Circuits, 2007
- A $+$31.5 dBm CMOS RF Doherty Power Amplifier for Wireless CommunicationsIEEE Journal of Solid-State Circuits, 2006
- Linear RF Polar Modulated SiGe Class E and F Power AmplifiersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Design of wide-bandwidth envelope-tracking power amplifiers for OFDM applicationsIEEE Transactions on Microwave Theory and Techniques, 2005
- Efficiency of Outphasing RF Power-Amplifier SystemsIEEE Transactions on Communications, 1985
- Single-Sideband Transmission by Envelope Elimination and RestorationProceedings of the IRE, 1952