Name
Title | ||
|---|---|---|
A CMOS Burst-Mode Transmitter With Watt-Level RF PA and Flexible Fully Digital Front-End |
Abstract | ||
|---|---|---|
A fully digital burst-mode handheld transmitter with power amplifier for the 900-MHz band is presented. The transmitter front-end consists of a digital polar modulator which uses pulse width modulation (PWM) for the amplitude modulator. Phase modulation (PM) is implemented by shifting the carrier in time. Both the PWM and the PM are implemented using asynchronous delay lines which allow time resolutions down to 10 ps without the need for high-frequency clock signals. The modulated signal is amplified by a Class B amplifier which uses power combining to reach watt-level output power. The transmitter is implemented in standard CMOS technology. When transmitting a modulated signal with a peak-to-average power ratio (PAPR) of 10.3 dB and 5-MHz bandwidth, the burst-mode transmitter meets the stringent error-vector-magnitude (EVM) specifications of 5.6% at 23.1-dBm average output power with 11.7% power added efficiency (PAE). |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TCSII.2012.2213365 | Circuits and Systems II: Express Briefs, IEEE Transactions |
Keywords | Field | DocType |
CMOS digital integrated circuits,UHF power amplifiers,delay lines,modulators,phase modulation,pulse width modulation,radio transmitters,CMOS digital burst-mode handheld transmitter,EVM specification,PAE,PAPR,PM,PWM,amplitude modulator,asynchronous delay lines,class B amplifier,digital polar modulator,error-vector-magnitude,flexible fully digital front-end,frequency 900 MHz,peak-to-average power ratio,phase modulation,power added efficiency,power amplifier,pulse width modulation,time resolution,watt-level RF PA,watt-level output power,Burst-mode,CMOS,delay line,flexibility,fully digital transmitter,pulse width modulation (PWM),watt-level RF PA,wireless transmitter | Transmitter,Transmitter power output,Pulse-width modulation,CMOS,Modulation,Electronic engineering,Power-added efficiency,RF power amplifier,Electrical engineering,Mathematics,Amplifier | Journal |
Volume | Issue | ISSN |
59 | 10 | 1549-7747 |
Citations | PageRank | References |
4 | 0.44 | 4 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Pieter A. J. Nuyts | 1 | 22 | 2.41 |
| Brecht François | 2 | 6 | 0.85 |
| Dehaene, W. | 3 | 4 | 0.44 |
| Patrick Reynaert | 4 | 463 | 76.50 |