Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Yoshitaka Murasaka"'
Autor:
Hiroyuki Ito, Mitsutoshi Sugawara, Michimasa Yamaguchi, Shinsuke Sasada, Yoshitaka Murasaka, Tomoaki Maeda, Atsushi Iwata, Masahiro Ono, Tsuyoshi Matsumaru, Yoshihiro Masui, Toshifumi Imamura, Akihiro Toya, Takuichi Hirano, Takamaro Kikkawa, Afreen Azhari, Hang Song
Publikováno v:
IEEE Transactions on Biomedical Circuits and Systems. 14:1333-1345
A single-chip Gaussian monocycle pulse (GMP) transceiver was developed for radar-based microwave imaging by the use of 65-nm complementary metal oxide semiconductor (CMOS) technology. A transmitter (TX) generates GMP signals, whose pulse widths and -
Autor:
Akihiro Toya, Takamaro Kikkawa, Atsushi Iwata, Masahiro Ono, Hiroyuki Ito, Mitsutoshi Sugawara, Yoshitaka Murasaka, Yoshihiro Masui, Toshifumi Imamura, Tomoaki Maeda
Publikováno v:
BioCAS
An equivalent time sampling circuit has been developed for impulse-radio ultra-wideband radar systems. The received signals are digitized by a shifting clock. The accuracy of the clock that affects the sampling interval of analog-to-digital converter
Autor:
Tomoaki Maeda, Masahiro Ono, Yoshihiro Masui, Yoshitaka Murasaka, Takamaro Kikkawa, Akihiro Toya, Atsushi Iwata, Mitsutoshi Sugawara
Publikováno v:
BioCAS
Gaussian Monocycle Pulses (GMP) play a very important role in a radar-based painless breast cancer detection system. In order to guarantee the detection accuracy, it is necessary to stabilize the pulse width and the amplitude under the influence of t
Autor:
Atsushi Iwata, Masahiro Ono, Tomoaki Maeda, Yoshihiro Masui, Mitsutoshi Sugawara, Akihiro Toya, Yoshitaka Murasaka, Takamaro Kikkawa
Publikováno v:
BioCAS
Impulse radio ultrawideband (IR-UWB) technologies have been applied for time-domain breast cancer imaging systems. A Gaussian monocycle pulse (GMP) train with 200 ps pulse width is generated and the received GMP is converted from analog to digital by
Autor:
Yoshihiro Masui, Yoshitaka Murasaka, Tomoaki Maeda, Atsushi Iwata, Akihiro Toya, Masahiro Ono, Takamaro Kikkawa, Mitsutoshi Sugawara
Publikováno v:
BioCAS
A radar-based breast cancer detection system by use of impulse-radio ultrawideband (IR-UWB) integrated circuits was developed. This paper presents a 3–10GHz UWB differential equivalent time sampling receiver for breast cancer detection, which is as
Publikováno v:
IEICE Transactions on Electronics. :923-929
Progress of roles and schemes of calibration techniques in data converters are reviewed. Correction techniques of matching error and nonlinearity in analog circuits have been developed by digital assist using high-density and low-power digital circui
Publikováno v:
Japanese Journal of Applied Physics. 47:2742-2745
With an increase in the operation frequency of complimentary metal oxide semiconductor (CMOS) circuits, a radio-frequency system-on-a-chip (RF-SOC) that integrates GHz-RF and large-scale digital circuits becomes a key device for wireless systems and
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :2651-2660
Chip-level substrate coupling analysis uses F-matrix computation with slice-and-stack execution to include highly concentrated substrate resistivity gradient. The technique that has been applied to evaluation of device-level isolation structures agai
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :380-387
Substrate-coupling equivalent circuits can be derived for arbitrary isolation structures by F-matrix computation. The derived netlist represents a unified impedance network among multiple sites on a chip surface as well as internal nodes of isolation
Publikováno v:
CICC
Slice-and-stack representation of a vertical substrate impurity profile in F-matrix computation captures isolation effects of deep N-wells as well as guard rings in chip-level substrate coupling. A reference flow of substrate noise analysis combines