Journal ArticleDOI
Synthesis of capacitive-coupled dual-behavior resonator (CCDBR) filters
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TLDR
In this article, two topologies and associated syntheses are described for capacitive-coupled dual-behavior resonator filters, where the inverter is replaced with an equivalent scheme composed of a set of three capacitors.Abstract:
The two topologies and associated syntheses described here are dedicated to the design of capacitive-coupled dual-behavior resonator filters. The technique is based on the coupling of adjacent dual-behavior resonators (DBRs). The aim is to control the spurious resonances associated to classical DBR filters. In the first coupling technique, the inverter is replaced with an equivalent scheme composed of a set of three capacitors, i.e., a positive capacitor associated with two negative ones in parallel on both sides. The second technique relies on the same principle, but two equivalent schemes are moved along each stub of the resonators; the capacitance is then calculated by considering the position of the coupling effect on the stub and the value of the inverter. In both cases the synthesis is totally defined. In order to validate this concept, capacitive-coupled DBR filters and classical filters were designed on alumina substrate so as to compare simulation and experimental dataread more
Citations
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References
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Journal ArticleDOI
Couplings of microstrip square open-loop resonators for cross-coupled planar microwave filters
TL;DR: In this article, a cross-coupled planar microwave filter using coupled microstrip square open-loop resonators is proposed, and a method for the rigorous calculation of the coupling coefficients of three basic coupling structures encountered in this type of filter is developed.
Journal ArticleDOI
Narrow bandpass filters using dual-behavior resonators
TL;DR: In this paper, the authors proposed a new concept of narrow bandpass filters leading to perfectly controlled electrical responses within both the required operating bandwidth and adjacent undesired bands, and a specific topology is considered for such a "global synthesis": in comparison with conventional filter performances, it provides significant improvements in terms of rejection control.
Journal ArticleDOI
Cross-coupled microstrip hairpin-resonator filters
TL;DR: In this paper, a new class of cross-coupled planar microwave filters using microstrip hairpin resonators is introduced, and the theoretical and experimental performance of these filters are investigated in the light of full-wave electromagnetic simulations.
Journal ArticleDOI
Microstrip Tapped-Line Filter Design
TL;DR: In this article, a step-by-step design procedure for microstrip tapped-line filters, accompanied by appropriate design curves, is presented. And a new hairpin-line filter using tapping is introduced.