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A novel compact quasi-millimeter-wave UWB bandpass filter (BPF) with a midband frequency of 26 GHz and a fractional bandwidth of 20% is developed for automotive radar systems. Based on the even- and odd-mode method, analytical closed-form formulas are derived first for accurate design of two microstrip stubs-loaded multi-mode ring resonators with pre-designated bandwidths and multiple transmission...
In this paper, we propose a novel transversal array bandpass filter composed of multi-mode ring resonators, and design a bandpass filter with very high skirt selectivity. Based on a conventional filter theory, a bandpass filter is constructed by cascade connection of resonators, while in our proposed filter, two ring resonators are arranged in parallel connection with respect to the input/output lines...
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