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This paper proposed a UWB bandpass filter composed of asymmetric E-shaped electrodes. By tuning the length of the electrodes' fingers, the locations of the transmission zeros at the higher out-of-passband were synthesized separately and widely-suppressed out-of-passband response was realized. Compared with the symmetric model shown in Fig. 1 (a), the dimensions of the new model was 5.1 mm by 5.1 m...
This paper newly proposes a super-compact planar ultra-wideband (UWB) bandpass filter composed of capacitor-loaded E-shaped electrodes. This capacitor supplies additional capacitance to the tightly-coupled electrodes, leading to relax the fabrication difficulties. By introducing the capacitor to the gap, response of the UWB passband is drastically improved. In the experiment, with a 0.5 pF capacitor,...
We have reported a compact planar-type UWB bandpass filter with tightly coupled E-shaped electrodes by Y. Horii (2007). In this paper, a useful and practical design procedure for this filter is developed, and explained in details with full-wave simulations. In addition, the resulting model designed by the introduced procedure is demonstrated experimentally to confirm the theoretical predictions. Furthermore,...
This paper proposes a new planar-type ultra- wideband (UWB) bandpass filter (BPF), and the basic behaviour of the filter is studied theoretically and experimentally. The UWB BPF, having a widely spread passband from 3.7 GHz to 10.4 GHz (theory), mild group delay of about 0.2 ns (experiment), and two convenient attenuation poles around the passband, has been developed in a very compact size (10 mm...
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