Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Mohammad Najjarzadegan"'
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 66:823-827
In this brief, an open-loop double-carrier simultaneous wireless power and data transfer system is presented. Although the system is intended for implantable biomedical microsystems, it can also be used for other low-power applications such as Intern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a0d6396f055bd5cf5ed3fae1ecd4f23
https://doi.org/10.1109/tcsii.2019.2910214
https://doi.org/10.1109/tcsii.2019.2910214
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 65:1219-1223
In this brief, a method is presented to enhance the amount of power delivered to load (PDL) by making use of three-harmonic wireless power transmission while it does not occupy larger area than a conventional single-coil system. The proposed system c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9e78c6f4b77122811af2f5aa5edb92b
https://doi.org/10.1109/tcsii.2018.2791444
https://doi.org/10.1109/tcsii.2018.2791444
Autor:
Omid Shoaei, Mahmoud Shahabadi, Mohammad Najjarzadegan, Iman Ghotbi, Shahin Jafarabadi Ashtiani
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 17:803-807
To increase the efficiency of a wireless power transfer system, a method based on optimizing the product of coupling coefficient by quality factor ( kQ ) of the resonators has been proposed. In this method, efficiency is improved by tuning the resona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89f76345f172614274ea944ba8045ef1
https://doi.org/10.1109/lawp.2018.2816787
https://doi.org/10.1109/lawp.2018.2816787
Autor:
Pouyan Bassirian, S. Jafarabadi Ashtiani, Omid Shoaei, Mohammad Najjarzadegan, Mahmoud Shahabadi, Iman Ghotbi
Publikováno v:
International Journal of Circuit Theory and Applications. 46:313-327
Summary In this paper, a circuit model for the printed circular spiral resonators based on the piece electrical equivalent circuit is presented. Lumped circuit elements such as inductors, resistors, and mutual inductances are calculated using the con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::649c85c0b079fd98fc09e50f557905ea
https://doi.org/10.1002/cta.2385
https://doi.org/10.1002/cta.2385
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 63:1141-1145
Accurate estimates of the maximum swing of internal nodes in digital filters are highly desired, which is translated into better implementation on hardware in terms of area, power, and reliability. In this brief, an accurate semi-analytical method fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d25c276342ccebf536ed1db5e66cd3d
https://doi.org/10.1109/tcsii.2016.2615060
https://doi.org/10.1109/tcsii.2016.2615060
Publikováno v:
MWSCAS
Wireless battery charger for implantable biomedical devices (IMDs) with pulsed-current pattern is proposed for extending battery lifetime and faster charging. Also a compensation technique based on capacitor switching is presented in order to overcom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::328e55cff7e2852a6ec63c5adb3c3a4a
https://doi.org/10.1109/mwscas.2016.7870051
https://doi.org/10.1109/mwscas.2016.7870051
Publikováno v:
ISCAS
To implement a floating point system using fixed point representation, it is needed to determine the swing and resolution. In the fixed point representation, swing determines the Integer Bit (IB) and resolution determines the Fraction Bit. Methods fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f51feef4904c06c615cb1e8743376474
https://doi.org/10.1109/iscas.2016.7539206
https://doi.org/10.1109/iscas.2016.7539206
Publikováno v:
ISCAS
In this paper a double-carrier simultaneous power and data telemetry system with just one internal coil for biomedical implantable devices is presented. In the proposed system, back-telemetry data is transmitted by the capacitor switching at the seco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e175d784b90c8d578ad398161469ed8
https://doi.org/10.1109/iscas.2016.7538978
https://doi.org/10.1109/iscas.2016.7538978
Autor:
Iman Ghotbi, Omid Shoaei, Shahin Jafarabadi Ashtiani, Mohammad Najjarzadegan, Mahmoud Shahabadi
Publikováno v:
2015 23rd Iranian Conference on Electrical Engineering.
To decrease the variation range of the received DC voltage and wireless power transfer efficiency in capsule endoscopy system, in this paper, a new method is presented. Three orthogonal coils, overlapped partially, are used to receive magnetic power,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54a2d42f92010d4f9676ae432c97436b
https://doi.org/10.1109/iraniancee.2015.7146407
https://doi.org/10.1109/iraniancee.2015.7146407
Publikováno v:
2015 23rd Iranian Conference on Electrical Engineering.
In this paper a high-speed, high-gain operational transconductance amplifier (OTA) is designed and simulated in a 180-nm CMOS technology. The gain-boosting technique is employed in a two-stage OTA structure and a new compensation approach is develope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d747eff131342da3bd6a5dffc9bbe696
https://doi.org/10.1109/iraniancee.2015.7146423
https://doi.org/10.1109/iraniancee.2015.7146423