Ultra-wide bandwidth field stacking balun

Details Ultra-wide bandwidth field stacking balun Ultra-wide bandwidth field stacking balun

1997-06-16

1999-08-31

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

333128, H01P 510

Patent

active

059458909

ABSTRACT:
A balun structure is formed by stripline or square coaxial transmission ls and stacked dielectric substrates. The invention provides a technique for building a balun that maintaines low insertion loss and good balance for DC-to-GHz applications. The impedance ratio of the balanced transmission line to the unbalanced transmission line is N.sup.2 :1, where N is the number of microstrip transmission lines in the balun. This will prevent the signal loss that occurs when ferrite cores are placed around the transmission lines.

REFERENCES:
patent: 2877427 (1959-03-01), Butler
patent: 4725792 (1988-02-01), Lampe, Jr.
patent: 5172082 (1992-12-01), Livingston et al.
patent: 5379006 (1995-01-01), McCorkle
patent: 5523728 (1996-06-01), McCorkle

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