Journal ArticleDOI
Extraction of Unloaded Q and Coupling Matrix From Measurements on Filters With Large Losses
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TLDR
In this paper, a simple solution is described for obtaining an accurate evaluation of the coupling matrix and the unloaded Q from the measured scattering parameters of a microwave lossy filter (assuming all the resonators with the same unloaded Q).Abstract:
In this letter, a simple solution is described for obtaining an accurate evaluation of the coupling matrix and the unloaded Q from the measured scattering parameters of a microwave lossy filter (assuming all the resonators with the same unloaded Q). The Cauchy method is applied in a predistorted frequency domain, where the measured (lossy) parameters refer to a lossless device. In this way, it becomes possible to synthesize a prototype low-pass network using well established techniques, once the topology of the filters has been assigned. With respect to the previous methods available in the literature, the one here proposed allows very accurate results even with filters exhibiting large insertion losses; moreover the computing time is extremely short allowing the use of the method in real time computer-aided tuning procedures for microwave filters. An example of application of the proposed method is reported in the letter for illustrative and validating purposes.read more
Citations
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Journal ArticleDOI
Model-Based Vector-Fitting Method for Circuit Model Extraction of Coupled-Resonator Diplexers
Ping Zhao,Ke-Li Wu +1 more
TL;DR: In this article, a model-based vector fitting (MVF) is proposed for accurate extraction of the characteristic functions of a coupled-resonator diplexer with a resonant type of junction from noise-contaminated measurement data.
Journal ArticleDOI
A Generalized Coupling Matrix Extraction Technique for Bandpass Filters With Uneven-Qs
TL;DR: In this article, a vector fitting-based analytical extraction method was proposed to accurately extract the coupling matrix and the uneven unloaded Qs of each electric resonators of a filter, which can be obtained by a sequence of complex orthogonal transformations.
Journal ArticleDOI
Synthesis and Beyond
TL;DR: In this paper, several optimization techniques applied in different steps of the synthesis of filters and multiplexers are discussed. But, the authors do not cover all technologies available, and the objective here is to provoke a broader thinking beyond basic filter synthesis.
Journal ArticleDOI
Miniaturized Folded Ridged Half-Mode and Quarter-Mode Substrate Integrated Waveguides for Filter Design
TL;DR: In this article, the performance of a miniaturized folded ridged half-mode substrate integrated waveguide (SIW) and its use in quarter-mode bandpass filter (BPF) design is investigated.
Journal ArticleDOI
Innovations in Terahertz Interconnects: High-Speed Data Transport Over Fully Electrical Terahertz Waveguide Links
TL;DR: This space covers a variety of different interconnect length scales and is most significantly experienced in terms of the interconnect technologies in large data centers (DCs) and high-performance computing (HPC) applications.
References
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Book
Microwave Filters for Communication Systems: Fundamentals, Design and Applications
TL;DR: Radio Frequency Filter Networks for Wireless Communications-The System Perspective and Computer-Aided Synthesis of Characteristic Polynomials shows the impact of system design on the requirements of filter networks.
Journal ArticleDOI
An Analytical Approach to Computer-Aided Diagnosis and Tuning of Lossy Microwave Coupled Resonator Filters
Meng Meng,Ke-Li Wu +1 more
TL;DR: In this article, an analytical approach to extracting the coupling matrix of a narrow band general Chebyshev bandpass filter with losses is presented. And the concept of phase loading is revealed in the community of computer aided tuning.
Journal ArticleDOI
Generation of accurate rational models of lossy systems using the Cauchy method
TL;DR: In this paper, a method to generate an accurate rational model of lossy systems from either measurements or an electromagnetic analysis is presented, which is valid either for lossless or lossy system responses.
Journal ArticleDOI
A formulation of the Cauchy method suitable for the synthesis of lossless circuit models of microwave filters from lossy measurements
Giuseppe Macchiarella,D. Traina +1 more
TL;DR: In this article, a novel formulation of the Cauchy method is presented, to be employed in the extraction of circuit models from measured(lossy) response of microwave filters.
Proceedings ArticleDOI
Computer-Aided Tuning of Microwave Filters
TL;DR: LCX synthesis and pattern search optimisation techniques are used to construct a very effective algorithm for computer aided tuning of microwave filters that proves to be successful in tuning a 6-pole filter having both elliptic attenuation peaks and group delay equalisation.
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An Analytical Approach to Computer-Aided Diagnosis and Tuning of Lossy Microwave Coupled Resonator Filters
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