Investigations of the Isolators Containing Microstrip FCL Section

Author

Marynowski, Wojciech ; Kusiek, Adam ; Mazur, Jerzy

Author_Institution

Gdansk Univ. of Technol., Gdansk

fYear

2007

fDate

24-25 April 2007

Firstpage

1

Lastpage

6

Abstract

This paper describes the design of the isolator containing longitudinally magnetized microstrip ferrite coupled lines (FCL). In the sandwich structure of circuit the ferrite slab was introduced as an overlay. The termination in the isolator circuit was realized in two different ways: as a coaxial load and as a planar microstrip structure with lumped resistor. The results of the simulation were experimentally verified. Between simulations and measurements a good agreement was achieved. Better results was obtained for isolator with the coaxial load. The experiment showed average transmission losses better than -2dB in the band from 10.4 to 15GHz. The average isolation was better than -15dB. The reflection losses in one port were better than in the other one (below -15dB and average -12dB).

Keywords

ferrite isolators; losses; microstrip components; coaxial load; ferrite slab; frequency 10.4 GHz to 15 GHz; isolator circuit; longitudinally magnetized microstrip ferrite coupled lines; lumped resistor; planar microstrip structure; reflection losses; sandwich structure; transmission losses; Circuit simulation; Coaxial components; Coupling circuits; Ferrites; Isolators; Microstrip; Propagation losses; Resistors; Sandwich structures; Slabs; Isolator; ferrite; nonreciprocal devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Radioelektronika, 2007. 17th International Conference

Conference_Location

Brno

Print_ISBN

1-4244-0821-0

Electronic_ISBN

1-4244-0822-9

Type

conf

DOI

10.1109/RADIOELEK.2007.371690

Filename

4234285