YIG tuned band reject filter for 2-18 GHz with full one-quarter

Details YIG tuned band reject filter for 2-18 GHz with full one-quarter YIG tuned band reject filter for 2-18 GHz with full one-quarter

1991-10-24

1993-06-22

Pascal, Robert J.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

3332192, H01P 1218

Patent

active

052219127

ABSTRACT:
A YIG notch filter using full RF coupling loops and having a notch filter center frequency tunable as high as 18 GHz comprising a plurality of undoped YIG spheres of much smaller volume than used in the prior art and linearly arranged in a air gap. The spheres are suspended in cavities in a nonmagnetic block which are spaced much more closely than in the prior art. The 50 ohm stripline impedance inverters formed on a substrate and connecting the RF coupling loops of the spheres used in the prior art are eliminated. The quarter-wavelength impedance inverter function necessary to fabricate a notch filter is implemented by using the RF coupling loops themselves and measuring the distance from centerline to centerline of adjacent RF coupling loops. Twin insulated wires with up to one diameter separation for the RF coupling loops are preferred with the wires soldered together between the spheres.

REFERENCES:
patent: 4179674 (1979-12-01), Keane et al.
patent: 4216447 (1980-08-01), Keane et al.
patent: 4247837 (1981-01-01), Mezak et al.
patent: 4480238 (1984-10-01), Iwasaki
patent: 4506240 (1985-03-01), Shores et al.
Keane, W. J., "Narrow-Band YIG Filters Aid Wide-Open Receivers", Microwaves, Sep., 1978, p. 50.
"6-12 GHz YIG-Tuned Notch Filter with 60 GHz Rejection Bandwidth", Microwave Journal, Apr., 1986, p. 212.
Keane, "Design Criteria for YIG Tuned Band-Reject Filters", Ferretec, Inc., pp. 1-17, Apr. 1989.

Affiliated with

Also associated with

Rating

YIG tuned band reject filter for 2-18 GHz with full one-quarter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with YIG tuned band reject filter for 2-18 GHz with full one-quarter , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and YIG tuned band reject filter for 2-18 GHz with full one-quarter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1443523