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35.13
Displaying 1-15 of 15 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (14K) -
Article type: Index
Pages Toc1-
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (63K) -
Takuya SHITOMI, Kenichi MURAYAMA, Makoto TAGUCHI, Shingo ASAKURA, Kazu ...Article type: Article
Session ID: BCT2011-41
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSNHK is conducting research on the next generation of digital terrestrial broadcasting to enable large-volume content services such as Super Hi-Vision. We have developed the large capacity transmission technologies using dual polarized MIMO and ultra multi-level OFDM. We have conducted indoor and field experiments on dual polarized MIMO transmission using circularly (right-handed, left-handed) or skew(+45°, -45°) polarized wave in addition to conventional polarization set (horizontal, vertical). We have evaluated the influence of the difference of the received power between horizontal and vertical waves on the transmission characteristics.View full abstractDownload PDF (852K) -
Hitoshi SANEI, Madoka NAKAMURA, Masahiro OKANO, Shunji NAKAHARAArticle type: Article
Session ID: BCT2011-42
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn July 2011, a new broadcasting service called "Mobile Multimedia Broadcasting" will start its service on channels 1 to 3 in the VHF band. In this broadcasting, the introduction of a new storable broadcasting service is now under consideration. In the storable service, users will be able to view contents after recording them. The data carousel transmission method is proposed as a method to conclude this storable service only through broadcast wave. So first we clarified the relationship between the number of transmission and the probability of receiving successful contents, and next we evaluated the minimum number of transmissions required to receive successfully all contents by laboratory test.View full abstractDownload PDF (825K) -
Hideki YOSHIDA, Hiromi SUGIYAMA, Satoshi KAZAMA, Hiroshi TSUTAGAYAArticle type: Article
Session ID: EMCJ2010-120
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSRecently, a vehicle has equipped with an increasing number of digital radio devices. In an early phase of development, therefore, it is vital to inspect any effects of broadband burst noise generated by onboard devises, such as a motor. In this paper, we conduct experiments to estimate Bit Error Ratio (BER) of when vehicle- generated broadband burst noise is added to digital terrestrial television (one-segment) signal. The results indicate that BER, which receives desensitization of broadband burst noise, can be estimated with high accuracy by adding broadband burst noise's effective electric power, which is calculated each effective symbol period, and C/N-BER characteristics when AWGN is added.View full abstractDownload PDF (625K) -
Dielectric Characterization of Limited Volume of Human Blood by Open-Ended Coaxial Measurement ProbeAkira TAKEDA, Kazuyuki TAKATA, Hirotomo NAGAO, Jianqing WANG, Osamu Fu ...Article type: Article
Session ID: EMCJ2010-121
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSBefore evaluating the quality of hemodialysis from the limited volume of human blood using a commercially available open-ended coaxial probe, we previously measured the complex relative permittivity of pure water in the frequency range from 200MHz to 6GHz with respect to its measured liquid volume, and obtained the measurement errors relative to the calculated values from an empirical formula Udo developed for water permittivity to reveal that 0.9ml water in a beaker with a diameter of 24mm and a depth of 2mm gives a variation within ±0.5% for the real part and ±7% for the imaginary part. Based on the above finding, we measured for normal healthy subjects and patients who require hemodialysis the dielectric properties of 2.5ml whole blood in a syringe with a diameter of 20mm and a depth of 8mm. As a result, we found that Cole-Cole parameters are significantly different with a level of 5% among their averaged values for normal subjects and patients before/after dialysis.View full abstractDownload PDF (585K) -
Ryosuke YANAGISAWA, Yoshiki KAYANO, Hiroshi INOUEArticle type: Article
Session ID: EMCJ2010-122
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSNegative group delay characteristics can be used to signal processing devices such as equalizer for compensation of the group delay of systems, and pulse compression circuit of radar systems. In this paper, to clarify negative group delay characteristics achieved by planar structure on an IC chip, we designed the Folded-Stepped Impedance Resonator (F-SIR) structure on printed circuit board (PCB), which has the symmetrical electric-wall at the guide center driven by differential-mode. The group delay characteristics were discussed experimentally and with FDTD modeling. It was demonstrated that the negative group delay is achieved at anti-resonant frequencies.View full abstractDownload PDF (1212K) -
Kyosuke KURODA, Hideki ASAIArticle type: Article
Session ID: EMCJ2010-123
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn this report, we propose a hybrid finite-difference time-domain (FDTD) method, where the FDTD method and the ADI-FDTD method are used for the simulation of the space which is composed of two subdomains, where different cell sizes are used. By the proposed approach, the use of small time step size can be avoided, and then the CPU time is reduced. In this work, updating formula of the boundary between two subdomains is formulated. The validity of proposed approach is shown from some simulation results.View full abstractDownload PDF (822K) -
Yuta INOUE, Tadatoshi SEKINE, Hideki ASAIArticle type: Article
Session ID: EMCJ2010-124
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe block-Latency Insertion Method (block-LIM) is one of the techniques for fast transient analyses of large scale linear circuits including mutual inductance and mutual capacitance. This method is much faster than the conventional SPICE-like simulators. However, in the LIM-based simulation, a time step size is restricted by the minimum value of the circuit elements in a whole circuit. In nature, the adaptive time step size should be used for each subcircuit, which is determined by the parameters in the subcircuit. In this report, the multirate block-LIM is proposed to adopt the adequate time step sizes for respective subcircuits. Finally, some simulation results are shown, and it is confirmed that the proposed method can reduce the computation time.View full abstractDownload PDF (783K) -
Shingo OKADA, Takanori UNO, Hideki ASAIArticle type: Article
Session ID: EMCJ2010-125
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn this report, first, we introduce a practical equivalent circuit modeling for the automotive electromagnetic compatibility (EMC). Our modeling covers the inside of an integrated circuit (IC) on a printed circuit board (PCB), an attached wire harness, and parasitic elements around them. The equivalent circuit is suitable for the simulation of the common-mode current caused by switching devices in the IC, and thereby becoming the electromagnetic interference (EMI) source among automotive electronic devices. With the proposed equivalent circuit, more detailed and valid simulation and optimization can be performed for the common-mode noise reduction. Adequacy of our model is shown by confirming that the simulation results of the equivalent circuit agree with the actual measurement results of an evaluation board.View full abstractDownload PDF (960K) -
Michihira IIDA, Tsuyoshi MAENO, Osamu FUJIWARA, Jianqing WangArticle type: Article
Session ID: EMCJ2010-126
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIt is well known that electromagnetic disturbances in vehicle-mounted radios are mainly caused by conducted noise currents flowing through wiring-harnesses from vehicle-mounted printed circuit boards (PCBs) with common slitting ground patterns. To suppress these kinds of noise currents from PCBs, we previously measured them for simple two-layer PCBs with two parallel signal traces and slitting or non-slitting ground patterns. The results revealed that making slits with open ends on the ground patterns in parallel with the traces can reduce the conducted noise currents. To verify the contributor factor, we then investigated the reduction characteristics of the FM-band cross-talk noise levels between two parallel signal traces on four simple PCB models using FDTD simulation. Each PCB model had different slitting ground patterns in which the slits were parallel to the traces but had the same planar dimensions. Another two simple PCB models in which the ground patterns were divided into two parts parallel to the traces were also investigated. As a result, we found that the contributory factor for the FM-band cross-talk reduction is the reduction of mutual inductance between the two parallel traces. Moreover, it is also interesting to note that the noise currents from PCBs can rather be suppressed even if the size of the return ground is small. In this study, to further confirm this finding, we simulated the characteristics of cross-talk reduction for additional six simple PCB models which have different ground patterns sizes and each ground pattern is divided into two parts parallel to the traces. The results also confirmed the interesting phenomenon of cross-talk reduction characteristics.View full abstractDownload PDF (848K) -
Hao-Hsiang Chuang, Tzong-Lin WuArticle type: Article
Session ID: EMCJ2010-127
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA novel grounded resonator technique is proposed and both of its mechanism and performance is demonstrated. The proposed method can greatly suppress the electromagnetic radiation caused by the common-mode noise of slot-crossing differential line at GHz frequency range. Apart from the predominant solution of using stitching capacitors, this technique can be fabricated under standard PCB process and is effective for frequency of noise source above gigahertz.View full abstractDownload PDF (250K) -
Article type: Appendix
Pages App1-
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (92K) -
Article type: Appendix
Pages App2-
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (92K) -
Article type: Appendix
Pages App3-
Published: March 04, 2011
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (92K)
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