Reduced length tuned filter having transverse oriented coils

Details Reduced length tuned filter having transverse oriented coils Reduced length tuned filter having transverse oriented coils

1996-12-12

1998-06-23

Lee, Benny

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333175, 333185, H03H 701

Patent

active

057709831

ABSTRACT:
The invention provides a tuned filter of reduced overall length in which two coils (air core inductors) are placed side by side, in mounting locations that are transverse with respect to the longitudinal direction of the filter, instead of in-line or diagonal to each other. The transverse mounting of the coils, depending on the number of poles in the filter, results in a reduction in the overall length of the filter to at least 25% to greater than 50% than can be realized in comparison to conventional in-line filter designs. In addition, the transverse mounting configuration results in an improvement in the electrical performance for both the in band and high frequency responses of the tuned notch filter.

REFERENCES:
patent: 2982928 (1961-05-01), Kall
patent: 2994844 (1961-08-01), Niederman
patent: 3644848 (1972-02-01), Kruczek
patent: 4451803 (1984-05-01), Holdsworth et al.
patent: 4672337 (1987-06-01), Thibeault
patent: 4701726 (1987-10-01), Holdsworth
patent: 4845447 (1989-07-01), Holdsworth
patent: 4901043 (1990-02-01), Palinkas
patent: 5150087 (1992-09-01), Yoshie et al.
patent: 5278525 (1994-01-01), Palinkas

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