Wave transmission lines and networks – Long line elements and components – Connectors and interconnections
Patent
1989-08-21
1990-10-30
Gensler, Paul
Wave transmission lines and networks
Long line elements and components
Connectors and interconnections
439583, H01P 104
Patent
active
049671731
ABSTRACT:
A precision transmission line in the form of a short airline, and calibration of a network analyzer using the short airline, are disclosed. The short airline is approximately one-quarter wavelength at the middle frequency of the measurement frequency range. One embodiment comprises a very short coaxial airline. The inner conductor is connected by an adapter to a mating inner conductor, such as the inner conductor of the network analyzer test port. For reliable interface at the other end of the inner conductor, a precision coaxial connector is preferably provided for connection to a device under test. The outer conductor is then attached coaxially to the inner conductor between the network analyzer test port and the device under test. The electrically short airline provides a very precise element for use in the TRL (Thru-Reflect-Line), as well as other, calibrations of network analyzers.
REFERENCES:
patent: 3340495 (1967-09-01), Weinschel
patent: 4648683 (1987-03-01), Botka
patent: 4687279 (1987-08-01), Holland et al.
patent: 4779067 (1988-10-01), Johanson
patent: 4824399 (1989-04-01), Bogar et al.
patent: 4845423 (1989-07-01), Pollard
Gensler Paul
Hewlett--Packard Company
Milks, III William C.
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