Development of Current-Mode Direct Digital Conversion RF-IC

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289094
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Tohoku University
• Principal Investigator: SUEMATSU Noriharu 東北大学, 電気通信研究所, 教授 (20590904)
• Co-Investigator(Kenkyū-buntansha): KAMEDA Suguru 東北大学, 電気通信研究所, 准教授 (10343039)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: マイクロ波 / RFIC / 無線 / 送受信機 / 衛星通信 / CMOS

Outline of Final Research Achievements

We have developed RF circuit technologies for multi-band / multi-mode direct digital RF transceiver. For transmitter, we proposed direct digital RF modulator which consists of current mode DAC and broad-band (multi-band) LO circuits (90degree divider and LO switches). By selecting number of active bit and clock frequency (over sampling number) of the DAC, multi-mode characteristic can be achieved. For receiver, we proposed direct RF undersampling receiver which consists of high speed ON/OFF LNA and high frequency BPF type S/H IC’s. By using these circuits, both high dynamic range and low power consumption can be obtained.

Free Research Field

無線回路