Strip-line-core transformer

Details Strip-line-core transformer Strip-line-core transformer

1987-06-30

1988-11-15

Kozma, Thomas J.

Inductor devices

With temperature modifier

Heat exchanging surfaces

333 25, 333 32, 336221, 336223, 336233, H01F 7708, H01F 1900

Patent

active

047852739

ABSTRACT:
A broadband, high power rf transformer is made by winding a tapered strip-line transmission-line conductor and dielectric material through two parallel slots, formed axially and symmetrically spaced apart, through a solid right cylinder of low loss magnetic material. Low inductance strip lines are used as leads. A thin sheet of high thermal conductivity material may be added in such a way as to augment heat flow with negligible degradation of rf properties. The design is particularly advantageous at frequencies from 1 MHz to 1000 MHz at pulse powers to several kilowatts at impedances from 2.OMEGA. to 75.OMEGA..

REFERENCES:
patent: 2883604 (1959-04-01), Mortimer
patent: 3020415 (1962-02-01), Dortort
patent: 3025480 (1962-03-01), Guanella
patent: 3050634 (1962-08-01), Dortort
patent: 3195076 (1965-07-01), Morrison
patent: 3464042 (1969-08-01), Raman
patent: 3766499 (1973-10-01), Dillenberger
patent: 3783415 (1974-01-01), Koskin et al.
patent: 3826967 (1974-07-01), Wilkinson et al.
RCA Technical Notes, "VHF/UHF Balun", Wlasuk, RCATN No. 704, Jan 1967, 336-221.
"Broadband Transformers and Power Combining Techniques for R.F." H. Granberg, AN 749 Application Note, Motorola Semiconductor Products Inc. 1975, pp. 1-10.

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