Wilton Ney Do Amaral Pereira
 Write for Microwaves & RF
3 results found for Wilton Ney Do Amaral Pereira, displaying items 1 - 3

November 2009   [Components]
Examine Balanced Twisted Bifilar Lines
Balanced twisted bifilar transmission lines have broad applications for any circuits in which impedance transformations are required. By using a vector network analyzer (VNA), it is possible to measure the characteristic impedance of these balanced transmission lines in order to design desired impedance transformations. Measurements with a VNA can be made by using a balancedunbalanced (balun) transformer that converts a balanced network to an unbalanced network. In...

January 2008   [Test & Measurement]
Determine Twisted-Line Characteristic Impedance
This approach shows how to calculate and measure the characteristic impedance of balanced twisted bifilar transmission lines using a commercial vector network analyzer. ANTONIO ALVES FERREIRA JUNIOR Electronic and Electrotechnical Department National Telecommunications Institute (INATEL), 510 João de Camargo Ave. 37540-000, Santa Rita do Sapucaí, Minas Gerais, Brazil; e-mail: ...