Name
Abstract | ||
|---|---|---|
This paper presents a 1.9 GHz linear power amplifier (PA) architecture that improves its power efficiency in the power back-off (PBO) region. The combination of power transistor segmentation and digital gain compensation effectively enhances its power efficiency. A fast switching scheme is proposed, such that PA segments are switched on and off according to signal power, i.e. the proposed scheme makes the PA power consumption correlate with the power of the input signal. Binary power gain variations due to segmentation are dynamically compensated in the digital domain. The proposed solution overcomes the trade-off between efficiency and linearity by employing the digital predistortion technique. The PA is implemented in 40 nm CMOS process, it delivers a saturated output power of 35 dBm with 44.9% power-added efficiency (PAE) and linear gain of 38 dB. The adjacent channel leakage ratio (ACLR) at ±5 MHz at a maximum linear output power of 31 dBm for a baseband WCDMA signal is -35.8 dBc. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/ASSCC.2014.7008932 | A-SSCC |
Keywords | Field | DocType |
cmos analogue integrated circuits,uhf power amplifiers,compensation,power consumption,aclr,cmos process,pa architecture,pa power consumption,pae digitally-assisted linear power amplifier,pbo,adjacent channel leakage ratio,baseband wcdma signal,binary power gain variations,digital gain compensation,digital predistortion technique,efficiency 44.9 percent,fast switching scheme,frequency 1.9 ghz,gain 38 db,input signal,power added efficiency,power back-off region,power transistor segmentation,signal power,size 40 nm,baseband,radio frequency,transistors,cmos integrated circuits,switches,power generation,gain | Electrical efficiency,Power gain,Power semiconductor device,Computer science,Electronic engineering,Linear amplifier,Power-added efficiency,RF power amplifier,Electrical engineering,Power bandwidth,Switched-mode power supply | Conference |
Citations | PageRank | References |
1 | 0.39 | 4 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Haoyu Qian | 1 | 4 | 1.30 |
| Silva-Martinez, J. | 2 | 1 | 0.39 |