Multi-Band Filter Coupling Layout for Low-Loss Compact Circuits

The filter is divided into multiple resonators (first resonator, second resonator, etc.) that are spatially separated and independently positioned on the substrate. Each resonator handles specific frequency components, allowing the overall filter to achieve millimeter wave filtering with reduced signal loss and compact area by distributing the filtering function across multiple segmented elements rather than using a single large traditional filter structure

The filter structure transitions from planar two-dimensional layout to three-dimensional spatial arrangement by positioning resonators at different locations and orientations on the substrate, with feed lines connecting them in a multi-dimensional configuration. This dimensional transformation enables compact integration while maintaining effective millimeter wave signal paths, reducing both area and loss

The filter structure is designed to handle multiple frequency bands simultaneously through its array of resonators configured for different resonant frequencies. This multi-functional design enables a single compact filter to provide broadband millimeter wave filtering coverage, maintaining reliable filtering performance across multiple bands while occupying minimal circuit area

The resonators are arranged in a nested or closely integrated configuration on the substrate, with smaller resonant elements positioned within or adjacent to larger ones. This nesting approach allows multiple filtering functions to be packed into a compact space, achieving reliable multi-band performance in a small footprint