Suspended substrate strip line filters with flat delay

Author

Zabalawi, I.H.

Author_Institution

Dept. of Electr. Eng., Jordan Univ., Amman, Jordan

fYear

1988

fDate

7-9 Jun 1988

Firstpage

2777

Abstract

A procedure has been developed for designing narrowband suspended substrate stripline (SSS) microwave filters in the comb form. The design is based on an even-degree lowpass lumped prototype network of a ladder nature. An auxiliary coupling has been introduced to flatten the delay characteristics. A frequency transformation has been worked out to transform the characteristics of the lumped filter to the microwave region. Explicit formulas have been derived for physical dimensions of the SSS lines from the relationships between the characteristic admittance and the static capacitances of the lines and the element values of the prototype network

Keywords

ladder networks; microwave filters; strip line components; auxiliary coupling; characteristic admittance; comb form; delay characteristics; even-degree lowpass lumped prototype network; flat delay; frequency transformation; ladder nature; microwave filters; microwave region; narrowband suspended substrate stripline; static capacitances; Admittance; Delay; Dielectric substrates; Microstrip filters; Microwave filters; Microwave technology; Narrowband; Prototypes; Satellites; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1988., IEEE International Symposium on

Conference_Location

Espoo

Type

conf

DOI

10.1109/ISCAS.1988.15515

Filename

15515