Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Luiz Fernando M. Conrado"'
Publikováno v:
Microwave and Optical Technology Letters. 52:1337-1340
This article describes the complete experimental characterization of a 10-mm long planar transmission-line transformer (TLT) in a multilayered high dielectric constant film structure. The multilayered configuration was obtained by deposition of a hig
Autor:
Walter Margulis, M.C.R. Carvalho, Luiz Fernando M. Conrado, Rodolfo A. A. Lima, Luciene S. Demenicis
Publikováno v:
Microwave and Optical Technology Letters. 49:521-524
A CPW linear resonator method for the microwave characterization of high dielectric constant films
Publikováno v:
Microwave and Optical Technology Letters. 47:290-293
In this paper, we propose a planar transmission-line impedance transformer (TLT) with a multilayered configuration obtained by deposition of high-dielectric-constant thin films over the conductors printed on conventional bulk substrates. The resultin
Publikováno v:
Microwave and Optical Technology Letters. 37:174-177
Transmission-line transformers with different impedance variation patterns and printed on substrates with very high dielectric constant (er = 80) are compared and the influence of the total length is studied. The propagation characteristics of the ta
Publikováno v:
Microwave and Optical Technology Letters. 32:275-278
The propagation characteristics of enclosed microstrip-slot and coplanar waveguide-slot lines printed on substrates with a very high dielectric constant (er=40, er=80, and er=100, respectively) are investigated for a wide range of geometric parameter
Publikováno v:
Microwave and Optical Technology Letters. 14:252-255
The task of maximizing channel capacity and covered distance for optical analog TV systems while maintaining a desired CNR (carrier-to-noise ratio) is discussed. The focused system works with a subcarrier located in the 2-GHz range and uses the AM-VS
Publikováno v:
Microwave and Optical Technology Letters. 11:215-221
Publikováno v:
Microwave and Optical Technology Letters. 22:85-87
The propagation of very short electrical pulses on tapered nonuniform planar transmission lines is rigorously investigated. The application field concerns the circuitry for impedance matching of semiconductor lasers and photodiodes in high-speed opto
Autor:
D. L. A. Seixas, Luiz Fernando M. Conrado, Luciene S. Demenicis, M.C.R. Carvalho, Walter Margulis
Publikováno v:
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678).
The influence of a transmission line transformer in the performance of optical systems is theoretically investigated. After many eye-diagram simulations at 2.5 Gbit/s and 10 Gbit/s repetition rates, it has been concluded that the use of the transmiss
Autor:
Luciene S. Demenicis, Luiz Fernando M. Conrado, M.C.R. Carvalho, D. L. A. Seixas, Walter Margulis
Publikováno v:
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678).
The investigation of the propagation characteristics of short electrical pulses on transmission line transformers (TLT) was performed. The TLT considered here matches 50 /spl Omega/ to 3.5 /spl Omega/ and has Tchebysheff profile with 20 dB return los