Leveraging Programmable Capacitor Arrays for Frequency-Tunable Digital Power Amplifiers
| Autor: | Jeffrey S. Walling, Zhidong Bai, Ali Azam |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Radiation business.industry Amplifier Electrical engineering 020206 networking & telecommunications 02 engineering and technology Condensed Matter Physics Predistortion Amplitude modulation CMOS 0202 electrical engineering electronic engineering information engineering Adjacent channel Electrical and Electronic Engineering Center frequency business Frequency modulation Monolithic microwave integrated circuit |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 68:1983-1994 |
| ISSN: | 1557-9670 0018-9480 |
| Popis: | This article presents a digitally frequency-tunable switched-capacitor power amplifier (SCPA) in 65-nm CMOS. The operable frequency range spans from 1.4 to 2.5 GHz. The center frequency is tuned by a programmable capacitor array, widely available from both monolithic microwave integrated circuit (MMIC) and MEMS manufacturers. A prototype is able to achieve a peak output power of 21.7 dBm with a peak system efficiency (SE) of 38.8%, while achieving 58.8% fractional bandwidth. When transmitting a 20-MHz, 64-quadrature amplitude modulation (QAM) long-term evolution (LTE) signal, it outputs 14.1 dBm at 15.7% SE with a measured adjacent channel leakage ratio (ACLR) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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