A new design procedure for single-layer and two-layer three-line baluns

Author

Cho, Choonsik ; Gupta, K.C.

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA

Volume

46

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

2514

Lastpage

2519

Abstract

This paper describes a design procedure for a class of three-line baluns. It is shown that the three-line balun can be considered as a combination of two identical couplers. Thus, the method developed here uses the design of couplers with an appropriate coupling factor for designing this class of baluns. The derivation leads to the normal mode parameters for the three coupled lines. Physical dimensions are obtained from these parameters. This procedure has been implemented for two-layer configurations and verified by comparison with results from a full-wave electromagnetic simulation and experimental measurement

Keywords

baluns; directional couplers; coupling factor; full-wave electromagnetic simulation; identical couplers; normal mode parameters; single-layer three-line baluns; two-layer three-line baluns; Antenna measurements; Bandwidth; Circuit simulation; Coupling circuits; Directional couplers; Impedance matching; MMICs; Microwave integrated circuits; Monolithic integrated circuits; Nonhomogeneous media;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.739242

Filename

739242