Wave transmission lines and networks – Long lines – Strip type
Patent
1988-06-13
1989-10-03
Gensler, Paul
Wave transmission lines and networks
Long lines
Strip type
333222, H01P 308
Patent
active
048719889
ABSTRACT:
This invention relates to an increase in the low longitudinal resonance frequencies of microwave transmission lines known as symmetrical lines, comprising two coplanar and parallel narrow conductive strips. According to the invention, the line further comprises a longitudinal and wide planar conductive strip which is parallel to one of the narrow strips at a sufficient distance not to substantially disturb the characteristic impedance of the initial symmetrical line and which is connected to the narrow strip by small planar end conductors thereby forming a longitudinal flat cavity. The cavity offers a first resonance frequency much greater than those of the initial symmetrical line and consequently affords a higher useful frequency bank of signals to be transmitted. The end conductors allow the line to be connected to coaxial connectors. In other embodiments, the cavity is divided into several resonant sub-cavities in order to raise the pass-band.
REFERENCES:
patent: 3573674 (1971-04-01), Wehner
patent: 3846721 (1974-11-01), Fritz et al.
patent: 4591812 (1986-05-01), Stegens et al.
Carenco Alain
Riviere Luc
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