Line transformer

Details Line transformer Line transformer

1989-11-28

1991-02-12

Kozma, Thomas J.

Inductor devices

Winding formed of plural coils

333 25, 336182, 336200, 336232, H01F 2728

Patent

active

049927698

ABSTRACT:
A line transformer suited for coupling the antenna of a nuclear magnetic resonance tomography apparatus to the RF transmission and reception circuitry is formed by a flat dielectric substrate having two congruent interconnect structures on the opposite major faces thereof. Each of the interconnect structures has two patterns of concentric conductor runs or strips, which are arranged mirror-symmetrically relative to a symmetry axis on both major faces of the substrate. The symmetry axes proceed parallel to each other, and are in registry with each other. A four port differential transformer without ferromagnetic material is obtained, which behaves symmetrically relative to the third and fourth ports, as seen from the first port as well as from the second port.

REFERENCES:
patent: 4246446 (1981-01-01), Yoshida et al.
patent: 4430758 (1984-02-01), Snyder
patent: 4816784 (1989-03-01), Rabjohn
IBM Technical Disclosure Bulletin, vol. 8, No. 5, Oct., 1965, p. 723.
"Einige grundsatzliche Betrachtungen zu Breitband-Ubertragern" Hilberg, NTZ vol. 9, 1966, pp. 527-530.
"Modeling of Circular Spiral Inductors for NMICs," Wolff et al., IEEE MTT-S Int. Microwave Synp. Dig., vol. 1, pp. 123-126.

Affiliated with

Also associated with

Rating

Line transformer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Line transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line transformer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-22820