Title:
A fully-integrated all-digital outphasing transmitter for wireless communications

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dc.contributor.advisor Laskar, Joy
dc.contributor.author Kim, Kwan-Woo en_US
dc.contributor.committeeMember Bellamkonda, Ravi V
dc.contributor.committeeMember Lee, Chang-Ho
dc.contributor.committeeMember Schimmel, David E
dc.contributor.committeeMember Tentzeris, Emmanouil M
dc.contributor.department Electrical and Computer Engineering en_US
dc.date.accessioned 2011-03-04T21:02:32Z
dc.date.available 2011-03-04T21:02:32Z
dc.date.issued 2009-11-12 en_US
dc.description.abstract The objective of the proposed research is to present a new all-digital outphasing transmitter IC, a comprehensive explanation of its operation, and its performance characterization. The all-digital transmitter chip leverages flexible digital phase modulators (DPMs) to adaptively compensate for amplifier mismatches. As the DPM uses a digital input to directly modulate the RF phase of each path, the phase control becomes very simple and accurate for power amplifier (PA) gain/phase mismatch compensation. Furthermore, this digital phase modulation scheme also facilitates minimizing the distortion of an RF combiner. It is newly proposed that two distinct digital predistortion algorithms are required for perfect compensation for both PAs and a combiner. All phase calibration values can be adaptively calculated as a function of outphase angle and saved in digital look-up tables to predistort the phase inputs of two DPMs. Various types of PAs and combiners are investigated to further enhance the performance of the outphasing transmitter. These features are implemented in a chip fabricated in a 0.18-¥ìm CMOS process and evaluated with IEEE 802.16e baseband symbols. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/37263
dc.publisher Georgia Institute of Technology en_US
dc.subject LINC en_US
dc.subject Efficiency en_US
dc.subject PA en_US
dc.subject OFDM en_US
dc.subject Outphasing en_US
dc.subject.lcsh Wireless communication systems
dc.subject.lcsh Radio frequency integrated circuits
dc.title A fully-integrated all-digital outphasing transmitter for wireless communications en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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