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This paper addresses the application of bi-path stub-loaded in-parallel-transmission-line-type transversal filtering sections (TFSs) to the design of signal-interference microwave planar multi-band bandpass filters (BPFs). It is demonstrated that by inserting a ground-ended loading stub in one of the signal-propagation paths of their building TFSs, several performance benefits in multi-band planar...
In this paper, a new concept of single/multi-band microwave planar two-way circuit featuring a dual RF power-dividing/ filtering functionality is presented. This circuit, based on signal-interference techniques, is applied to develop multi-stage power-distribution networks with intrinsic filtering capability. Design equations and rules for the proposed dual-function circuit, helping in the synthesis...
In this letter, signal-interference filtering sections shaped by two in-parallel stepped-impedance transmission lines are applied to frequency-asymmetrical microstrip filter design. When realizing single-passband filters, a different selectivity for the lower and upper stopband can be generated, making them appropriate for duplexing devices. In the case of double-passband filters, fully-asymmetrical...
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