Patent ID: 6816026
Filing Date: 2004-11-09
Classification: H01P

Abstract:
A selectable waveguide having a first position and a second position for respectively communicating first or second signals from an antenna feed to respective-first and second probes, the selectable waveguide comprising,an antenna feed port coupled to the antenna feed for communicating the respective signals between the antenna feed and the first and second probes, a first waveguide section having a first shape and a first cross-section for coupling to the antenna feed port for communicating the first signal, the first shape is straight, a first port for coupling the first probe to the first waveguide section for communicating the first signal between the first probe and, the first waveguide section, a second waveguide section having a second shape and a second cross-section for coupling to the antenna feed port for communicating the second signal, the second shape is bent at ninety degrees with a forty-five degree reflective surface, a second port for coupling the second probe to the second waveguide section for communicating the second signal between the second probe and the second waveguide section, the first and second cross sections are selected from the group consisting of square and circular, the first and second shapes and the first and second cross sections enable concurrent isolated communications of the first and second signals through either one of the first and second waveguide sections when the first and second signals are orthogonally polarized with respect to each other, and an element for supporting the first and second waveguide sections, the element having a first position for communicating the first signal between the antenna feed port through the first waveguide section to the first port, the element having a second position for communicating the second signal between the antenna feed port through the second waveguide section to the second port, wherein:, the second signal comprises a high frequency signal and a low frequency signal; the reflective surface is a frequency selective reflective surface for reflecting the low frequency signal to the second port and for passing the high frequency signal to the first port; and the second waveguide section comprises a waveguide extension extending from the frequency selective reflective surface and the first port for communicating the high frequency signal to the first probe through the first port when the selectable waveguide is in the second position.