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. Lowloss notch filters (bandstop) also use this technology.

Frequency 500MHz to 15GHz

Bandwidth 1% to 10%

Stopband up to 4.5 times CF

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