Broadband Implementation of MLFMA Using Approximate Scaled Diagonalization of the Green's Function

Broadband solutions of potential integral equations with NSPWMLFMA Khalichi, Bahram; Ergül, Özgür Salih; Ertürk, Vakur B. (Institute of Electrical and Electronics Engineers (IEEE), 2019-06) In this communication, a mixed-form multilevel fast multipole algorithm (MLFMA) is combined with the recently introduced potential integral equations (PIEs), also called as the A-phi system, to obtain an efficient and accurate broadband solver that can be used for the solution of electromagnetic scattering from perfectly conducting surfaces over a wide frequency range including low frequencies. The mixed-form MLFMA uses the nondirective stable planewave MLFMA (NSPWMLFMA) at low frequencies and the conventio...
Broadband Multilevel Fast Multipole Algorithm Based on an Approximate Diagonalization of the Green's Function Ergül, Özgür Salih (2015-07-01) We present a broadband multilevel fast multipole algorithm (MLFMA) for fast and efficient solutions of three-dimensional multiscale problems involving large objects with dense discretizations. The proposed solver is based on the approximate diagonalization of the Green's function using scaled spherical and plane waves, leading to stable interaction computations for arbitrarily short distances in terms of wavelength. Despite contradictory requirements on the scaling factor that limit the accuracy of the diag...
Broadband impedance matching by parametric approach using simulated annealing Önen, A. Pınar; Ünver, Zafer; Department of Electrical and Electronics Engineering (1990)
BROADBAND HIGH EFFICIENCY RF POWER AMPLIFIER DESIGN BASED ON MODIFIED CLASS-J APPROACH WITH APPLICATIONS USING GAN HEMT TECHNOLOGY Koç, Murat; Demir, Şimşek; Department of Electrical and Electronics Engineering (2021-9-29) RF power amplifiers have been the essential elements of any transmit/receive block. Especially in the transmit chain, some applications require high RF power, such as radar, jammer, telecommunication signals targeting a wide range of coverage. High power requirements in RF broadcast mean high supply power to feed RF PA. The efficiency parameter of a high-power transmission system becomes an issue due to heating problems and performance degradation depending on rising temperatures. The heating problem is com...
Broadband frequency divider using microwave varactor diodes. Ilıcak, A Sinan; Department of Electrical Engineering (1985)

Citation Formats

B. Karaosmanoglu and Ö. S. Ergül, “Broadband Implementation of MLFMA Using Approximate Scaled Diagonalization of the Green’s Function,” 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36562.