Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1983-10-24
1985-07-02
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333135, 333218, 333230, 333 99MP, H01P 512, H01P 120
Patent
active
045271372
ABSTRACT:
A frequency multiplier for electromagnetic waves in which multiples of the input frequency propagate, while the input frequency evanesces. A rectangular waveguide or other suitable wave conveying element with a cut-off frequency above the input frequency but below the output frequency contains the multiplying structure. The input frequency is multiplied using a post located in the waveguide or other element adjacent to the source of input waves. The post may define a multiplier gap between one of its surfaces and a wall of the waveguide or other element, in which case the multiplier gap may contain a multipactor between its surfaces which generates multiples of the input frequency. The multiplier gap may alternatively contain a non-linear element responsive to a high electric field, such as a ferroelectric material, which also generates multiples of the input frequency. Alternatively, the post may be surrounded by a non-linear element of ferromagnetic material responsive to a strong magnetic field. In either embodiment, waves at the same frequency as the input waves cannot propagate, but waves above the cut-off frequency propagate through the waveguide or other element to an output aperture.
REFERENCES:
patent: 3041524 (1962-06-01), Karayianis et al.
patent: 3223918 (1965-12-01), Ludwig et al.
patent: 3631331 (1971-12-01), Fairley et al.
Dahele et al., Slimguide Frequency Multipliers for Microwave Applications, lectrical Communication, vol 49, No. 1, 1974, pp. 65-71.
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-19, No. 3, Mar. 1971, George F. Craven and C. K. Mok, "The Design of Evanescent Mode Waveguide Bandpass Filters for a Prescribed Insertion Loss Characteristic".
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-17, No. 12, Dec., 1969, Kenneth L. Kotzebue and George L. Matthaei, "The Design of Broad-Band Frequency Doublers Using Charge-Storage Diodes".
Proceedings of the IEEE, vol. 56, No. 2, Feb., 1968, Ronald H. Johnston and A. R. Boothroyd, "Charge Storage Frequency Multipliers".
Microwaves, Mar. 1982, John W. Archer, et al., "Harmonic Generators have High Efficiency".
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-17, No. 6, Jun. 1969, Yoshio Machi, "Microwave Frequency Multiplication Using Hot Electrons in Semiconductors".
Gensler Paul
Goldberg Edward
Lane Anthony T.
Murray Jeremiah G.
The United States of America as represented by the Secretary of
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