Contact skin deformation sensing using millimeter wave imager

2018 Fiscal Year Final Research Report

• Project/Area Number: 18H06475
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Review Section: 1002:Human informatics, applied informatics and related fields
• Research Institution: The University of Tokyo
• Principal Investigator: Fujiwara Masahiro 東京大学, 大学院新領域創成科学研究科, 特任助教 (30825592)
• Project Period (FY): 2018-08-24 – 2019-03-31
• Keywords: センシング / フェーズドアレイ / 位相最適化

Outline of Final Research Achievements

A global phase variation minimization method was proposed to reduce phase discontinuities of each oscillator at the time of focus position switching, which is a problem in constructing a phased array type millimeter wave imager of a focus scanning method. This is expected to reduce the error of the imager caused by the amplitude variation due to the phase discontinuity. The effectiveness of the proposed method is confirmed by applying this method to an ultrasonic phased array with a similar structure to the transmitter of the millimeter wave imager and the amplitude fluctuation is actually reduced.

Free Research Field

工学

Academic Significance and Societal Importance of the Research Achievements

大域的位相変動最小化法により、焦点走査方式のフェーズドアレイ型ミリ波イメージャを開発する際の、振幅変動による誤差の低減が期待される。また、提案法はミリ波イメージャに限らず一般のフェーズドアレイ構造の送信部をもつデバイスに適用可能であり、例えば超音波フェーズドアレイに適用することで可聴域の周波数成分の発生を抑制するなどの性能向上が可能である。