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- M. H. Bakr, J. W. Bandler, R M Biernacki, S. Chen, K H Madsen
- 1998 IEEE MTT-S International Microwave Symposiumâ€¦
- 1998

A new robust algorithm for EM optimization of microwave circuits is presented. The algorithm integrates a trust region methodology with aggressive space mapping (ASM). A new automated multipointâ€¦ (More)

- N. Georgieva, S. Glavic, M. H. Bakr, J. W. Bandler
- 2002 IEEE MTT-S International Microwave Symposiumâ€¦
- 2002

The adjoint variable method for frequency domain design sensitivity analysis is proposed for the optimization of wire and printed structures analyzed by the Method of Moments (MoM). We focus on theâ€¦ (More)

- M. H. Bakr, J. W. Bandler, N. Georgieva, K H Madsen
- 1999 IEEE MTT-S International Microwave Symposiumâ€¦
- 1999

We present a novel, hybrid aggressive space mapping (HASM) optimization algorithm. HASM is a hybrid approach exploiting both the trust region aggressive space mapping (TRASM) algorithm and directâ€¦ (More)

- S. Kozieł, Jie Meng, J. W. Bandler, M. H. Bakr, Q. S. Cheng
- IEEE Transactions on Microwave Theory andâ€¦
- 2009

We introduce a tuning space-mapping technology for microwave design optimization. The general tuning space-mapping algorithm is formulated, which is based on a so-called tuning model, as well as on aâ€¦ (More)

- M. H. Bakr, N. K. Nikolova
- IEEE Transactions on Microwave Theory andâ€¦
- 2004

We present a novel algorithm for efficient estimation of objective function sensitivities for time-domain transmission-line modeling (TLM) with nondispersive boundaries. The original electromagneticâ€¦ (More)

- M. H. Bakr, N. K. Nikolova
- IEEE Microwave and Wireless Components Letters
- 2003

We propose a novel adjoint variable approach to design sensitivity analysis with the frequency domain transmission line modeling (FDTLM) method. An enlarged system matrix is constructed that includesâ€¦ (More)

- M. H. Bakr, Peipei Zhao, N. K. Nikolova
- IEEE Transactions on Antennas and Propagation
- 2009

We present a novel algorithm for adjoint sensitivity analysis of time-varying responses that is based on the transmission line modeling (TLM) method. We show that by using at most one extraâ€¦ (More)

- P. A. W. Basl, M. H. Bakr, N. K. Nikolova
- IEEE Microwave and Wireless Components Letters
- 2005

We present two novel approaches for efficient estimation of objective function sensitivities related to dielectric discontinuities with time-domain transmission line modelling. Using only twoâ€¦ (More)

- P. A. W. Basl, M. H. Bakr, N. K. Nikolova
- IEEE Microwave and Wireless Components Letters
- 2005

We demonstrate, for the first time, the feasibility of the adjoint variable method (AVM) in three-dimensional (3-D) time-domain transmission-line modeling (TLM). Using only two 3-D simulations of theâ€¦ (More)

- N. K. Nikolova, H.W. Tam, M. H. Bakr
- IEEE Transactions on Microwave Theory andâ€¦
- 2004

We propose an adjoint-variable approach to design-sensitivity analysis with time-domain methods based on structured grids. Unlike conventional adjoint-based methods, it does not require analyticalâ€¦ (More)