Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Patent
1997-07-30
1999-05-11
Gensler, Paul
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
333995, H01P1/32
Patent
active
059031980
ABSTRACT:
In a planar gyrator, parallel transmission lines are positioned proximal to a magnetized gyrotropic substrate. Input and output transducers couple the ends of the transmission lines to corresponding input and output ports. The input and output transducers are configured to excite first and second partial wave fields on the transmission lines of similar or different phases respectively. The wave fields, in turn, interact gyromagnetically with the substrate, such that the resultant difference in phase change for a first wave propagating from the first to the second port and a second wave propagating from the second to the first port is an odd-integer multiple of 180 degrees. Alternatively, if the magnetization of the substrate is reversed, the phase of a wave propagating from the first to the second port is changed by 180 degrees. The planar gyrator is amenable to application in miniaturized planar microwave devices, for example as a magnetically-controlled phaser or switch, or as a component in a circulator or isolator implemented in planar microwave technology.
REFERENCES:
patent: 3986149 (1976-10-01), Harris et al.
patent: 4521753 (1985-06-01), Schloemann
patent: 5223808 (1993-06-01), Lee et al.
patent: 5484765 (1996-01-01), Dionne et al.
patent: 5808518 (1998-09-01), McKenzie, III et al.
Tellegen, B.D.H., (Apr., 1948) "The Gyrator, a New Electric Network Element," Phillips Research Reports 3: 81-101.
Polder, D., (1949) "On the Theory of Ferromagnetic Resonance," Phil Mag, 40: 99.
Hogan, C. L. (Jan., 1952) "The Ferromagnetic Faraday Effect at Microwave Frequencies and its Applications," The Bell System Technical Journal 31(1).
Hogan, C. L. (Jan., 1953) "Ferromagnetic Faraday Effect at Microwave Frequencies and its Applications," Reviews of Modern Physics 25(1): 253-263.
Carlin, H. J. (May, 1955) "On the Physical Realizability of Linear Non-Reciprocal Networks," Proceedings of the IRE: 608-616.
Weiss, J.A. (May, 1960) "Tetrahedral Junction," Journal of Applied Physics Supplement 31(5): 168S-169S.
Mesa, F. (1991) "Rigurous Analysis of Non-Reciprocal Slow-Wave Planar Transmission Lines," 21st European Microwave Conference 1: 229-234.
Fitzgerald, W. D. (1992) "A 35-GHz Beam Waveguide System for the Millimeter-Wave Radar,"The Lincoln Laboratory Journal 5(2): 245-271.
Lax, B. (Dec., 1993) "Quasi-Optical Ferrite Reflection Circulator," IEEE Transactions on Microwave Theory and Techniques 41(12): 2190-2197.
Weiss, J. A. et al. (Jan. 10, 1994) "Quasi-optical Reflection Circulator: Progress in Theory and Millimeter-Wave Experiments," International Society for Optical Engineering, 2211: 416-427.
Bloch, F., et al., "The Nuclear Induction Experiment" Phys. Rev. vol. 70, Nos. 7 & 8, (1946), pp. 474-485.
Kittel, C., "On the Theory of Ferromagnetic Resonance Absorption," Phys. Rev. vol. 73, No. 2, (1948) pp. 155-161.
Kittel, C., "On the Gyromagnetic Ratio and Spectroscopic Splitting Factor of Ferromagnetic Susbstances," Phys. Rev. vol. 76, No. 6, (1949) pp. 743-748.
Ramsey, N.F. "Paramagnetic and Ferromagnetic Resonance," Nuclear Moments, John Wiley & Sons, Inc., (1953), pp. 129-136.
Lax, B., et al., "Farraday-Rotation Devices: Physical Description," Microwave Ferrites and Ferrimagnetics; McGraw-Hill, Sec. 12-1, (1962) pp. 544-549.
Roome, G.T., et al., "Thin Ferrite Devices for Microwave Integrated Circuits," IEEE Transactions on Microwave Theory and Techniques, vol. MIT-16, No. 7, (1968) pp. 411-420.
Rosenbaum, F.J., "Integrated Ferrimagnetic Devices," Advances in Microwaves,vol. 8, Academic Press (1968) pp. 203-294.
Gensler Paul
Massachusetts Institute of Technology
LandOfFree
Planar gyrator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Planar gyrator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planar gyrator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-248108