Wave transmission lines and networks – Coupling networks – With impedance matching
Patent
1989-07-28
1990-07-31
Gensler, Paul
Wave transmission lines and networks
Coupling networks
With impedance matching
333245, 336192, 336195, H03H 738
Patent
active
049453190
ABSTRACT:
An improved physical implementation of a high frequency impedance transformer circuit formed from three coaxial transmission line segments is described. In a preferred embodiment, each transmission line segment is in the form of a one and a half turn coil wrapped around a ferrite core. The ends of the coaxial transmission line segments extend through holes in a small PC board and planar conductors thereon. The ends of the transmission line shields are circumferentially soldered to some planar conductors on the board and the center conductors of the coaxial line segments are soldered to adjacent planar conductors on the board in such a way as to provide the desired circuit in a very compact and rugged arrangement.
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Barabas, "On An Ultrabroad-Band Hybrid Tee", IEEE Transactions on Microwave Theory & Techniques, vol. MTT-27, No. 1, Jan. 1979, pp. 58-64.
Gensler Paul
Handy Robert M.
Motorola Inc.
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