IEEE UFFC Society, IEEE 2019 UFFC Distinguished Service Award,For a career of masterful leadership, dedicated service and commitment to the UFFC-Society in many positions including two Co-Chairmanships of the IEEE International Ultrasonics Symposium, International Distinguished Lecturer, and AdCom Member橋本研也
2018年10月
USE運営委員会, USE2017論文賞,“A 3.5 GHz Longitudinal Leaky Surface Acoustic Wave Resonator Using a Multilayered Waveguide Structure for High Acoustic Energy Confinement,” Jpn. J. Appl. Phys., 57, 7 (2018) 07LD15-1~4T.Kimura Y.Kishimoto M.Omura K.Hashimoto
IEC(国際電気標準会議), IEC1906賞,For his work as a key expert of IEC TC49/WG10 for 7 years, and important contribution as project leader for the development of three International Standards on piezoelectric SAW and BAW filters橋本研也
This paper reports development of an integrated tunable active filter for lower UHF band based on the recursive architecture and its application. The recursive filter core gives the 2-pole bandpass response, and its center frequency can be tuned f...
Hikaru Oka   Chang-Jun Ahn   Tatsuya Omori   Ken-ya Hashimoto   
2014 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) 17-22 2014年 [査読有り]
A direct-conversion receiver (DCR) can reduce the power consumption and cost. However, a DCR in Orthogonal frequency division multiplexing (OFDM) systems suffer from IQ imbalance and Carrier Frequency Offset (CFO). Until this time, many algorithms...
JAPANESE JOURNAL OF APPLIED PHYSICS 52(7) 2013年7月 [査読有り]
This paper proposes a configuration of the radio frequency surface acoustic wave (SAW) filter with wide tunability for both the passband width and the center frequency. At first, it is shown how the center frequency and the passband width are adju...
Jiansong Liu   Tatsuya Omori   Changjun Ahn   Ken-ya Hashimoto   
JOURNAL OF APPLIED PHYSICS 113(14) 2013年4月 [査読有り]
This paper discusses applicability of the Bragg reflection in a periodic grating placed on the top electrode of the film bulk acoustic resonator structure in order to forbid lateral propagation of the spurious Lamb mode. The finite element analysi...
ELECTRONICS AND COMMUNICATIONS IN JAPAN 96(4) 61-66 2013年4月 [査読有り]
Because of their excellent features such as small size, wide bandwidth, and low insertion loss, ladder-type filters based on surface acoustic wave (SAW) technology have been widely used as radio-frequency (RF) filters in mobile communications. We ...
The symbol timing synchronization inaccuracy can bring about phase offset (FO), inter-symbol interference (ISI) and inter-channel interference (ICI). To overcome these shortcomings as much as possible, in this paper, a novel symbol timing synchron...