Wave transmission lines and networks – Wave mode converters
Patent
1987-09-01
1989-06-20
Gensler, Paul
Wave transmission lines and networks
Wave mode converters
333 26, 333260, 333261, 343763, H01P 106
Patent
active
048412619
ABSTRACT:
This invention is a rotatable transmission line junction with an external rotary mechanical energy coupling it finds application in microwave polarization rotators, rotary joints, resolvers, amplitude modulators, and other devices. The rotatable conductor of the transmission line coupling is mechanically connected to devices outside of the transmission line system without electrically coupling to the outside in this manner, rotary energy and/or positional information may be input to and/or received from the coupled line. The device consists of the junction of a first transmission line and a second transmission line in which said second transmission line is coupled electrically to said first line and mechanically supported by and/or connected to a plastic rod. Said plastic rod also passes to the outside of the transmission line system to form a mechanical rotational coupling means for the coupled line. Either line may be considered to be input or output. The preferred embodiment is for the junction of said two lines at 90.degree., although almost any angle may be accommodated. The preferred embodiment is in the form of the junction of two coaxial transmission lines. However, other transmission line forms may be joined with the device. For example, one could join two micro strip type lines or a micro strip line and a coaxial line. These transmission lines may be in turn be connected to other devices; such as waveguides, feed horns, or coaxial connectors; to make a polarization rotator, a rotary joint, resolver, amplitude modulator, or other device.
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