Wave transmission lines and networks – Coupling networks – With impedance matching
Patent
1992-03-27
1992-12-22
Gensler, Paul
Wave transmission lines and networks
Coupling networks
With impedance matching
333 34, 333 35, H01P 508
Patent
active
051736667
ABSTRACT:
A microstrip-to-inverted-microstrip transition for providing a low-loss cection of a microstrip to an inverted microstrip in planar microwave devices. One embodiment includes tapered dielectric and conductor sections that provide a gradual or tapered change in the effective dielectric constant and a substantially constant characteristic impedance across the transition. A second embodiment employs a series of microstrip transformers that are one-quarter wavelength long. The transformers have dielectric members that have successively decreasing dielectric constants to provide a gradual dielectric match. The geometries of the microstrip transformers are chosen so that there will be an impedance match across the transition. A third embodiment employs the microwave interaction that takes place with the supporting dielectrics of the inverted microstrip to produce a dielectric match. The conductor spacing of the inverted microstrip is adjusted such that the effective dielectric constant of the inverted microstrip is close to or equal to that of the microstrip.
REFERENCES:
patent: 2800634 (1957-07-01), Grieg et al.
patent: 3904997 (1975-09-01), Stinehelfer, Sr.
patent: 5057798 (1991-10-01), Moye et al.
Babbitt Richard W.
Koscica Thomas E.
Rachlin Adam
Anderson William H.
Gensler Paul
The United States of America as represented by the Secretary of
Zelenka Michael
LandOfFree
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