Study on All-Digital Transmitter with Vector Synthesis of Different-Phase Carriers
Project/Area Number |
22560392
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Communication/Network engineering
|
Research Institution | Tokyo University of Science |
Principal Investigator |
UMEDA Yohtaro 東京理科大学, 理工学部, 教授 (80439918)
|
Research Collaborator |
TAKYU Osamu 信州大学, 工学部, 助教 (40453815)
|
Project Period (FY) |
2010 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
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 / パルス密度変調 |
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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Report
(4 results)
Research Products
(15 results)