Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Hamid Vahdati"'
Publikováno v:
مهندسی مخابرات جنوب, Vol 11, Iss 44, Pp 1-8 (2024)
A novel framework of feature generation for Content based image retrieval (CBIR) is proposed. This system is realized on Cyclic transform Analysis (CTA). It introduces statistical descriptors in the signals frequency domain. Then the CT of data is co
Externí odkaz:
https://doaj.org/article/cba9b727c07746e4bb65de3a7375bba0
Publikováno v:
Electrica, Vol 22, Iss 2, Pp 258-266 (2022)
Externí odkaz:
https://doaj.org/article/5003d96cf6fa4bf2991fce74aa38c1e5
Publikováno v:
Wireless Personal Communications. 126:197-208
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64afd030a402706dc94d24c7c8751a76
https://doi.org/10.1007/s11277-022-09740-9
https://doi.org/10.1007/s11277-022-09740-9
Autor:
Hamid Vahdati, Abdolali Abdipour
Publikováno v:
Progress In Electromagnetics Research. 80:241-252
In this paper a complete analysis to the stability of a microwave oscillator with distributed element resonator is presented. In this type of oscillators, the circuit description changes form ordinary differential equations to partial deferential equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eb207b97402c6946390d0f8e83ec238
https://doi.org/10.2528/pier07111701
https://doi.org/10.2528/pier07111701
Autor:
Hamid Vahdati, Abdolali Abdipour
Publikováno v:
Progress In Electromagnetics Research. 79:179-193
In this paper an approach for stability analysis of microwave oscillators is proposed. Using the perturbation theory and averaging method, a theorem which relates the oscillation stability to the stability of the periodic average of the circuit's Jac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbe194a1100c739be89cf50e4056b56c
https://doi.org/10.2528/pier07100101
https://doi.org/10.2528/pier07100101
Autor:
Hamid Vahdati, Abdolali Abdipour
Publikováno v:
IEICE Transactions on Electronics. :275-277
In this paper, a criterion for nonlinear stability analysis of microwave oscillator has been devised. The circuit envelope method has been used for analyzing the perturbed circuit. The proposed approach is evaluated by analyzing the nonlinear stabili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::250fd680f9996e78827915b4900d30ad
https://doi.org/10.1587/transele.e92.c.275
https://doi.org/10.1587/transele.e92.c.275
Publikováno v:
2006 IEEE International Conference on Semiconductor Electronics.
In this paper, the Lyapunov function is used for nonlinear stability analysis of microwave oscillators. Using this method, both the instability of DC bias point and the stability of steady state oscillation can be analyzed. The successes of Lyapunov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::367c833b74c257309d8f1a132cde60f0
https://doi.org/10.1109/smelec.2006.380771
https://doi.org/10.1109/smelec.2006.380771
Autor:
Hamid Vahdati, Abdolali Abdipour
Publikováno v:
2006 International Conference on Microwaves, Radar & Wireless Communications.
In this paper a new method for determination of output spectrum of an oscillator is introduced. This method is based on the phase plane description of oscillator. Using this method, the oscillator spectrum can be determined without solving any nonlin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::203c6f80349d60b10aa631dd294586d3
https://doi.org/10.1109/mikon.2006.4345320
https://doi.org/10.1109/mikon.2006.4345320
Autor:
Abdolali Abdipour, Hamid Vahdati
Publikováno v:
2005 Asia-Pacific Microwave Conference Proceedings.
In this paper generalization of Kurokawa stability criterion is developed. The proposed approach considers both the static and dynamic nonlinear elements of the device model, while the original Kurokawa' s criterion takes into account only the static
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8aececbc9b8bc3c1aa13ca3603ea940f
https://doi.org/10.1109/apmc.2005.1606447
https://doi.org/10.1109/apmc.2005.1606447