2012 Fiscal Year Final Research Report
Study on All-Digital Transmitter with Vector Synthesis of Different-Phase Carriers
| Project/Area Number |
22560392
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
UMEDA Yohtaro 東京理科大学, 理工学部, 教授 (80439918)
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| Research Collaborator |
TAKYU Osamu 信州大学, 工学部, 助教 (40453815)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 移動体通信 / 電力増幅器 / 高効率 / スイッチング動作 / ディジタル回路 / 送信機 / パルス幅変調 / デルタシグマ変調 |
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| Research Abstract |
This study first performs an modulation accuracy measurement including a power amplifier for a quadrature-modulation envelope pulse-width-modulation (EPWM) type switching-mode transmitter. In addition, this study proposes effective demodulation power efficiency (EDPE) as a figure of merit to represent the substantial power efficiency for a quadrature-modulation EPWM transmitter. Furthermore, the study proposes a power-amplifier inserted transversal filter with 180-degree hybrids for power combining to suppress the out-of-band quantization noise.
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Research Products
(5 results)
