
Coaxial
Cavity Filters, where the coupling between capacitively loaded resonators is though an iris, allow complex high Q filters to be realised. Exact synthesis and cross coupling allow steep rejection and loss loss to be realised in a rugged and compact structure. Phase2 Microwave are very experienced in designing cavity filters and diplexers particularly for the cellular market. Low loss notch filters (bandstop) also use this technology.
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