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Digital Switching CMOS Power Amplifi...

Nakatani, Toshifumi.

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Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications./
Author:	Nakatani, Toshifumi.
Description:	347 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.
Contained By:	Dissertation Abstracts International75-03B(E).
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3604549
ISBN:	9781303602955

Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications.
Nakatani, Toshifumi.

Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications. - 347 p.

Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.

Thesis (Ph.D.)--University of California, San Diego, 2013.

This thesis is directed towards the development of a digitally-assisted radio frequency power amplifier (RF PA) which is one of the potential solutions to realize a multiband and multimode transmitter with high efficiency for handset applications. To improve efficiency and linearity in multiple conditions, PA circuits and digital signal processing (DSP) algorithms are co-designed. In the dissertation, a proposed architecture employs a current-mode class-D (CMCD) configuration for high efficiency, and a polar modulation scheme driven by digital inputs. Detail design, fabrication and experimental results are given for circuit implementation and DSP of this architecture.

ISBN: 9781303602955Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications.
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008 150210s2013 ||||||||||||||||| ||eng d
020 $a 9781303602955
035 $a (MiAaPQ)AAI3604549
035 $a AAI3604549
040 $a MiAaPQ $c MiAaPQ
100 1 $a Nakatani, Toshifumi. $3 2101295
245 1 0 $a Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications.
300 $a 347 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.
500 $a Adviser: Peter M. Asbeck.
502 $a Thesis (Ph.D.)--University of California, San Diego, 2013.
520 $a This thesis is directed towards the development of a digitally-assisted radio frequency power amplifier (RF PA) which is one of the potential solutions to realize a multiband and multimode transmitter with high efficiency for handset applications. To improve efficiency and linearity in multiple conditions, PA circuits and digital signal processing (DSP) algorithms are co-designed. In the dissertation, a proposed architecture employs a current-mode class-D (CMCD) configuration for high efficiency, and a polar modulation scheme driven by digital inputs. Detail design, fabrication and experimental results are given for circuit implementation and DSP of this architecture.
520 $a First, a multiband watt-class complementary metal-oxide-semiconductor (CMOS) PA is demonstrated using 0.15 um CMOS integrated circuits (ICs), off-chip inductor and balun. To obtain high breakdown voltage, stacked field effect transistors (FETs) are used. The CMCD PA is tuned by band-switching capacitors, operating in the 0.7-1.8 GHz frequency band. The overall efficiencies of 27.1 / 25.6 % are achieved at 30.2 / 28.9 dBm CW output powers and 0.85 / 1.75 GHz carrier frequencies, respectively.
520 $a Next, to achieve wide output power dynamic range, an architecture consisting of small segmented unti-cells is introduced into the PA, where multiple three-state unit-cells are used and the state of each unit-cell is controlled to provide a specific output power. The overall dynamic ranges are expanded to approximately 90 dB and 85 dB at and 0.85 / 1.75 GHz, respectively.
520 $a The dissertation then presents digital modulation algorithms. The digital compensation techniques are developed to maintain linearity of an envelope modulator of the polar transmitter. A new digital pulse width modulation algorithm is also shown to partially suppress spurious signals associated with the digital input envelope signal. When wideband code-division multiple access (WCDMA) modulation is implemented, spur suppression of 9-10 dB is achieved while maintaining adjacent channel leakage power ratios within 3rd generation partnership project specifications.
590 $a School code: 0033.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Physics, Electricity and Magnetism. $3 1019535
650 4 $a Engineering, Computer. $3 1669061
690 $a 0544
690 $a 0607
690 $a 0464
710 2 $a University of California, San Diego. $b Electrical Engineering (Electronic Circuits and Systems). $3 1669432
773 0 $t Dissertation Abstracts International $g 75-03B(E).
790 $a 0033
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3604549