期刊
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES
卷 -, 期 -, 页码 -出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1759078723001186
关键词
bandpass filter (BPF); broadside coupled; equivalent lumped element circuit; low pass filter (LPF); microstrip/CPW; multiple mode resonator (MMR); notched band; short-circuited coplanar waveguide (SCCPW); transmission zeros (TZs); ultra-wideband (UWB)
The design and development of a microstrip-based planar ultra-wideband bandpass filter with single/multiple interference rejection capability is presented. The proposed structure is compact and covers the necessary UWB spectrum with appreciable characteristics.
The design and development of a microstrip-based planar ultra-wideband (UWB) bandpass filter (BPF) with single/multiple interference rejection capability is presented. The proposed BPF structure is developed based on the broadside coupled mechanism of microstrip/coplanar waveguide (CPW). The BPF has microstrips and short-circuited CPW capacitively coupled through the substrate. The basic frequency response generated from this geometry covers the necessary UWB spectrum (3.1-10.6 GHz) and possesses appreciable characteristics due to dual transmission zeros at either passband boundary. Multiple resonators are embedded in the basic BPF structure to develop passband notches to circumvent unnecessary interferences. A low-pass filter is later integrated into geometry to extend the upper stopband. The proposed structure is compact and covers an area of only 14 x 11.4 mm2.
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