Wave transmission lines and networks – Long lines – Waveguide type
Patent
1995-12-07
1999-03-30
Lee, Benny T.
Wave transmission lines and networks
Long lines
Waveguide type
333242, 333248, H01P 316
Patent
active
058894497
ABSTRACT:
An electromagnetic wave propagation structure, suitable for the transmission of an electromagnetic wave and the formation of resonators within filters, is constructed of both high and low dielectric-constant materials wherein the high dielectric-constant is in excess of approximately 80 and the low dielectric-constant is less than approximately 2. A boundary between the high and the low dielectric-constant materials serves as an electric wall to waves propagating in the low dielectric-constant material and as a magnetic wall to waves propagating in the high dielectric-constant material. This permits substitution of the high dielectric-constant material for metal elements, such as resonators and feed structures in filters. Furthermore, the use of a cladding of dielectric material of one of the foregoing dielectric ranges about a core of material of the other of the foregoing dielectric ranges enables construction of waveguides having rectangular and circular cross-sections. Microstrip and stripline structures with substitution of the high dielectric-constant material for the harmonic elements may also be constructed.
REFERENCES:
patent: 3028565 (1962-04-01), Walker et al.
patent: 3386043 (1968-05-01), Marcatili et al.
patent: 4216449 (1980-08-01), Kach
patent: 4293833 (1981-10-01), Popa
patent: 4463330 (1984-07-01), Yoneyama
patent: 4489293 (1984-12-01), Fiedziuszko
patent: 4521746 (1985-06-01), Hwan et al.
patent: 4800350 (1989-01-01), Bridges et al.
patent: 5136268 (1992-08-01), Fiedziuszko et al.
patent: 5172084 (1992-12-01), Fiedziuszko et al.
patent: 5187461 (1993-02-01), Brommer et al.
Comte, R. et al., "New concept for low-loss microwave devices", Electronics Letters; 3 Mar. 1994, vol. 30, No. 5; pp. 419, 420; Copy in L333/219.1.
T. D. Iveland: "Dielectric Resonator Filters for Application in Microwave Integrated Circuits", IEEE Trans. on Microwave Theory and Techniques, vol. 19, No. 7, Jul. 1971, pp. 643-652.
A. Takasugi et al.: "A Surface-Mountable Ceramic 3-DB Directional Coupler", Electronics & Communications in Japan, Part II--Electronics, vol. 77, No. 4, Apr. 1994, pp. 51-57.
A. D. Krall et al.: "Dielectric Transmission Line", Navy Technical Disclosure Bulletin, vol. 7, No. 1, Sep. 1981, pp. 33-37.
"Multi-Layered Planar Filters Based on Aperature Coupled, Dual Mode Microstrip or Stripline Resonators" by J.A. Curtis and S.J. Fiedzuiszko, Jun. 1992 IEEE MTT-S Digest, pp. 1203-1206.
Lee Benny T.
Space Systems Loral, Inc.
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