Impedance conversion transformer

Details Impedance conversion transformer Impedance conversion transformer

1984-11-20

1986-12-23

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

333 32, H01P 510

Patent

active

046315047

ABSTRACT:
An impedance conversion transformer which comprises a ferrite core and a pair of coils wound about the ferrite core. The ferrite core has permittivity which reduces in proportion to increase in frequency within a band used and the pair of coils are wound in a bifilar arrangement so that the electric length of the coils becomes half-wave length. One of the coils has the opposite terminals electrically connected to each other and grounded and impedance variation and balanced to unbalanced conversion are achieved between the opposite terminals of the other coil.

REFERENCES:
patent: 3066266 (1962-11-01), Fisher
patent: 3114120 (1963-12-01), Heck
patent: 3428886 (1969-02-01), Kawashima et al.
patent: 3731238 (1973-05-01), Jones et al.
patent: 4121180 (1978-10-01), Greenway

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