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Novel Compact Narrow-band Microstrip Dual-mode Resonator Filters for G3 Communication Systems
Novel compact microwave bandpass filter configurations based on the dual-mode microstrip square loop resonators are
proposed. Two bandpass prototypes operating in the UMTS frequency range have been fabricated and measured: a 4-poles
and a 5-poles dual-mode filters with a bandwidth of 3%. These filters exhibit significant dimension reduction without
any appreciable decrease of performance thus making themselves very attractive for nano- and pico- cellular base stations
in 3G communication services.
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