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Digital Switching CMOS Power Amplifi...
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Nakatani, Toshifumi.
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Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications.
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Digital Switching CMOS Power Amplifier for Multiband and Multimode Handset Applications./
作者:
Nakatani, Toshifumi.
面頁冊數:
347 p.
附註:
Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.
Contained By:
Dissertation Abstracts International75-03B(E).
標題:
Engineering, Electronics and Electrical. -
電子資源:
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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Source: Dissertation Abstracts International, Volume: 75-03(E), Section: B.
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Adviser: Peter M. Asbeck.
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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.
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