System separating filter for separating first and second doubly polarized frequency bands

US3978434A · kind A · utility

Assignee

• Licentia Patent-Verwaltungs-GmbH · DE

Inventors

• Gunter Morz · Ludwigsburg, DE
• Stilianos Tokouzbalidis · Backnang, DE

Key dates

• Filing date: Sep 10, 1975
• Grant date: Aug 31, 1976
• Expiry date: Sep 10, 1995

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60H1/32011
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A system separating filter for separating first and second signals each consisting of a doubly polarized frequency band with the two bands being of different frequencies. The filter includes first, second and third series connected doubly polarizable waveguide sections with the first waveguide section having an inner cross section of such dimensions that both frequency bands can exist therein with their respective dual polarizations, and with the second waveguide section serving as a transition piece between the first waveguide section and the third waveguide section which has an inner cross section of such dimension that at least the second frequency band can exist. Means are provided for causing the first frequency band to form standing waves in the second waveguide section which is provided with two coupling arrangements, each associated with one of the two directions of polarization and each including a pair of coupling elements which are symmetrically disposed opposite one another in the walls of the second waveguide section, for coupling out the first frequency band and blocking the second frequency band, with the electrically effective reflection plane of each coupling arran…