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Content Provider | IEEE Xplore Digital Library |
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Author | Hongtao Xu Palaskas, Y. Ravi, A. Sajadieh, M. El-Tanani, M.A. Soumyanath, K. |
Copyright Year | 1966 |
Abstract | A 2.4 GHz outphasing power amplifier (PA) is implemented in a 32 nm CMOS process. An inverter-based class-D PA topology is utilized to obtain low output impedance and good linearity in the outphasing system. MOS switch non-idealities, such as finite on-resistance and finite rise and fall times are analyzed for their impact on outphasing linearity and efficiency. Outphasing combining is performed via a transformer configured to achieve reduced loss at power backoff. The fabricated class-D outphasing PA delivers 25.3 dBm peak CW power with 35% total system Power Added Efficiency (includes all drivers). Average OFDM power is 19.6 dBm with efficiency 21.8% when transmitting WiFi signals with no linearization required. The PA is packaged in a flip-chip BGA package. Good linearity performance (ACPR and EVM) demonstrates the applicability of inverter-based class-D amplifiers for outphasing configurations. |
Sponsorship | IEEE Solid-State Circuits Society IEEE Electron Devices Society IEEE Circuits and Systems Society Japan Society of Applied Physics (JSAP) IEEE Microwave Theory and Techniques Society IEEE San Francisco Section Bay Area Council Univ. PA IEEE |
Starting Page | 1596 |
Ending Page | 1605 |
Page Count | 10 |
File Size | 2579685 |
File Format | |
ISSN | 00189200 |
Volume Number | 46 |
Issue Number | 7 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-07-01 |
Publisher Place | U.S.A. |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Switches Radio frequency Linearity Transistors Driver circuits CMOS integrated circuits Power generation CMOS PA Outphasing OFDM WLAN power amplifier class-D SOC |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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