Title :
Design procedure for ferrite microstrip DC blocks
Author :
Rosa, Maria ; Albuquerque, M.L. ; D´Assuncao, Adaildo G.
Author_Institution :
Dept. de Engenharia Eletrica, Univ. Fed. do Rio Grande do Norte, Natal, Brazil
fDate :
7/1/1998 12:00:00 AM
Abstract :
We have investigated the theoretical behavior of the microstrip dc blocks on magnetized ferrite substrates. A full-wave analysis is applied to determine the effective dielectric constants and the characteristic impedances of the fundamental eigenmodes associated with the coupled lines and their frequency dependence. Numerical results are presented for the input standing wave ratio, input reflection coefficient, and transmission loss. The influence of the applied dc magnetic bias field on the transmission characteristics of these structures is also examined. A good agreement was observed for the particular cases available in the literature
Keywords :
eigenvalues and eigenfunctions; electromagnetic wave reflection; electromagnetic wave transmission; ferrite waveguides; magnetic microwave devices; microstrip directional couplers; permittivity; applied dc magnetic bias field; characteristic impedance; coupled lines; design procedure; directional coupler; effective dielectric constants; ferrite microstrip DC blocks; frequency dependence; full-wave analysis; fundamental eigenmodes; input reflection coefficient; input standing wave ratio; magnetized ferrite substrates; transmission loss; Couplings; Dielectric constant; Dielectric substrates; Ferrites; Frequency dependence; Impedance; Magnetic analysis; Microstrip; Propagation losses; Reflection;
Journal_Title :
Magnetics, IEEE Transactions on
