Dual-Frequency Feed Source Using Nested Waveguides

The patent implements a nested waveguide structure where the second waveguide is positioned inside the first waveguide, with both waveguides sharing a common secondary reflector. This nested configuration allows dual-frequency operation within a single compact feed source assembly, enabling the antenna to operate across multiple frequency bands while maintaining a relatively simple overall structure and avoiding the need for completely separate feed systems for each frequency.

The patent creates a universal feed source structure that handles multiple frequency bands through a single integrated system. The first and second waveguides, along with the shared secondary reflector, form a multi-functional assembly that can process both first-frequency and second-frequency signals simultaneously, making the antenna adaptable to various communication applications across different frequency ranges.

The patent merges the functional elements for dual-frequency operation into a single integrated feed source structure. Instead of using separate independent feed systems for each frequency band, the invention combines the first waveguide, second waveguide, and secondary reflector into one unified assembly where components work together to handle both frequencies, thereby reducing overall system complexity compared to fully separate systems.

The nested arrangement of the second waveguide within the first waveguide, both sharing a common secondary reflector, allows the dual-frequency system to occupy a compact volume with minimized structural complexity. This nesting approach enables multi-functionality without proportionally increasing the physical footprint or structural complexity of the feed source.