Suspended microstrip circuit for the propagation of an odd-wave mode
AssigneeU.S. Philips Corporation
InventorFrans C. de Ronde
Life of this patent
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Abstract
A suspended microstrip circuit having a dielectric substrate arranged in parallel between two parallel metal planes. First and second strip conductors are provided on the substrate, the second strip conductor being in parallel with the first strip conductor and coupled thereto. A wave phenomenon can propagate through the conductor pair in an odd mode. The metal box accommodating the microwave circuit may now be much greater so that in most cases one box is sufficient. Microwave components such as Magic-T, series-T, shunt-T, circulators, filters, attenuators, can be implemented with the suspended microstrip line.
Claims9
A suspended microstrip circuit having two parallel electrically conducting planes, a dielectric substrate arranged in parallel therebetween and a first strip conductor provided on a first surface of the substrate, characterized in that:
- a second strip conductor is provided on the first surface of the substrate in parallel with and at a short distance from said first strip conductor and being coupled to said first strip conductor;
- a balanced supply source is connected between said two strip conductors for generating a wave phenomenon in the odd mode exclusively;
- a symmetrical load is connected between said two strip conductors for terminating said suspended microstrip circuit.
Dependencies are inferred from the claim text.