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With the development of wireless communication technology, radiofrequency (RF) circuits and integrated circuits are becoming more complex and packing more functionality and signals into an ever closer space, with a high level of electromagnetic interaction between circuit nodes and interference/crosstalk from substrate coupling and free space [1]. Balanced/differential circuit technology has become...
As one of the most important components in RF/microwave systems, high-performance wideband bandpass filters with low insertion loss within the passband and large attenuation in the stopband are extremely desirable [1], [2]. Moreover, as shown in Figure 1(a), the definition of the fractional bandwidth for the narrowband bandpass filter is less than 1%; and the fractional bandwidths for wideband/ultrawideband...
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