Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Shigeki Obote"'
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 129:446-454
In this paper, we study on the maximum read range of 2.45GHz passive RFID tag when metallic plate existed behind it. From a theoretical analysis, computer simulation and experiment result, they reveal that if the RFID tag and metallic plate are separ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb15f2d1c14d2dc02db538f910fceba0
https://doi.org/10.1541/ieejfms.129.446
https://doi.org/10.1541/ieejfms.129.446
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :2851-2857
A 2.45-GHz-band small passive radio-frequency identification (RFID) tag consists of a small loop antenna and chip, and its size is several millimeters. Because of the tag's poor impedance-matching characteristic and radiation efficiency, an ordinary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3b87c86f25231b2c8532eea34c2601f
https://doi.org/10.1587/transfun.e92.a.2851
https://doi.org/10.1587/transfun.e92.a.2851
Publikováno v:
Wireless Personal Communications. 35:353-364
A tapped delayed line adaptive array antenna (TDL-AAA) and a space-temporal simultaneous processing equalizer (ST-SPE) are proposed as simple space-temporal equalizers based on minimum mean square error (MMSE) criterion. The ST-SPE has a compact hard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::781d24960813e4203534a1a5db27c541
https://doi.org/10.1007/s11277-005-7534-7
https://doi.org/10.1007/s11277-005-7534-7
Publikováno v:
Electronics and Communications in Japan (Part I: Communications). 87:28-38
When a frequency offset exists in an MMSE-SMI adaptive array antenna, the correlation vector varies and as a result the SINR varies and the average BER is degraded. In order to resolve this problem, a method for compensation of the frequency offset a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::350d4edea0343115630414f90810160b
https://doi.org/10.1002/ecja.10220
https://doi.org/10.1002/ecja.10220
Autor:
Shigeki Obote, Kenichi Kagoshima
Publikováno v:
Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 86:1-12
If there is a frequency offset in the local oscillator circuit in QPSK demodulation, the BER is degraded. Previously, methods for estimating this frequency offset have been proposed. However, few techniques that have been studied can estimate this of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::befef8589388dcadfe2bde784f72f33c
https://doi.org/10.1002/ecjc.10089
https://doi.org/10.1002/ecjc.10089
Publikováno v:
Electronics and Communications in Japan (Part I: Communications). 87:59-67
An important problem of the adaptive array antenna proposed previously in regard to its installation is the increased equipment size. This is because the adaptive array antenna requires as many RF circuits as the number of antenna elements. In this p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab2ba5b11e80418e3bfd374d89bcd5f5
https://doi.org/10.1002/ecja.10142
https://doi.org/10.1002/ecja.10142
Publikováno v:
IEICE Transactions on Communications. :2653-2655
In this paper, we present a sequentially rotated array antenna with a rectangular patch MSA fed by an L-probe. Since it's important to decrease couplings between patch elements in order to suppress the cross-polarization level, rectangular patches wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfb15ce8e40dac4ee531d32f33d9f687
https://doi.org/10.1587/transcom.e94.b.2653
https://doi.org/10.1587/transcom.e94.b.2653
Publikováno v:
International Journal of Electronics. 86:1377-1384
In this paper, we propose a digital signal processing type frequency locked loop (DSP-FLL) using a frequency difference detector (FDD). Since the DSP-FLL is controlled by the frequency, the pole of the voltage controlled oscillator vanishes in the ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6bc526a09f65f3e07dec3e7b0fcb6df
https://doi.org/10.1080/002072199132662
https://doi.org/10.1080/002072199132662
Publikováno v:
Analog Integrated Circuits and Signal Processing. 21:117-126
In this paper, we propose a new speedup method of frequency switching time of the prescaler PLL frequency synthesizer using (N+ {{1}\over {2}}) pulse swallow programmable divider. The (N+{{1}\over {2}}) pulse swallow programmable divider can set half
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::877ef2adba331d53e8fda3b5c2b7f691
https://doi.org/10.1023/a:1008361421654
https://doi.org/10.1023/a:1008361421654
Publikováno v:
International Journal of Electronics. 84:123-130
A new speed-up method of lock up time is proposed for the phase locked loop (PLL) frequency synthesizer in the local oscillation circuit of a radio receiver. Doubling of reference frequency is achieved by using a new (NN+ 1/2) programmable divider wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26675e617eaddabc4f006a3fbb188a42
https://doi.org/10.1080/002072198134887
https://doi.org/10.1080/002072198134887