Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1989-06-02
1991-03-05
Laroche, Eugene R.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
3332192, 333235, 333132, H01P 1217
Patent
active
049980807
ABSTRACT:
A coupled YIG resonator device for filtering a wide band microwave signal to provide a comparatively narrow output passband. The device has an enhanced bandwidth and improved out-of-band rejection relative to a single resonator configuration. The coupled resonator device includes a plurality of YIG films sharing a common non-magnetic substrate arranged in a plane and having a gap separating adjacent films. A dielectric layer has a first surface in contact with the YIG films and a second surface where a metallic ground plane is deposited. A magnetic biasing field is applied to the plurality of YIG films such that each forms a resonator having a resonance frequency. Adjacent resonators are magnetically coupled to each other by rf linkage across the gap therebetween. The magnetic coupling causes the respective resonance frequencies of the respective resonators to move apart relative to respective resonance frequencies occurring when no coupling is present, thereby enhancing the bandwidth and improving the out-of-hand rejection of the coupled resonator circuit. The center frequency of respective resonator circuits may be tuned by prescribing differing dimensions of the respective resonator circuits and applying a uniform magnetic biasing field. A microwave channelizer is comprised of a plurality of the aforementioned coupled YIG resonators integrated into one device. The channelizer separates microwave signals of different frequencies into individual output channels.
REFERENCES:
patent: 3611197 (1971-10-01), Moore et al.
patent: 3913039 (1974-08-01), Weiner
patent: 4169252 (1979-09-01), Muskiewicz
patent: 4500858 (1985-02-01), Mezak
patent: 4528529 (1985-07-01), Huijer
patent: 4547754 (1985-10-01), Murakami et al.
patent: 4614919 (1986-09-01), Floyd
patent: 4679015 (1987-07-01), Murakami et al.
patent: 4716390 (1987-12-01), Elliott et al.
patent: 4745380 (1988-05-01), Murakami et al.
patent: 4751480 (1988-06-01), Kunz et al.
patent: 4777462 (1988-10-01), Kunz et al.
patent: 4782312 (1988-11-01), Chang et al.
Hanna, S. M. and Zeroug, S.; "Single and Coupled MSW Resonators for Microwave Channelizers", IEEE Transactions in Magnetics, Nov. 1988, pp. 2808-2810.
Hanna, S. M. and Zeroug, S.; "Frequency Sorting Based on Planar YIG Resonators", Proceedings of the 42nd Frequency Control Symposium, Jun. 1-3, 1988, pp. 112-115.
Ham Seung
LaRoche Eugene R.
Polytechnic University
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