A hybrid envelope amplifier with switching-controlled structure for EDGE/WCDMA/LTE reconfigurable transmitters

This paper presents a new type of the hybrid envelope amplifier (HEA) using a switching-controlled structure for reconfigurable transmitters. The dual switching stage, controlled by an appropriate voltage with respects to the selected mode, is employed to obtain high efficiency. For verification, th...

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Bibliographic Details
Main Authors: Hyuk Su Son, Woo Young Kim, Joo Young Jang, Joon Hyung Kim, Inn Yeal Oh, Chul Soon Park
Format: Conference Proceeding
Language:English
Subjects:
CMOS integrated circuits
CMOS technology
Envelope Amplifier
Envelope Tracking
Frequency measurement
Polar Transmitter
Power Amplifier
Radio frequency
Supply Modulator
Switches
Switching circuits
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Description
Summary:This paper presents a new type of the hybrid envelope amplifier (HEA) using a switching-controlled structure for reconfigurable transmitters. The dual switching stage, controlled by an appropriate voltage with respects to the selected mode, is employed to obtain high efficiency. For verification, the proposed HEA has been fabricated using 0.35-µm CMOS technology within an area of 2.3 × 1.1 mm 2 including all of the pads. The maximum efficiency of 85%, 84% and 79%, which are approximately 9%, 6% and 5% higher than those of the conventional HEA, are achieved for EDGE, WCDMA, and LTE modes, respectively.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2012.6259469