UWB Bandpass Filter Includes Notched Band (.PDF Download)

Sept. 15, 2016

Development of ultrawideband (UWB) communications systems requires the design of many different component functions, including bandpass filters (BPFs) with acceptable selectivity. To serve UWB communications applications, a compact UWB BPF with reasonable selectivity and an integral notched band was fabricated with two interdigital, coupled, three-line structures. Selectivity was improved by adding another signal path loaded by two short-circuit stubs. The filter exhibits sharp rolloff to its rejection bands with a wide fractional bandwidth of 116%, with 25-dB rejection in the notched band...

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